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EP1948806A2 - Utilisation de polynucleotides a repetition armadillo (arm1) pour obtenir une resistance elevees aux agents pathogenes chez des vegetaux - Google Patents

Utilisation de polynucleotides a repetition armadillo (arm1) pour obtenir une resistance elevees aux agents pathogenes chez des vegetaux

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Publication number
EP1948806A2
EP1948806A2 EP06819167A EP06819167A EP1948806A2 EP 1948806 A2 EP1948806 A2 EP 1948806A2 EP 06819167 A EP06819167 A EP 06819167A EP 06819167 A EP06819167 A EP 06819167A EP 1948806 A2 EP1948806 A2 EP 1948806A2
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EP
European Patent Office
Prior art keywords
nucleic acid
acid molecule
polypeptide
plant
seq
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP06819167A
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German (de)
English (en)
Inventor
Dimitar Douchkov
Patrick Schweizer
Uwe Zierold
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BASF Plant Science GmbH
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BASF Plant Science GmbH
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Application filed by BASF Plant Science GmbH filed Critical BASF Plant Science GmbH
Priority to EP06819167A priority Critical patent/EP1948806A2/fr
Publication of EP1948806A2 publication Critical patent/EP1948806A2/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
    • C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
    • C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
    • C12N15/8261—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield
    • C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
    • C12N15/8279—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
    • C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
    • C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
    • C12N15/8261—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield
    • C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
    • C12N15/8279—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance
    • C12N15/8282—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance for fungal resistance

Definitions

  • ARM1 Armadillo repeat
  • the invention relates to a method for producing or increasing a pathogen resistance in plants by reducing the expression of at least one Armadillo Repeat polypeptide or a functional equivalent thereof.
  • the invention relates to novel nucleic acid sequences coding for a Hordeum vulgar Armadillo Repeat (HvARM) polynucleotide and describes homologous sequences (ARM1) thereof and their use in methods for achieving a pathogen resistance in plants, as well as nucleic acid constructs, expression cassettes and vectors comprising these sequences, and which are capable of mediating a fungus resistance in plants.
  • the invention further relates to these expression cassettes or vectors transformed transgenic organisms, in particular plants, derived cultures, parts or transgenic propagation material.
  • fungi invade the host tissue via the stomata (e.g., rust fungi, Septoria, Fusarium species) and penetrate the mesophyll tissue, while others penetrate via the cuticle the underlying epidermal cells (e.g., Blumeria species).
  • stomata e.g., rust fungi, Septoria, Fusarium species
  • mesophyll tissue e.g., rust fungi, Septoria, Fusarium species
  • others penetrate via the cuticle the underlying epidermal cells (e.g., Blumeria species).
  • the invention relates to a method for increasing the resistance to one or more penetrating pathogen (s) in a monocot or dicotyledonous plant, or a part of a plant, e.g. in an organ, tissue, cell or part of a plant cell, e.g. in an organelle, characterized in that activity or amount of an Armadillo Repeat ARM1 protein in the plant, or part of the plant, e.g. in an organ, tissue, cell or part of a cell, e.g. in a cell compartment, e.g. in an organelle, compared to a control plant or part of a control plant, e.g. their organ, tissue, cell or part of a cell, e.g. is reduced or reduced in a cell compartment, for example in an organelle.
  • race-specific resistance is achieved in the method according to the invention.
  • a broad spectrum resistance against obligate biotrophic and / or hemibiotrohpe and / or necrotrophic fungi of plants, in particular against mesophyll, epidermis or into the mesophyll-penetrating pathogens can be achieved.
  • Armadillo Repeat motif was originally discovered in the segment polarity gene Armadil-Io from Drosophila melanogaster. It codes for a beta-catenin, which plays an important role in cell-cell adhesion as well as for cell differentiation.
  • Armadillo (Arm) Repeat proteins contain tandem copies of a degenerate sequence of approximately 42 amino acids, which encodes a three-dimensional structure for mediating protein-protein interactions (Azevedo et al. (2001) Trends Plant Sci. 6, 354- 358). Most of these proteins are involved in intracellular signal transduction or in the regulation of gene expression in cellular development processes.
  • Armadillo repeat proteins In contrast to animals, only two plant-derived Armadillo repeat proteins have been functionally characterized: one gene is PHOR1 (photoperiod-responsive 1) from potato, for which a role in gibberellic acid signal transduction could be demonstrated (Amador V, Cell 10; 106 (3): 343-54.)
  • the second armadillo repeat protein is ARC1 (Armadillo Repeat Containing Protein 1) from rapeseed, which interacts with the receptor kinase SRK1 (Gu et al. 1998) Proc. Natl. Acad., USA 95, 382-387).
  • ARC1 Armadillo Repeat Containing Protein 1
  • ARC1 belongs to the U-box subclass of Armadillo repeat proteins, which includes 18 genes in Arabidopsis (Azevedo et al. (2001) Trends Plant Sci., 6, 354-358).
  • the U-box is a motif consisting of about 70 amino acid residues.
  • HECT and RING finger proteins they presumably form a third class of ubiquitin E3 ligases whose primary function is to establish the substrate specificity of the ubiquitination machinery (Hatakeyama et al., (2001) J. Biol. Chem. 76, 331 11-33120).
  • the genes or the nucleic acids used or the expressed proteins whose experession is diminished have an identity of 40% or more, preferably 50%, 60%, 70%, 80%, 85%, 90%, 95%, 97%, 98%, 99% or more compared to the respective sequence of HvARM (SEQ ID NO: 1 and SEQ ID NO: 2, respectively).
  • HvArm The highest homology genes to HvArm from rice (Acc #: XM_479734.1, XM_463544, AP003561, or XM_506432), Tobacco (AY219234) and Arabidopsis (Acc # NM_127878, AC004401, BT020206, AB007645, NM_115336, AK118613 , AL138650, AL133314, AC010870, AY125543, AY087360, AB016888, AK175585, AL049655, AY096530 and AK1 18730) thus presumably perform functions similar to HvARM in the plant. In the following, therefore, these are under the term "Aimadillo repeat ARM1" or "ARM1" protein summarized. In contrast, HvARM and HvARMI refer to such a protein from barley.
  • the invention consequently relates to a process for the production of a plant with increased resistance to one or more plant pathogens, preferably with a broad-spectrum resistance, in particular against piocathogens, for example the classes Ascomycetes, Basidiomycetes, Chytridiomyces or Oomycetes, preferably from powdery mildews of the family Erysiphaceae, and most preferably the genus Blumeria, by reducing the expression of a protein characterized by containing at least one armadillo repeat.
  • the protein contains two, more preferably more than two armadillo repeats.
  • the activity of an armadillo repeat polypeptide is reduced, e.g. blocked or off, which essentially does not include a U-box, i. either does not include a U-box or does not include a functional U-box.
  • the activity of a polypeptide is reduced, for example switched off, which is encoded by a polynucleotide comprising at least one nucleic acid molecule selected from the group consisting of: (a) a nucleic acid molecule which encodes at least one polypeptide comprising the amino acid sequence shown in SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 60, 61 or 62 sequence shown;
  • nucleic acid molecule encoding a polypeptide recognized by a monoclonal antibody directed against a polypeptide encoded by the nucleic acid molecules of (a) to (c);
  • nucleic acid molecule which consists of a DNA library using a nucleic acid molecule according to (a) to (c) or its partial fragments of at least 15 nt, preferably 20 nt, 30 nt, 50 nt, 100 nt, 200 nt or 500 nt can be isolated as a probe under stringent hybridization conditions;
  • the resistance to mesophyll and / or epidermal cell-penetrating pathogens is preferably increased.
  • resistance is achieved by expressing the expression of a polypeptide, preferably a polypeptide, encoded by the above-described nucleic acid molecule, for example, an ARM1 from rice (Acc #: XM_479734.1, XM_463544, AP003561, or XM_506432 ), Tobacco (AY219234) and Arabidopsis (Acc.-No.
  • a polypeptide preferably a polypeptide, encoded by the above-described nucleic acid molecule
  • an ARM1 from rice Acc #: XM_479734.1, XM_463544, AP003561, or XM_506432
  • Tobacco AY219234
  • Arabidopsis Acc.-No.
  • the endogenous activity of one of these polypeptides can also be reduced, reduced or blocked by methods known to those skilled in the art, for example by mutation of a genomic coding region for the active site, for binding sites, for localization signals, for domains, clusters, etc., such as codie Coordinating Regions for HEAT, FBOX, LRR, IBIB, C2, WD40, Beach, U-Box, or AND domains.
  • the activity can be reduced according to the invention by mutations which influence the secondary, tertiary, or quaternary structure of the protein.
  • Mutations can e.g. be introduced by EMS mutagenesis. Domains can be identified by suitable computer programs, such as e.g. SMART, or InterPRO, e.g. as in Andersen P., The Journal of Biol. Chemistry, 279, 38, pp. 40053-40061, 2004 or Y. Mudgil, Plant Physiology, 134, 59-66, 2004, and references therein.
  • the suitable mutants can then be e.g. by TiLing (Henikoff et al., Plant Physiol. 2004 Jun; 135 (2): 630-6).
  • the reduction in the polypeptide level, activity or function of an Armadillo Repeat ARM1 protein in a plant is combined with an increase in the polypeptide level, activity or function of other resistance factors, preferably a Bax inhibitor 1 protein (BI-1), preferably the Bax Hordeum vulgare inhibitor 1 (GenBank Acc. No .: AJ290421), from Nicotiana tabacum (GenBank Acc. No .: AF390556), rice (GenBank Acc. No .: AB025926), Arabidopsis (GenBank Acc.- No .: AB025927) or tobacco and oilseed rape (GenBank Acc. No .: AF390555, Bolduc N et al.
  • BI-1 Bax inhibitor 1 protein
  • An increase can e.g. et al by mutagenesis or overexpression of a transgene.
  • a reduction in the protein amount or activity of the proteins RacB eg from barley (GenBank Acc. No .: AJ344223)
  • CSL1 eg from Arabidopsis (GenBank Acc. No .: NM116593)
  • HvNaOX eg from barley (GenBank Acc. No .: AJ251717)
  • MLO eg from barley (GenBank Acc. No. Z83834).
  • the activity or function of MLO, BI-1 and / or NaOX can be carried out analogously as for MLO in WO 98/04586; WO 00/01722; WO 99/47552 and the other writings mentioned below are reduced or inhibited, the content of which is hereby expressly and expressis verbis with recorded, in particular to describe the activity and inhibition of MLO.
  • the description of the cited documents describes methods, methods and particularly preferred embodiments for reducing or inhibiting the activity or function of MLO; the examples concretely indicate how this can be carried out.
  • the reduction of the activity or function and, if appropriate, the expression of BI-1 is described in detail in WO 2003020939, which is hereby expressly and expressly taken as included in the present description.
  • the specification of the cited document describes methods and methods for reducing or inhibiting the activity or function of BI-1, the examples specifically indicating how this can be carried out.
  • the reduction or inhibition of the activity or function of BI-1 is particularly preferably carried out according to the embodiments and the examples particularly preferred in WO 2003020939 and in the organisms shown there as particularly preferred, in particular in a plant, eg constitutively, or in one part thereof, eg in a tissue, but especially at least in the epidermis or a substantial part of the epidermal cells.
  • the reduction of the activity or function and optionally the expression of BI-1 is described in detail in WO 2003020939.
  • the person skilled in the art will find in WO 2003020939 the sequences which code for BI-1 proteins and can also identify BI-1 with the method provided in WO 2003020939.
  • the activity in the plant is lower than in a control plant or in a part of a plant is lower than in a corresponding part of a control plant, eg in an organ, an organelle, a tissue, or a cell
  • the activity of said polypeptide is 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% %, 97%, 99%, or even less than in the control.
  • essentially no or particularly preferably no expression of said polypeptide takes place at all.
  • these terms also encompass complete inhibition or blocking of an activity, eg, by knocking out a gene.
  • Reduction encompasses the partial or substantially complete suppression or blocking of the functionality of a protein based on different cell biological mechanisms.
  • a reduction in the meaning of the invention also includes a reduction in the amount of a protein to a substantially complete (i.e., lack of detectability of activity or lack of immunological detectability of the protein) or complete absence of the protein.
  • the expression of a particular protein or the activity or function in a cell or an organism is preferably reduced by more than 50%, particularly preferably by more than 80%, and in particular by more than 90%.
  • expression of a nucleic acid molecule encoding an ARM1 protein e.g. in combination with a tissue-specific increase in the activity of a Bax inhibitor-1 protein, in the mesophyll tissue.
  • Reduction of the Armadillo-Repeat ARM1 protein level in a transgenic plant, e.g. BI-1 overexpressed in mesophyll tissue offers the opportunity to generate complete and complete fungal resistance in the plant.
  • the amount of polypeptide, activity or function of the Bax inhibitor 1 protein is increased from Hordeum vulgare (Gevtäank Acc. No .: AJ290421), from Nlcotlana tabacum ⁇ GenBank Acc. No .: AF390556), rice (GenBank Acc.-No .: AB025926), Arabidopsis (GenBank Acc.-No .: AB025927) or tobacco and oilseed rape (GenBank Acc. No .: AF390555, Bolduc N et al. (2003) Planta 216: 377-386) or of ROR2 (eg from barley (GenBank Acc.
  • SnAP34 eg from barley (GenBank Acc. No .: AY247208) and / or the lumenal binding protein BiP eg from rice (GenBank Acc. No AF006825) combined with the reduction in the protein amount or activity or function of the proteins RacB (eg from barley (GenBank Acc. No .: AJ344223), CSL1 (eg from Arabidopsis (GenBank Acc.
  • At least one of the above mentioned is used for the purposes of ex activating or overexpressing appropriate genes and / or diminishing at least one of the abovementioned genes for reduction.
  • An increase in expression can be achieved as described herein.
  • both activation and ascending understood expression or function of the endogenous protein including a de novo expression as well as an increase or increase by the expression of a transgenic protein or factor.
  • Organism in the context of the invention means “non-human organisms” as long as the term refers to a viable multicellular organism.
  • Plants in the context of the invention means all dicotyledonous or monocyledonous plants Preferred plants are those which can be subsumed under the class of the Liliatae (monocotyledoneae or monocotyledonous plants) The term includes the mature plants, seeds, shoots and seedlings, as well as derived parts, reproductive material, plant organs, tissues, protoplasts, callus and other cultures, for example cell cultures, as well as all other types of groupings of plant cells into functional or structural units.Red plants means plants at any stage of development beyond the seedling young, immature plant at an early stage of development.
  • Plant also includes annual and perennial dicotyledonous or monocotyledonous plants and includes, by way of example but not limitation, those of the genera, Bromus, Asparagus, Pennisetum, Lolium, Oryza, Zea, Avena, Hordeum, Seeale, Tritiumum, Sorghum and Saccharum one.
  • the method is applied to monocotyledonous plants, for example from the family Poaceae, more preferably to the genera Oryza, Zea, Avena, Hordeum, Seeale, Triticum, Sorghum, and saccharum, most preferably to plants of agricultural importance, such as eg Hordeum vulgare (barley), Triticum aestivum (wheat), Triticum aestivum subsp.spelta (spelled), triticale, Avena sative (oats), Seeale cereale (rye), sorghum bicolor (millet), Zea mays (maize), Saccharum officinarum ( Sugarcane) or Oryza sative (rice).
  • the family Poaceae more preferably to the genera Oryza, Zea, Avena, Hordeum, Seeale, Triticum, Sorghum, and saccharum, most preferably to plants of agricultural importance, such as eg Hordeum vulgare (barley), Triticum
  • Epidermis tissue or epidermis means the outer layers of tissues of the plants, it can be one-layered to multi-layered, there is epidermis-enriched gene expression, such as: Cer3, which can serve as a marker; Hannoufa.A. (1996) Plant J. 10 (3), 459-467.
  • the term "epidermis” is understood to mean the predominant terminating tissue of primary aboveground plant parts, such as the shoot, the leaves, flowers, fruits and seeds, to the outside the epidermis cells shed a water-repellent layer, the cuticle
  • the roots are surrounded by the rhizodermis which is similar in many respects to the epidermis, but also has marked differences from it Derivation of the rhizodermis, however, is less clear. Depending on the species, it can be attributed to development history either the root cap or the primary bark.
  • the epidermis can be attributed numerous functions: It provides the plant protection against dehydration and regulates the transpiration rate It protects the plant from various chemical and physical external influences as well as animal and infestation by parasites.
  • the epidermis contains a number of differently differentiated cells. There are also species-specific variants and different organization of the epidermes in the individual parts of a plant. Essentially, it consists of three categories of cells: the "true" epidermal cells, the cells of the stomata (stomata) and the trichomes (Greek: trichoma, hair), epidermal appendages of various shapes, structures and functions.
  • epidermal cells make up the bulk of the cells of the terminal tissue. They are either polygonal (of plate or tabular shape) or stretched in plan. The trained between them walls are often wavy or booked. What induces this form during development is unknown; the present hypotheses explain the situation only unsatisfactorily. Elongated epidermal cells are found on organs or organ parts which are self-stretched, e.g. on stems, petioles and leaf ribs as well as on the leaves of most monocotyledons.
  • leaf blades can be covered by differently structured epiderms, whereby both the shape of the cells, the thickness of the walls and the distribution and number of specialized cells (stomata and / or trichomes) per unit area can vary.
  • epiderms Most of the epidermis is single-layered, but in species from several families (Moraceae: here most Ficus species, Piperaceae: Peperonia [Pepe- ronie], Begoniaceae, Malvaceae, etc.) multi-layered water-storing epi- derms have been detected.
  • Epidermis cells but on the outside of a cutin layer (cuticle), which covers all epidermal surfaces as a continuous film. It can be either smooth or structured by protrusions, ridges, folds and furrows. However, a folding of the cuticle that is visible by viewing the surface is not always based on the formation of cuticular strips. There are certainly cases where a kutikulafaltung is only the expression of the underlying protuberances of the cell wall. Epidermal appendages of various shapes, structures and functions are referred to as trichomes and are also understood here by the term "epidermis". They occur as protective, supporting and glandular hairs
  • epidermis also includes papillae, papillae are protuberances of the epidermis surface, the papillae on flower surfaces of the pansy (viola tricolor) and the leaf surfaces of many species in tropical rainforest give the surface a velvety consistency.
  • Some cells of epidermis can be designed as water reservoirs.A typical example are the bladder cells on surfaces of many midday flower species and other succulents. In some plants, such as the campanula (Campanula persicifolia), the outer walls of the epidermis are thickened lens-shaped
  • parenchymatous tissues The bulk of all tissues forms the ground tissue or parenchyma.
  • the parenchymatous tissues is the mesophyll, which may be differentiated in leaves in the palisade parenchyma and sponge parenchyma.
  • mesophyll the mesophyll
  • Parenchymatous cells are all living, mostly isodiametric, rarely elongated.
  • the pith of the shoots, the storage tissues of the fruits, seeds, the root and other subterranean organs are to be regarded as parenchyma as well as the mesophyll.
  • “Medullary tissue” means the leaf tissue lying between the epidermis layers, consisting of the palisade tissue, the sponge tissue and the leaf veins.
  • the mesophyll is subdivided into palisade and sponge parenchyma in the leaves of most ferns and phanerogams, especially in the dicotyledons and many monocotyledons.
  • a "typical" leaf is dorsiventral built.
  • the palisade parenchyma is usually located on the upper side of the leaf just below the epidermis.
  • the sponge parenchyma fills the underlying space. It is interspersed with a voluminous intercellular system whose gas space is in direct contact with the outside world via the stomata.
  • the palisade parenchyma consists of elongated, cylindrical cells. In some species, the cells are irregular, sometimes they are forked (Y-shaped: armpalisadenparenchym). Such variants occur in ferns, conifers and a few angiosperms (for example in some ranunculaceae and caprifoliaceen species [example: elderberry]). In addition to the most widely used form of organization just described, the following variants have been demonstrated: Palisade parenchyma on the underside of the leaf. Especially noticeable in scale leaves. Example: Tree of Life (Thuja), as well as the leaves of wild garlic (Allium ursinum)
  • the variability of the sponge parenchyma cells and the formation of the sponge parenchyma itself are even more diverse than those of the palisade parenchyma. It is usually referred to as Autolskyungsgewebe, because it contains a variety of interconnected intercellular spaces.
  • the mesophyll may comprise the so-called assimilation tissue, but the terms mesophyll and assimilation tissue are not to be used as synonyms.
  • Further aids for the characterization of epidermis and medley are found by the person skilled in the art, e.g. in v. GUTTENBERG, H .: Textbook of General Botany. Berlin: Akademie-Verlag 1955 (5th ed.), HABERLANDT, G .: Physiological plant anatomy.
  • epidermis or epidermis cells can be characterized histologically or biochemically, including molecular biology.
  • the epidermis is biochemically characterized.
  • the epidermis may in one embodiment be characterized by the activity of one or more of the following promoters:
  • WIR5 GstA1
  • acc. X56012 Dudler & Swiss, unopened GLP4, acc. AJ310534; Wei.Y .; (1998) Plant Molecular Biology 36, 101-112.
  • GLP2a acc. AJ237942, Schweizer.P., (1999). Plant J 20, 541-552.
  • the epidermis is characterized in that only a part of the promoters is active, for example 2, 3, 5 or 7 or more, but at least one of the above enumerated is active. In one embodiment, the epidermis is characterized in that all said promoters are active in the tissue or cell. Consequently, mesophyll or mesophyll cells can be biochemically characterized, including molecular biology or histology. In one embodiment, the mesophyll is biochemically characterized. In one embodiment, the mesophyll can be characterized by the activity of one or more of the following promoters:
  • TaFBPase acc. X53957 ;.
  • the mesophyll is characterized in that only a part of the promoters is active, e.g. 2, 3, 5 or 7 or more, but at least one of those enumerated above. In one embodiment, the mesophyll is characterized in that all of the promoters mentioned are active in the tissue or cell.
  • all the promoters mentioned are active in the epidermis of a plant used or produced according to the invention or a plant according to the invention in the epidermis and mesophyll. In one embodiment, only a portion of the promoters mentioned are active, e.g. 2, 5, 7 or more, but at least one of the promoters enumerated above is active in each case.
  • Nucleic acids means biopolymers of nucleotides which are linked together via phosphodiester bonds (polynucleotides, polynucleic acids) Depending on the type of sugar in the nucleotides (ribose or deoxyribose), a distinction is made between the two classes of ribonucleic acids (RNA) and deoxyribonucleic acids ( DNA).
  • RNA ribonucleic acids
  • DNA deoxyribonucleic acids
  • slaughter means all parts of plants obtained by agricultural cultivation of plants and collected during the harvesting process.
  • “Resistance” means preventing, repressing, reducing or attenuating disease symptoms of a plant as a result of being infested by a pathogen.
  • the symptoms can be of a variety of types, but preferably include those which directly or indirectly lead to impairment of the quality of the plant, the quantity of the crop, the suitability for use as feed or food or even sowing, cultivation, harvesting or processing of the Harvest difficult.
  • the following disease symptoms are attenuated, reduced or prevented: formation of pustules and spore beds on the surfaces of the affected tissues, maceration of the tissues, spreading necrosis of the tissue, accumulation of mycotoxins, e.g. from Fusarium graminearum or F. culmorum, penetration of the epidermis and / or mesophyll, etc.
  • control plant By “conferring,” “passing,” “generating,” or “increasing,” pathogen resistance, or the like, it is meant that the defense mechanisms of a particular plant or part of a plant, e.g. in an organ, tissue, cell or organelle by application of the method of the invention in comparison with a suitable control, e.g. the wild type of the plant ("control plant", “starting crop"), to which the method according to the invention was not applied, under otherwise identical conditions (such as climatic or growing conditions, pathogen type, etc.) an increased resistance to one or more Has pathogens.
  • control plant the wild type of the plant
  • At least the epidermis and / or mesophylic tissue or organs possessing an epidermal and / or mesophylic tissue have increased resistance to the pathogen (s).
  • the resistance in the leaves is increased.
  • resistance is increased in the lemma, palea, and / or glume.
  • the activity of the protein Armadillo-repeat ARM1 according to the invention is reduced.
  • the increased resistance expresses preference in a reduced expression of the disease symptoms, wherein disease symptoms - in addition to the above-mentioned impairments - also includes, for example, the penetration efficiency of a pathogen into the plant or plant cell or the proliferation in or on the same.
  • Changes in the cell wall structure may constitute a fundamental mechanism of pathogen resistance, e.g. shown in Jacobs AK et al. (2003) Plant Cell, 15 (11): 2503-13.
  • the disease symptoms are preferably at least 10% or at least 20%, particularly preferably at least 40% or 60%, very particularly preferably reduced by at least 70% or 80%, most preferably by at least 90% or 95% or more.
  • Pathogen in the context of the invention means organisms whose interactions with a plant lead to the symptoms of the ailment described above, in particular pathogens refers to organisms from the kingdom of fungi. Pathogens are preferably understood to mean an epidermis or mesophyll cell-penetrating pathogen, particularly preferably pathogens which penetrate via stomata in plants and subsequently penetrate mesophyll cells. Organisms of the strains Ascomycota and Basidomycota are preferred. Particularly preferred are the families Blumeriaceae, Pucciniaceae, Mycosphaerellaceae and Hypocreaceae.
  • HvARM its activity or function also causes resistance to other pathogens.
  • Ascomycota such as e.g. Fusarium oxysporum (Fusarium wilt on tomato), Septoria nodorum and Septoria tritici (spelled tuber on wheat), Basidiomycetes such as Puccinia graminis (black rust on wheat, barley, rye, oats), Puccinia recondita (brown rust on wheat), Puccinia dispersa (Brown rust on rye), Puccinia hordei (brown rust on barley), Puccinia coronata (crown rust on oats),
  • Ascomycota such as e.g. Fusarium oxysporum (Fusarium wilt on tomato), Septoria nodorum and Septoria tritici (spelled tuber on wheat), Basidiomycetes such as Puccinia graminis (black rust on
  • the method according to the invention contributes to resistance
  • Puccinia graminis f.sp. hordei barley stem rust
  • Puccinia graminis f.sp. tritici Fusarium graminearum, Fusarium avenaceum, Fusarium culmorum, Puccinia graminis f.sp. tritici, Puccinia recondita f.sp. tritici, Puccinia striiformis, Septoria nodorum, Septoria tritici, Septoria avenae, Blumeria graminis f.sp. tritici (powdery mildew, Bgt) or Puccinia graminis f.sp. tritici (Wheat stem rust),
  • Puccinia purpurea Fusarium monilifonne, Fusarium graminearum or Fusarium oxysporum.
  • Armadillo Repeat Arm1 Polypeptide or "Armadillo Repeat ARM1 Protein” or “Arm” or “Arm1” and their modifications means in the context of the invention a protein with one or more Armadillo repeats.
  • an Armadillo Repeat ARM1 protein is understood as meaning a protein with a homology to one of the amino acids shown in SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 or amino acid sequence shown in the figures, eg an armadillo repeat ARM1 polypeptide from barley (HvARM) according to SEQ ID NO: 2 and / or Rice (Oryza sative) according to SEQ ID NO: 4, 6, 8, and / or 10, and / or from tobacco (Nicotiana tabacum) according to SEQ ID NO .: 12 and / or from A.
  • HvARM barley
  • Rice Oryza sative
  • the invention relates to functional equivalents of the aforementioned polypeptide sequences.
  • polypeptide amount means the number of molecules or moles of Armadillo Repeat ARM1 polypeptide molecules in an organism, tissue, cell or cell compartment.
  • “Reduction” of the polypeptide amount means the molar reduction in the number of Armadillo-Repeat ARM1 polypeptides, in particular those in SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 , 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62, in an organism, tissue, cell or cell compartment, for example by one of the methods described below, as compared to a suitable control, eg the wild type (control plant) of the same genus and species to which this method was not applied, under otherwise identical conditions (such as, for example, culture conditions, age of the plants, etc.).
  • a suitable control eg the wild type (control plant) of the same genus and species to which this method was not applied, under otherwise identical conditions (such as, for example, culture conditions, age of the plants, etc.).
  • the reduction is at least 5%, preferably at least 10% or at least 20%, particularly preferably at least 40% or 60%, very particularly preferably at least 70% or 80%, most preferably at least 90%, 95% or 99%, and especially 100%.
  • Another object of the present invention is the generation of a pathogen resistance by reducing the function or activity of an Armadillo repeat ARM1 polypeptide comprising the sequences shown in SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 or a homo log thereof and / or a polypeptide which has a homology of at least 40% and / or a functional equivalent of the aforementioned polypeptides.
  • GAP Garnier et al. (1997) Nucleic Acids Res. 25: 3389ff) is calculated by setting the following parameters:
  • Gap Weight 50 Length Weight: 3
  • Homology between two polypeptides is understood to mean the identity of the amino acid sequence over the entire sequence length, as compared with the aid of the GAP program algorithm (Wisconsin Package Version 10.0, University of Wisconsin, Genetics Computer Group (GCG), Madison, USA) with the following parameters is calculated:
  • Gap Weight 8 Length Weight: 2
  • a sequence having a polypeptide-based homology of at least 80% with the sequence SEQ ID NO: 2 is understood as meaning a homology of, in a comparison with the sequence SEQ ID NO: 2 according to the above program algorithm with the above parameter set at least 80%.
  • a plant organ, plant tissue, a plant cell, or a part of a plant cell for example in a plant organ, plant tissue, a plant cell, or a part of a plant cell, eg a plant cell specific organelle that reduces Armadillo repeat ARM1 protein activity, function or polypeptide level.
  • the activity of a polypeptide containing at least one, preferably two or more Armadillo re- peats is reduced.
  • the polypeptide diminished in a plant or part of the plant has no U box in the 5'UTR.
  • armadillo repeat is meant a sequence containing tandem copies of a degenerate sequence of about 42 amino acids which encodes a three-dimensional structure for mediating protein-protein interactions (Azevedo et al. (2001) Trends Plant Sei.
  • the polypeptide used in the method of the invention or the polypeptide of the present invention has an activity involved in intracellular signal transduction or in the regulation of gene expression in cellular development processes.
  • the Armadillo repeat ARM1 protein is encoded, for example, by a nucleic acid molecule comprising a nucleic acid molecule selected from the group consisting of:
  • nucleic acid molecule which encodes a polypeptide having the sequence shown in SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62;
  • Nucleic acid molecule which contains at least one polynucleotide of the sequence according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33 , 35, 37, 39, 41, or 43;
  • nucleic acid molecule encoding a polypeptide whose sequence has an identity of 40%, 50%, 60%, 70%, 80%, 90%, 95%, 97%, 98%, 99% or more to the sequences SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 ;
  • nucleic acid molecule according to (a) to (c) which is responsible for a functional fragment or an epitope of the sequences according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 , 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 encodes;
  • nucleic acid molecule which encodes a polypeptide which is derived from a monoclonal antibody directed against a polypeptide which is blocked by the nucleic acid molecule. is coded according to (a) to (c) is recognized;
  • nucleic acid molecule which under stringent conditions with a nucleic acid molecule according to (a) to (c) or its partial fragments consisting of at least 15 nucleotides (nt), preferably 20 nt, 30 nt, 50 nt, 100 nt, 200 nt or 500 nt hybridized;
  • nucleic acid molecule which consists of a DNA library using a nucleic acid molecule according to (a) to (c) or its partial fragments of at least 15 nt, preferably 20 nt, 30 nt, 50 nt, 100 nt, 200 nt or 500 nt as a probe under stringent hybridization conditions can be isolated;
  • the activity of said polypeptides is reduced in a plant or part of a plant, preferably in the epidermis and / or mesophyll cells of a plant, as explained above.
  • the activity of ARM1 in lemma, palea, and / or gums is reduced.
  • epitope is meant the specificity of antibody-determining regions of an antigen (the antigenic determinant).
  • An epitope is therefore the part of an antigen that actually comes into contact with the antibody.
  • antigenic determinants are the regions of an antigen to which the T-cell receptors respond and subsequently produce antibodies that specifically bind the antigenic determinant / epitope of an antigen. Accordingly, antigens or their epitopes are able to induce the immune response of an organism with the consequence of the formation of specific antibodies directed against the epitope.
  • epitopes consist of linear sequences of amino acids in the primary structure of proteins, or complex secondary or tertiary protein structures.
  • a hapten is an epitope released from the context of the antigenic environment. Although haptens have by definition directed an antibody against themselves, haptens may not be able to induce an immune response after, for example, injection into an organism. For this purpose, haptens are coupled to carrier molecules.
  • DNP dinitrophenol
  • BSA bovine serum albumine
  • antibodies thus produced are also those which can bind the hapten alone.
  • the present invention relates to an antibody to a polypeptide characterized herein, more particularly to a monoclonal antibody that binds a polypeptide comprising or consisting of an AA sequence according to the sequences set forth in SEQ ID No: 2, 4, 6, 8 , 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 60, 61 or 62 are shown.
  • Antibodies in the context of the present invention can be used for the identification and isolation of polypeptides disclosed according to the invention from organisms, preferably plants, particularly preferably monocotyledonous plants.
  • the antibodies may be monoclonal, polyclonal, or synthetic in nature, or may consist of antibody fragments such as Fab, Fv, or scFv fragments resulting from proteolytic degradation.
  • Single chain Fv (scFv) fragments are single-chain fragments which, linked by a flexible linker sequence, contain only the variable regions of the heavy and light antibody chains. Such scFv fragments can also be produced as recombinant antibody derivatives.
  • a presentation of such antibody fragments on the surface of filamentous phage allows the direct selection of highly affine scFv molecules from combinatorial phage libraries.
  • Monoclonal antibodies can be obtained according to the method described by Kohler and Milstein (Nature 256 (1975), 495).
  • “Functional equivalents" of an Armadillo-Repeat ARM1 protein preferably means such polypeptides as those represented by the sequences SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26 , 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 have homology of at least 40% and have substantially the same properties or functions. Preferably, the homology is 50%, 60%, 70%, 80%, 90%, most preferably 95%, 97%, 98%, 99% or more.
  • Functional equivalence can be determined, for example, by comparing the phenotypes of test organisms after expression of the respective polypeptides under as identical conditions as possible or after reducing the expression or activity of the polypeptides to be compared in the respective original organisms.
  • "Substantially equivalent properties" of a functional equivalent means, above all, conferring a pathogen-resistant phenotype or conferring or increasing pathogen resistance to at least one pathogen while reducing the polypeptide amount, activity or function of said functional armadillo repeat ARM1 protein equivalent in a plant, organ , Tissue, part or cells, especially in epidermis or mesophyll cells thereof, preferably as measured by the penetration efficiency of a pathogen as shown in the examples.
  • Alkaline conditions means that all framework conditions such as culture or breeding conditions, assay conditions (such as buffer, temperature, substrates, pathogen concentration, etc.) are kept substantially identical between the experiments to be compared, and the approaches are to be compared only by the sequence of the experiments to be compared Armadillo repeat ARM1 polypeptides, their source organism and optionally the pathogen differ.
  • “Functional equivalents” also means natural or artificial mutation variants of the Armadillo-Repeat ARM 1 polypeptides according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 as well as homologous polypeptides from other monocotyledonous and dicotyledonous plants which further have substantially similar properties. Preferred are homologous polypeptides from preferred plants described herein. The sequences from other plants homologous to the Armadillo-Repeat ARM1 protein sequences disclosed in the context of this invention may be e.g. by database searching or screening of gene banks - using the Armadillo-Repeat ARM1 protein sequences as a search sequence or probe, respectively - are easily found.
  • Functional equivalents may e.g. also of one of the polypeptides according to the invention according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38 , 42, 44, 60, 61 or 62 are derived by substitution, insertion or deletion and to these polypeptides a homology of at least 40%, 50, 60%, preferably at least 80%, preferably at least 90%, particularly preferably at least 95%, most preferably at least 98% and are characterized by substantially the same functional properties as the polypeptides according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62.
  • Functional equivalents are also those of the nucleic acid sequences according to the invention according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 nucleic acid molecules derived by substitution, insertion or deletion, and have a homology of at least 40%, 50, 60%, preferred 80%, preferably at least 90%, particularly preferably at least 95%, very particularly preferably at least 98% to one of the polynucleotides according to the invention according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 and encode polypeptides having substantially identical functional properties as polypeptides according to SEQ ID No: 2, 4, 6, 8 , 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62.
  • Examples of the functional equivalents of the Armadillo-Repeat ARM1 proteins to be reduced in the method according to the invention according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 can be found, for example, from organisms whose genomic sequence is known by homology comparisons from databases.
  • those of the nucleic acid sequence according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37 , 39, 41, or 43 derived probes have a length of at least 20 bp, preferably at least 50 bp, more preferably at least 100 bp, most preferably at least 200 bp, most preferably at least 400 bp.
  • the probe may also be one or more kilobases long, e.g. 1 Kb, 1, 5 Kb or 3 Kb.
  • For the screening of the libraries can also be one of the under SEQ ID No: 1, 3, 5, 7, 9, 1 1, 13, 15, 17, 19, 21, 23 , 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 sequences complementary DNA strand, or a fragment thereof of a length between 20 bp and several kilobases.
  • DNA molecules which, under standard conditions, have the amino acids represented by SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 described and for Armadillo Repeat ARM 1 proteins encoding nucleic acid molecules that hybridize to these complementary nucleic acid molecules or parts of the above and encode as complete sequences for polypeptides substantially via the same properties, preferably functional properties, as in SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36 , 38, 42, 44, 60, 61 or 62 polypeptides.
  • Standard hybridization conditions is to be understood broadly and means stringent as well as less stringent hybridization conditions depending on the application. Such hybridization conditions include Sambrook J, Fritsch EF, Maniatis T et al., In Molecular Cloning (A Laboratory Manual), 2nd Ed., CoId Spring Harbor Laboratory Press, 1989, pp. 9.31-9.57) or in Current Protocols in Molecular Biology, John Wiley & Sons, NY (1989), 6.3.1-6.3.6. described.
  • the conditions during the washing step can be selected from low stringency (with about 2X SSC at 50 ° C) and high stringency (with about 0.2X SSC at 50 ° C preferably at 65 ° C) (2OX SSC: 0 , 3M sodium citrate, 3M NaCl, pH 7.0).
  • the temperature may be raised from low stringency conditions at room temperature, about 22 ° C, to more stringent conditions at about 65 ° C. Both parameters, salt concentration and temperature, can be varied simultaneously or individually, keeping the other parameter constant.
  • denaturing agents such as formamide or SDS may also be used. In the presence of 50% formamide, hybridization is preferably carried out at 42 ° C.
  • Hybridization conditions may be selected, for example, from the following conditions:
  • the hybridization conditions are chosen as follows:
  • a hybridization buffer containing formamide, NaCl and PEG 6000 is chosen.
  • the presence of formamide in the hybridization buffer destabilizes double-stranded nucleic acid molecules, allowing the hybridization temperature to be lowered to 42 ° C without thereby lowering the stringency.
  • the use of salt in the hybridization buffer increases the renaturation rate of a duplex DNA, or the hybridization efficiency.
  • PEG increases the viscosity of the solution, which has a negative influence on renaturation rates, the presence of the polymer in the solution increases the concentration of the probe in the remaining medium, which increases the rate of hybridization.
  • the composition of the buffer is:
  • the hybridizations are carried out at 42 ° C overnight.
  • the filters are changed the next morning 3x with 2 ⁇ SSC + 0.1% SDS for about 10 min. washed.
  • an increase in the resistance in the process according to the invention is achieved in that
  • Gene expression and “expression” are to be used synonymously and mean the realization of the information stored in a nucleic acid molecule.
  • the reduction in the expression of a gene therefore involves the reduction of the polypeptide amount of the encoded protein, e.g. of the Armadillo-Repeat ARM 1 polypeptide or the Armadillo-Repeat ARM1 protein function.
  • Reduction of gene expression of an Armadillo-Repeat ARM1 protein gene can be accomplished in a variety of ways, for example, by one of the methods listed below.
  • Reduction is to be construed broadly in the context of an Armadillo repeat ARM1 protein or Armadillo-Repeat ARM1 protein function and includes the partial or substantially complete inhibition or blocking of functionality based on different cell biological mechanisms an Armadillo repeat ARM1 polypeptide in a plant or its derived part, tissue, organ, cells or seeds.
  • a reduction within the meaning of the invention also includes a reduction in the amount of an Armadillo-Repeat ARM1 polypeptide to a substantially complete absence of the Armadillo-Repeat ARM1 polypeptide (ie lack of detectability of Armadillo-Repeat ARM1 protein function or lack of immuno-detectability of the Armadillo Repeat ARM1 protein).
  • the expression of a particular armadillo repeat ARM1 polypeptide or the armadillo repeat ARM1 protein function in a cell or an organism is preferably increased by more than 50%, more preferably by more than 80%, most preferably by more than 90%, compared to a suitable control, ie to the wild-type of the same type, e.g. of the same genus, species, variety, cultivar, etc. ("control plant”) to which this method has not been applied, under otherwise substantially identical conditions (such as, for example, culture conditions, age of the plants, etc.).
  • a reduction in Armadillo-Repeat ARM1 protein function is achieved by employing at least one method selected from the group consisting of:
  • nucleic acid molecule coding for an antisense ribonucleic acid molecule which has at least a 30% homology to the non-coding strand of one of the nucleic acid molecules of the invention, for example a nucleic acid molecule according to S SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 or coding for a conse- nus sequence as shown in SEQ ID NO .: 60, 61 or 62 or comprises a fragment of at least 15 base pairs which has at least a 50% homology to a noncoding strand of a nucleic acid molecule according to the invention, for example according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 or encoding a consensus sequence as shown in SEQ ID NO: 60, 61, or 62 or a functional equivalent has the same.
  • antisense nucleic acid sequence is directed against an armadillo repeat ARM1 protein gene (ie genomic DNA sequences) or an armadillo repeat ARM1 protein gene transcript (ie RNA sequences). Also included are ⁇ -anomeric nucleic acid sequences.
  • a ribozyme which specifically contains the nucleic acid molecule according to the invention, for example according to SEQ ID No: 1, 3, 5, 7, 9, 1 1, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 or encoding a consensus sequence as shown in SEQ ID NO .: 60, 61, or 62, or ribonucleic acid molecules encoded by their functional equivalents, eg, catalytically , or an expression cassette ensuring its expression.
  • nucleic acid molecules coding for sense ribonucleic acid molecules of a polypeptide according to the invention for example according to the sequences SEQ ID SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 for polypeptides having at least a 40% homology to the amino acid sequence of a subject invention
  • ARM1 proteins encoding genes to produce a loss of function e.g., generation of stop codons, in-frame shifts, etc.
  • any one of these methods may cause a reduction in Armadillo-Repeat ARM1 protein expression or Armadillo-Repeat ARM1 protein function within the meaning of the invention. Even a combined application is conceivable. Further methods are known to the person skilled in the art and can hinder or prevent the processing of the Armadillo-Repeat ARM1 polypeptide, the transport of the Armadillo repeat ARM1 polypeptide or its mRNA, inhibition of ribosome attachment, inhibition of RNA splicing, induction of an Armadillo repeat ARM 1 Protein RNA degrading enzyme and / or inhibiting translation elongation or termination. Reduction in armadillo repeat ARM1 protein function or polypeptide level is preferably achieved by decreased expression of an endogenous armadillo repeat ARM1 protein gene.
  • dsRNAi double stranded RNA interference
  • dsRNAi methods are based on the phenomenon that the simultaneous introduction of complementary strand and counterstrand of a gene transcripts a highly efficient suppression of the expression of the gene concerned is effected.
  • the phenotype produced is very close to that of a corresponding knock-out mutant (Waterhouse PM et al. (1998) Proc. Natl Acad., USA 95: 13959-64).
  • the dsRNAi method has proven to be particularly efficient and advantageous in reducing protein expression (WO 99/32619).
  • Armadillo-Repeat ARM1 protein nucleic acid sequence preferably means one of the sequences according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 or coding for a consensus sequence as shown in SEQ ID NO .: 60, 61, or 62, or sequences identical thereto in the Substantially identical, preferably at least 50%, 60%, 70%, 80% or 90% or more, for example about 95%, 96%, 97%, 98% or 99% or more, or fragments thereof, at least 17 base pairs long are.
  • the homology as defined above is at least 50%, for example, about 80%, or about 90%, or about 100% between the "sense" strand of an inhibitory dsRNA and a portion of an Armadillo-Repeat ARM1 protein nucleic acid sequence. between the "antisense" strand and the complementary strand of an Armadillo repeat ARM1 protein nucleic acid sequence).
  • the length of the subsection is about 17 bases or more, for example about 25 bases, or about 50 Bases, about 100 bases, about 200 bases or about 300 bases.
  • a "substantially identical" dsRNA may also be defined as a nucleic acid sequence capable of hybridizing to a portion of an Armadillo repeat ARM1 protein gene transcript under stringent conditions.
  • the "antisense" RNA strand may have insertions, deletions as well as single point mutations compared to the complement of the "sense” RNA strand.
  • the homology is at least 80%, for example, about 90%, or about 95%, or about 100% between the "antisense” RNA strand and the complement of the "sense” RNA strand.
  • the fragments preferably have a sequence length of about 20 bases or more, for example about 50 bases, or about 100 bases, or about 200 bases, or about 500 bases. Also included is the complete transcribed RNA or mRNA.
  • the dsRNA may consist of one or more strands of polymerized ribonucleotides.
  • modifications to both the sugar-phosphate backbone and the nucleosides may also be modifications to both the sugar-phosphate backbone and the nucleosides.
  • the phosphodiester bonds of the natural RNA may be modified to include at least one nitrogen or sulfur heteroatom.
  • Bases can be modified to limit the activity of, for example, adenosine deaminase. Such and other modifications are described below in the methods for stabilizing antisense RNA.
  • dsRNA molecules each comprising one of the ribonucleotide sequence portions defined above, may also be introduced into the cell or organism.
  • the dsRNA can be prepared enzymatically or in whole or in part chemically-synthetically.
  • the formation of the RNA duplex can be initiated either outside the cell or within it.
  • the dsRNA may also comprise a hairpin structure by joining "sense” and "antisense” strands through a "linker” (for example, an intron).
  • linker for example, an intron.
  • the self-complementary dsRNA structures are preferred because they only require the expression of a construct and always comprise the complementary strands in an equimolar ratio.
  • the expression cassettes coding for the "antisense” or “sense” strand of a dsRNA or for the self-complementary strand of the dsRNA are preferably inserted into a vector and stably (for example using selection markers) into the vector by the methods described below Genome of a plant inserted to ensure a permanent expression of the dsRNA.
  • the dsRNA can be introduced using an amount that allows at least one copy per cell. Higher levels (e.g., at least 5, 10, 100, 500, or 1000 copies per cell) may provide more efficient reduction, if desired.
  • the dsRNA preferably comprises sequence regions of Armadillo repeat ARM1 protein gene transcripts which correspond to conserved regions. Said conserved regions can be easily derived from sequence comparisons, e.g. As shown in Fiquren.
  • dsRNA sequences are derived from the conserved regions of the consensus sequence indicated in the figures. Particularly conserved ranges are: AA702 to AA739, AA742 to AA752, AA760 to AA762, AA771 to 779, AA789 to AA790, AA799 to AA821, AA829 to AA843, AA879 to AA905, AA924 to AA939 of the consensus sequence shown in the figures.
  • a dsRNA can be synthesized chemically or enzymatically.
  • cellular RNA polymerases or bacteriophage RNA polymerases such as T3, T7 or SP6 RNA polymerase
  • a dsRNA synthesized chemically or enzymatically in vitro can be completely or partially purified from the reaction mixture before introduction into a cell, tissue or organism, for example by extraction, precipitation, electrophoresis, chromatography or combinations of these methods.
  • the dsRNA can be introduced directly into the cell or it can also be applied extracellularly (for example in the interstitial space).
  • the plant is preferably stably transformed with an expression construct which implements the expression of the dsRNA. Corresponding methods are described below.
  • the hybrids Disruption can occur in a conventional manner via the formation of a stable duplex or, in the case of genomic DNA, by binding of the antisense nucleic acid molecule with the duplex of the genomic DNA by specific interaction in the major groove of the DNA helix.
  • An antisense nucleic acid molecule suitable for reducing an armadillo repeat ARM1 polypeptide can be prepared by using the nucleic acid sequence coding for this polypeptide, for example the nucleic acid molecule according to the invention according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43, or a nucleic acid molecule encoding a functional equivalent thereof, according to the Watson and Crick base pairing rules.
  • the antisense nucleic acid molecule may be complementary to the entire transcribed mRNA of said polypeptide, confined to the coding region or consist of only one oligonucleotide complementary to a portion of the mRNA coding or non-coding sequence.
  • the oligonucleotide may be complementary to the region comprising translation initiation for said polypeptide.
  • Antisense nucleic acid molecules may have a length of, for example, 20, 25, 30, 35, 40, 45 or 50 nucleotides, but may be longer and comprise 100, 200, 500, 1000, 2000 or 5000 nucleotides.
  • Antisense nucleic acid molecules can be expressed recombinantly or synthesized chemically or enzymatically using methods known to those skilled in the art. In the chemical synthesis, natural or modified nucleotides can be used.
  • Modified nucleotides may impart increased biochemical stability to the antisense nucleic acid molecule and result in increased physical stability of the duplex formed from antisense nucleic acid sequence and sense target sequence.
  • phosphorothioate derivatives and acridine-substituted nucleotides such as 5-fluorouracil, 5-bromouracil, 5-chlorouracil, 5-lodouracil, hypoxanthine, xanthine, 4-acetylcytosine, 5- (carboxyhydroxylmethyl) uracil, 5-carboxymethylaminomethyl-2- can be used.
  • thiouridine 5-carboxymethylaminomethyluracil, dihydrouracil, ⁇ -D-galactosylqueosine, inosine, N6-isopentenyladenine, 1-methyl-guanine, 1-methylinosine, 2,2-dimethylguanine, 2-methyladenine, 2-methylguanine, 3-methylcytosine, 5-methylcytosine, N6-adenine, 7-methylguanine, 5-methylamino-methyluracil, 5-methoxyaminomethyl-2-thiouracil, ⁇ -D-mannosyl queosine, 5'-methoxycarboxymethyluracil, 5-methoxyuracil, 2-methylthio-N6-isopentenyladenine, Uracil-5-oxyacetic acid, pseudouracil, quinines, 2-thiocytosine, 5-methyl-2-thiouracil, 2-thiouracil, 4-thiouracil, 5-methyluracil, uracil-5-oxyacetic acid
  • an armadillo repeat ARM1 polypeptide can be inhibited by nucleic acid molecules which are complementary to a conserved (for example as described above) or a regulatory An armadillo repeat ARM1 protein gene (eg, an armadillo repeat ARM1 protein promoter and / or enhancer) and form triple helical structures with the local DNA double helix, so that the transcription of the armadillo repeat ARM1 protein gene is reduced.
  • a conserved for example as described above
  • An armadillo repeat ARM1 protein gene eg, an armadillo repeat ARM1 protein promoter and / or enhancer
  • Corresponding methods are described (Helene C (1991) Anticancer Drug Res 6 (6): 569-84; Helene C et al. (1992) Ann NY Acad Sci 660: 27-36; Mower LJ (1992) Bioassays 14 (1992); 12): 807-815).
  • the antisense nucleic acid molecule may be an ⁇ -anomeric nucleic acid.
  • ⁇ -anomeric nucleic acid molecules form specific double-stranded hybrids with complementary RNA in which - in contrast to the conventional ⁇ -nucleic acids - the two strands run parallel to one another (Gautier C et al. (1987) Nucleic Acids Res 15: 6625-6641).
  • the antisense nucleic acid molecule may further include 2'-O-methylribonucleotides (Inoue et al. (1987) Nucleic Acids Res 15: 6131-6148) or chimeric RNA-DNA analogs (Inoue et al. (1987) FEBS Lett 215: 327- 330).
  • Catalytic RNA molecules or ribozymes can be adapted to any target RNA and cleave the phosphodiester scaffold at specific positions, thereby functionally deactivating the target RNA (Tanner NK (1999) FEMS Microbiol Rev 23 (3): 257) -275).
  • the ribozyme is not thereby modified itself, but is able to analogously cleave further target RNA molecules, thereby obtaining the properties of an enzyme.
  • ribozymes eg headammerhead "ribozymes, Haselhoff and Gerlach (1988) Nature 334: 585-591
  • ribozymes can be used to cleave the mRNA of an enzyme to be suppressed-for example, callose synthases-and to prevent translation
  • Methods for the expression of ribozymes for the reduction of certain polypeptides are described (in EP 0 291 533, EP 0 321 201, EP 0 360 257).
  • ribozyme expression has also been described (Steinecke P et al (1992) EM - BO J 11 (4): 1525-1530; de Feyter R et al. (1996) Mol Gen Gen.
  • Ribozymes can be identified via a selection process from a library of diverse ribozymes (Bartel D and Szostak JW (1993) Science 261: 141 1-1418).
  • the binding regions of the ribozyme hybridize to the conserved regions of the ARM protein as described above.
  • ribozyme technology can increase the efficiency of an antisense strategy.
  • Suitable target sequences and ribozymes can be prepared, for example, by secondary structure calculations as described in "Steinecke P, Riobzymes, Methods in Cell Biology 50, Galbraith et al., Eds, Academic Press, Inc. (1995), pp. 449-460" of ribozyme and target RNA and their interaction (Bayley CC et al (1992) Plant Mol Biol. 18 (2): 353-361; Lloyd AM and Davis RW et al. (1994) Mol Gen Genet. 242 (6): 653-657).
  • Tetrahymena L-19 IVS RNA can be constructed which have complementary regions to the mRNA of the Armadillo Repeat ARM1 protein to be suppressed (see also US 4,987,071 and US 5,116,742).
  • the introduced construct can represent the homologous gene to be diminished completely or only partially. The possibility for translation is not required. The application of this technology to plants is described, for example, in Napoli et al. (1990) The Plant Cell 2: 279-289 and in US 5,034,323.
  • Cosuppression is preferably realized using a sequence which is essentially identical to at least part of the nucleic acid sequence coding for an Armadillo repeat ARM1 protein or a functional equivalent thereof, for example the nucleic acid molecule according to the invention, for example the nucleic acid sequence according to SEQ ID No: 1, 3, 5, 7, 9, 1, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 or the nucleic acid sequence encoding a functional equivalent thereof.
  • Reduction of the activity of an Armadillo-Repeat ARM1 protein may also be realized by expression of a dominant-negative variant of this Armadillo-Repeat ARM1 protein.
  • Methods for reducing the function or activity of a polypeptide by means of coexpression of its dominant-negative form are known to the person skilled in the art (Lagna G and Hemmati-Brivanlou A (1998) Current Topics in Developmental Biology 36: 75-98; Perlmutter RM and Alberola Ila J (1996) Current Opinion in Immunology 8 (2): 285-90; Sheppard D (1994) American Journal of Respiratory Cell & Molecular Biology. 1 1 (1): 1-6; Herskowitz I (1987) Nature 329 (6136): 219-22).
  • a dominant-negative armadillo-repeat ARM1 protein variant can be made by altering amino acid residues that are part of the armadillo repeat ARM1 and, as a result of their mutation, the polypeptide loses its function.
  • Preferred amino acid residues to be mutated are those conserved in the Armadillo repeat ARM1 proteins of various organisms. Such conserved regions can be determined, for example, by means of computer-aided comparison ("alignment").
  • These mutations to achieve a dominant-negative Armadillo-Repeat ARM1 protein variant are preferably carried out at the level of the nucleic acid sequence coding for Armadillo-Repeat ARM1 proteins.
  • a corresponding mutation can be realized, for example, by PCR-mediated in vitro mutagenesis using corresponding oligonucleotide primers, by means of which the desired mutation is introduced.
  • methods familiar to the person skilled in the art are used.
  • the "LA PCR in vitro Mutagenesis Kit” (Takara Shuzo, Kyoto) can be used for this purpose.
  • Armadillo-Repeat ARM1 protein / gene expression is also possible with specific DNA-binding factors eg with factors of the type of zinc finger transcription factors. These factors attach to the genomic sequence of the endogenous target gene, preferably in the regulatory regions, and cause repression of the endogenous gene.
  • the use of such a method makes it possible to reduce the expression of an endogenous Armadillo repeat ARM1 protein gene, without having to genetically manipulate its sequence.
  • Corresponding methods for preparing such factors are described (Dreier B et al. (2001) J Biol Chem 276 (31): 29466-78; Dreier B et al.
  • armadillo repeat ARM1 protein gene This section is preferably in the region of the promoter region. For gene suppression, however, it can also be in the area of coding exons or introns.
  • the corresponding sections are available to the person skilled in the art by means of a database query from the gene bank or, starting from an Armadillo repeat ARM1 protein cDNA whose gene is not present in the gene bank, by screening a genomic library for corresponding genomic clones. The necessary procedures are familiar to the person skilled in the art.
  • the polypeptide binding factors can be e.g. Aptamers (Famulok M and Mayer G (1999) Curr Top Microbiol Immunol 243: 123-36) or antibodies or antibody fragments. The recovery of these factors is described and known to those skilled in the art.
  • cytoplasmic scFv antibody has been used to modulate the activity of the phytochrome A protein in genetically engineered tobacco plants (Owen M et al., (1992) Biotechnology (NY) 10 (7): 790-794, Franken E et (1997) Curr Opin Biotechnol 8 (4): 41 1-416, Whitelam (1996) Trend Plant Se 1: 286-272).
  • Gene expression can also be suppressed by tailored, low molecular weight synthetic compounds, for example of the polyamide type (Dervan PB and Bürli RW (1999) Current Opinion in Chemical Biology 3: 688-693; Gottesfeld JM et al. (2000) Gene Expr 9 (1-2): 77-91).
  • These oligomers consist of the building blocks 3- (dimethylamino) propylamine, N-methyl-3-hydroxypyrrole, N-methylimidazole and N-methylpyrroles and can be adapted to any piece of double-stranded DNA to bind sequence-specifically to the major groove and expression block the gene sequences there.
  • Corresponding methods have been described (see, inter alia, Bremer RE et al (2001) Bioorg Med Chem.
  • Armadillo repeat ARM1 protein expression can also be effectively induced by induction of the specific armadillo repeat ARM1 protein RNA degradation by the plant by means of a viral expression system (amplicon) (Angell, SM et al. (1999) Plant J. 20 (3) : 357-362).
  • amplicon Angell, SM et al. (1999) Plant J. 20 (3) : 357-362).
  • VIPGS viral induced gene silencing
  • dsRNAi the cosuppression by means of sense RNA and the "VIGS" ("virus-induced gene silencing") are also referred to as “post-transcriptional gene silencing” (PTGS).
  • PTGS methods are particularly advantageous because the requirements for homology between the endogenous gene to be suppressed and the transgenically expressed sense or dsRNA nucleic acid sequence are lower than, for example, in a classical antisense approach.
  • Corresponding homology criteria are mentioned in the description of the dsRNAI method and are generally applicable to PTGS methods or dominant-negative approaches.
  • nucleic acid construct suitable for inducing homologous recombination to genes encoding armadillo repeat ARM1 proteins - for example for the generation of knockout mutants.
  • nucleic acid construct which contains at least part of an endogenous armadillo repeat ARM1 protein gene which has been deleted, added or substituted by at least one Nucleotides - for example, in the preserved regions - is changed so that the functionality is reduced or eliminated altogether.
  • the primary, secondary, tertiary, or quaternary structure can be disturbed, for example, such that the binding ability of one or more armadillo repeats no longer exists.
  • a disorder can be effected, for example, by the mutation of one or more residues which are marked as conserved or highly conserved in the consensus sequence.
  • the alteration may also involve the regulatory elements (e.g., the promoter) of the gene such that the coding sequence remains unaltered but expression (transcription and / or translation) is omitted and diminished.
  • the regulatory elements e.g., the promoter
  • the altered region is flanked at its 5 'and 3' ends by additional nucleic acid sequences which must be of sufficient length to allow recombination.
  • the length is typically in the range of several hundred or more bases to several kilobases (Thomas KR and Capecchi MR (1987) Cell 51: 503; Strepp et al. (1998) Proc Natl Acad. 4368-4373).
  • the host organism - for example a plant - is transformed with the recombination construct using the methods described below, and successfully recombined clones are selected using, for example, antibiotic or herbicide resistance.
  • Suitable methods for reducing the Armadillo-Repeat ARM1 protein function are the introduction of nonsense mutations into endogenous Armadillo-Repeat ARM1 protein genes, for example by generating knockout mutants with the aid of eg T-DNA mutagenesis (Koncz et al. (1992) Plant Mol Biol 20 (5): 963-976), ENU- (N-ethyl-N-nitrosourea) mutagenesis or homoge- neous recombination (Hohn B and Puchta (1999) H Proc Natl Acad Sci USA 96: 8321- 8323) or EMS mutagenesis (Birchler JA, Schwartz D.
  • Point mutations can also be generated using DNA-RNA hybrid oligonucleotides, also known as "chimeraplasty” (Zhu et al., (2000) Nat Biotechnol 18 (5): 555-558, Cole-Strauss et al., (1999) Nucl Acids Res 27 (5): 1323-1330; Kmiec (1999) Gene therapy American Scientist 87 (3): 240-247).
  • the cell- or tissue-specific reduction of the activity of a sARM1 can be carried out, for example, by expressing a corresponding construct which, for example, an abovementioned nucleic acid molecule, eg the antisense RNA, dsRNA, RNAi, ribozyme, with a suitable tissue-specific promoter, for example, a promoter as described herein as specific for epidermis or mesophyll.
  • a tissue-specific promoter for example, a promoter as described herein as specific for epidermis or mesophyll.
  • “Mutations” in the sense of the present invention means the alteration of the nucleic acid sequence of a gene variant in a plasmid or in the genome of an organism Mutations can arise eg as a consequence of errors in the replication or caused by mutagens Organisms are very low, but a variety of biological, chemical or physical mutagens are known to those skilled in the art.
  • Mutations include substitutions, additions, deletions of one or more nucleic acid residues. Substitutions are understood to mean the exchange of individual nucleic acid bases, a distinction being made between transitions (substitution of a purine for a purine base or a pyrimidine for a pyrimidine base) and transversions (substitution of a purine for a pyrimidine base (or vice versa).
  • Addition or insertion means the incorporation of additional nucleic acid residues into the DNA, which may lead to shifts in the reading frame.
  • frameshifting distinguishes between "in frame” insertions / additions and “out of frame” insertions.
  • in-frame insertions / additions the reading frame is retained and a polypeptide increased by the number of amino acids encoded by the inserted nucleic acids is formed.
  • out of frame insertions / additions the original reading frame is lost and the formation of a complete and functional polypeptide is in many cases, of course, depending on the location of the mutation, no longer possible.
  • Deletions describe the loss of one or more base pairs, which also result in "in frame” or “out of frame” shifts of the reading frame and the consequent consequences on the formation of an intact protein.
  • mutagenic agents that can be used to generate random or targeted mutations and the methods and techniques that can be used are
  • Chemical mutagens can be subdivided according to their mechanism of action.
  • base analogues eg 5-bromouracil, 2-aminopurine
  • monofunctional and bifunctional alkylating agents eg monofunctional such as ethyl methyl sulfonate, dimethyl sulfate or bifunctional such as dichloroethyl sulfite, mitomycin, nitrosoguanidine dialkylnitrosamine, N-nitrosoguanidine derivatives
  • intercalating agents eg acridine, ethidium bromide.
  • Ionizing radiations are electromagnetic waves or particle radiations capable of ionizing molecules, i. to remove from these electrons. The remaining ions are usually very reactive, so that if they arise in living tissue, they can cause great damage, for example to the DNA and (at low intensity) thereby induce mutations.
  • Ionizing radiations are e.g. Gamma radiation (photon energy of about one megaelectron volt MeV), X-rays (photon energy of several or many kiloelectron volts keV) or ultraviolet light (UV light, photon energy of more than 3.1 eV). UV light causes the formation of dimers between bases, the most common being thymidine dimers, which give rise to mutations.
  • EMS Ethyl methyl sulfonate
  • ionizing Radiation is by the use of biological mutagens eg Transposons (eg Tn5, Tn903, Tn916, Tn1000, Balcells et al., 1991, May BP et al. (2003) Proc Natl Acad.
  • polypeptides for the process according to the invention which are obtained as a result of a mutation of a polypeptide according to the invention, e.g. according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, 44, 60, 61 or 62 receives.
  • anti-armadillo repeat ARM1 protein compounds All substances and compounds which directly or indirectly bring about a reduction in the polypeptide amount, RNA amount, gene activity or polypeptide activity of an Armadillo repeat ARM1 protein are summarized in this application under the name "anti-armadillo repeat ARM1 protein compounds".
  • anti-armadillo repeat ARM1 protein compound explicitly includes the nucleic acid sequences, peptides, proteins or other factors used in the above-described methods.
  • an increase in the resistance to pathogens from the families of Blumeriaceae, Pucciniaceae, Mycosphaerellaceae and Hypocreaceae in a monocotyledonous or dicotyledonous plant, or an organ, tissue or a cell thereof, is achieved by:
  • transgene is meant, for example, with respect to a nucleic acid sequence, an expression cassette or a vector containing said nucleic acid sequence or an organism transformed with said nucleic acid sequence, expression cassette or vector, all such genetically engineered constructions or organisms in which either
  • Natural genetic environment means the natural chromosomal locus in the lineage or the presence in a genomic library. In the case of a genomic library, the natural, genetic environment of the nucleic acid sequence is preferably at least partially preserved.
  • the environment flanks the nucleic acid sequence at least on one side and has a sequence length of at least 50 bp, preferably at least 500 bp, particularly preferably at least 1000 bp, very particularly preferably at least 5000 bp.
  • a naturally occurring expression cassette for example, the naturally occurring combination of the Armadillo repeat ARM1 protein promoter with the corresponding Armadillo repeat ARM1 protein gene - becomes a transgenic expression cassette when expressed by non-natural, synthetic ("artificial") methods such as For example, a mutagenization is changed.
  • non-natural, synthetic synthetic
  • Delivery in the context of the invention includes all methods which are suitable for introducing or adding an "anti-Armadillo Repeat ARM1 Protein Compound", directly or indirectly, into a plant or cell, compartment, tissue, organ or semen to generate. Direct and indirect procedures are included. The introduction can lead to a transient presence of an "anti-armadillo repeat ARM1 protein compound” (for example a dsRNA) or else to a permanent (stable) one.
  • an anti-armadillo repeat ARM1 protein compound for example a dsRNA
  • the "anti-armadillo-repeat ARM1 protein compound” can exert its function directly (for example, by insertion into an endogenous armadillo repeat ARM1 protein gene).
  • the function can also be carried out indirectly after transcription into an RNA (for example in the case of antisense approaches) or after transcription and translation into a protein (for example in binding factors). Both direct and indirect "anti-callose synthase compounds" are included in the invention.
  • “Introduction” in the context of the present description generally includes, for example, methods such as transfection, transduction or transformation.
  • anti-armadillo repeat ARM1 compound also comprises recombinant expression constructs which "antisense” an expression (ie transcription and, if appropriate, translation) of, for example, an armadillo repeat ARM1 protein dsRNA or an armadillo repeat ARM1 protein.
  • RNA - preferably in a plant or a part, tissue, organ or seeds thereof - condition.
  • Said expression constructs / expression cassettes contain a nucleic acid molecule whose expression (transcription and possibly translation) generates an "anti-armadillo-repeat ARM1 protein compound", preferably in functional linkage with at least one genetic control element (for example a promoter) which expresses guaranteed in plants.
  • the expression construct is to be introduced directly into the plant and the "anti-armadillo repeat ARM1 protein compound" (for example the Armadillo repeat ARM1 protein dsRNA) is generated there in planta
  • plant-specific genetic control elements for example promoters
  • the "anti-armadillo repeat ARM1 protein compound” can also be produced in other organisms or in vitro and then introduced into the plant. All prokaryotic or eukaryotic genetic control elements (for example promoters) which permit expression in the particular plant chosen for the production are preferred in this.
  • a “functional” link is meant, for example, the sequential arrangement of a promoter with the nucleic acid sequence to be expressed (for example, an "anti-armadillo repeat ARM1 protein compound") and optionally further regulatory elements such as a terminator such that each of the Regulatory (or regulatory) elements may fulfill their function in the transgenic expression of the nucleic acid sequence, depending on the arrangement of the nucleic acid sequences to sense or antisense RNA.This does not necessarily require a direct linkage in the chemical sense.
  • Geneetic control sequences, such as Enhancer sequences may also perform their function from more distant positions or even from other DNA molecules on the target sequence, Preferred arrangements are those in which the nucleic acid sequence to be transgenically expressed is positioned behind the promoter sequence, so that both sequences are covalent With are connected to each other.
  • the distance between the promoter sequence and the nucleic acid sequence to be expressed transgenically is preferably less than 200 base pairs, more preferably less than 100 base pairs, very particularly preferably less than 50 base pairs.
  • sequences can be positio- ned.
  • insertion of sequences may result in the expression of fusion proteins.
  • the expression cassette consisting of a linkage of promoter and nucleic acid sequence to be expressed, can be integrated in a vector and inserted by, for example, transformation into a plant genome.
  • an element for example an "anti-armadillo-repeat ARM1 protein compound” (for example a nucleic acid sequence coding for an armadillo repeat ARM1 protein dsRNA or an armadillo repeat ARM1 protein antisense RNA) can be placed behind an endogenous promoter be that the same effect occurs. Both approaches lead to expression cassettes in the context of the invention.
  • Plant-specific promoters basically means any promoter that can control the expression of genes, especially foreign genes, in plants or plant parts, cells, tissues, cultures.
  • the expression may be, for example, constitutive, inducible or developmentally dependent.
  • Preferred promoters are:
  • Promoters which ensure expression in numerous, preferably all, tissues over a longer period of plant development, preferably at all times in plant development.
  • a plant promoter or a promoter derived from a plant virus is particularly preferred.
  • the promoter of the 35S transcript of CaMV cauliflower mosaic virus (Franck et al., (1980) Cell 21: 285-294; Odell et al. (1985) Nature 313: 810-812; Shewmaker et al. 1985 Virology 140: 281-288; Gardner et al. (1986) Plant Mol Biol 6: 221-228) or the 19S CaMV promoter (US 5,352,605; WO 84/02913; Benfey et al.
  • Another suitable constitutive promoter is the "Rubisco small subunit (SSU)" promoter (US Pat. No. 4,962,028), the Agrobacterium nopaline synthase promoter, the TR double promoter, the Agrobacterium OCS (octopine synthase) promoter, the ubiquitin promoter (US Pat. Holtorf S et al. (1995) Plant Mol Biol 29: 637-649), the ubiquitin 1 promoter (Christensen et al., (1992) Plant Mol Biol 18: 675-689, Bruce et al.
  • SSU Rostorf S et al.
  • nitrilase-1 nit1 gene from A. thalia (GenBank Acc. No .: Y07648.2, nucleotides 2456-4340, Hillebrand et al. (1996) Gene 170: 197 -200).
  • promoters having specificity for anthers, ovaries, flowers, leaves, stems, roots or seeds are used.
  • Seed-specific promoters such as the promoter of phaseolin (US 5,504,200, Bustos MM et al. (1989) Plant Cell 1 (9): 839-53), 2S albumining (Joseffson LG et al. (1987) J Biol Chem 262: 12196-12201), the legume (Shirsat A et al., (1989) Mol Gen Genet 215 (2): 326-331), the USP (unknown seed protein, Baumlein H et al., (1991) Mol Gen Genet 225 (3 ): 459-67), the napin gene (US 5,608,152, Stalberg K et al.
  • phaseolin US 5,504,200, Bustos MM et al. (1989) Plant Cell 1 (9): 839-53
  • 2S albumining Jaseffson LG et al. (1987) J Biol Chem 262: 12196-12201
  • the legume Shirsat A et al., (1989) Mol Gen Gene
  • seed-specific promoters are those of the genes coding for high molecular weight glutenin (HMWG), gliadin, branching enzyme, ADPglucose pyrophosphatase (AGPase) or starch synthase. Also preferred are promoters which allow seed-specific expression in monocotyledons such as corn, barley, wheat, rye, rice, etc.
  • HMWG high molecular weight glutenin
  • AGPase ADPglucose pyrophosphatase
  • starch synthase starch synthase.
  • promoters which allow seed-specific expression in monocotyledons such as corn, barley, wheat, rye, rice, etc.
  • the promoter of the lpt2 or lpt1 gene (WO 95/15389, WO 95/23230) or the promoters described in WO 99/16890 (promoters of the hordein gene, the glutelin gene, the oryzine gene, of the Prolamin gene, the gliadin gene, the zein gene, the kasirin gene or the secalin gene).
  • Tuber, storage-root or root-specific promoters such as the patatin promoter class I (B33), and the promoter of the cathepsin D inhibitor from potato.
  • Leaf-specific promoters such as the potato cytosolic FBPase promoter (WO 97/05900), the Rubisco (ribulose-1, 5-bis-phosphate carboxylase) SSU promoter (small subunit) or the potato ST-LSI promoter (Stockhaus et al. (1989) EMBO J 8: 2445-2451).
  • Epidermis-specific promoters such as the promoter of the OXLP gene ("oxalate oxidase like protein"; Wei et al. (1998) Plant Mol. Biol. 36: 101-112).
  • tissue-specific promoters are, for example:
  • Flower specific promoters such as the phytoene synthase promoter (WO 92/16635) or the promoter of the P-rr gene (WO 98/22593).
  • Anther-specific promoters such as the 5126 promoter (US 5,689,049, US 5,689,051), the globbl promoter and the fa
  • the expression cassettes may also contain a chemically inducible promoter (reviewed in Gatz et al., (1997) Annu., Rev. Plant Physiol Plant Mol Biol 48: 89-108), which expresses the expression of the exogenous gene in the plant Timing can be controlled.
  • a chemically inducible promoter as e.g. the PRP1 promoter (Ward et al. (1993) Plant Mol Biol 22: 361-366), a salicylic acid-inducible promoter (WO 95/19443), a benzenesulfonamide-inducible promoter (EP 0 388 186), a tetracycline inducible promoter (Gatz et al.
  • a scisinic acid-inducible promoter (EP 0 335 528) or an ethanol- or cyclohexanone-inducible promoter (WO 93/21334) may also be used become.
  • an Armadillo Repeat ARM1 protein function reducing or inhibiting molecule such as e.g. the above enumerated dsRNA, ribozymes, antisense nucleic acid molecules, etc. are induced at appropriate times.
  • RNAi constructs used to reduce the callose synthase polypeptide amount, activity or function, which, for example when using pathogen-inducible promoters, allows expression only in case of need (ie pathogen attack) ,
  • promoters which are active in plants and which are pathogen-inducible promoters are used in plants.
  • Pathogen-inducible promoters include the promoters of genes induced by pathogen attack, such as genes of PR proteins, SAR proteins, ⁇ -1,3-glucanase, chitinase, etc. (for example, Redolfi et al., (1983) Neth J Plant Pathol 89: 245-254; Uknes, et al. (1992) Plant Cell 4: 645-656; Van Loon (1985) Plant Mol Viral 4: 11 1-1 16; Marineau et al. (1987) Plant Mol Biol 9: 335-342; Matton et al.
  • wound inducible promoters such as the pinll gene (Ryan (1990) Ann Rev Phytopath 28: 425-449, Duan et al (1996) Nat Biotech 14: 494-498), the WUN1 and WUN2 genes (US 5,428,148), the win1 and win2 genes (Stanford et al., (1989) Mol Gen Genet 215: 200-208), the systemin (McGurl et al., (1992) Science 225: 1570-1573), the WIP1 gene (Rohmeier et al., (1993) Plant Mol Biol 22: 783-792, Eckelkamp et al (1993) FEBS Letters 323: 73-76), the MPI gene (Corderok et al., (1994) Plant J 6 (2 ): 141-150) and the like.
  • the pinll gene Rost al., (1990) Ann Rev Phytopath 28: 425-449, Duan et al (1996) Nat Biotech 14: 4
  • a source of further pathogen-inducible promoters is the PR gene family.
  • a number of elements in these promoters have proven to be advantageous.
  • region -364 to -288 in the promoter of PR-2d mediates salicylate specificity (Buchel et al. (1996) Plant Mol Biol 30, 493-504).
  • the sequence 5'-TCATCTTCTT-3 'appears repeatedly in the promoter of the barley ß-1, 3-glucanase and in more than 30 other stress-induced genes. This region binds to tobacco a nuclear protein whose abundance is increased by salicylate.
  • the PR-1 promoters from tobacco and Arabidopsis are likewise suitable as pathogen-inducible promoters.
  • the "aeidie P /? 5" (aPR5) promoters are from barley (Schweizer et al. (1997) Plant Physiol 1 14: 79-88) and wheat (Rebmann et (1991) Plant Mol Biol 16: 329-331). aPR5 proteins accumulate in about 4 to 6 hours after pathogen attack and show only a very low background expression (WO 99/66057).
  • pathogen-induced specificity is the production of synthetic promoters from combinations of known pathogen-responsive elements (Rushton et al. (2002) Plant Cell 14, 749-762; WO 00/01830; 99/66057). Further pathogen-inducible promoters of various types are known to the person skilled in the art (EP-A 1 165 794, EP-A 1 062 356, EP-A 1 041 148, EP-A 1 032 684).
  • pathogen-inducible promoters include the flax Fis / promoter (WO 96/34949), the Vst1 promoter (Schubert et al. (1997) Plant Mol Biol 34: 417-426) and the tobacco EAS4 sesquiterpene cyclase promoter (US 6,100,451).
  • promoters which are induced by biotic or abiotic stress for example the pathogen-inducible promoter of the PRP1 gene (or gst1 promoter), for example from potato (WO 96/28561, Ward et al., (1993) Plant Mol Biol 22: 361-366), the heat-inducible hsp70 or hsp80 promoter from tomato (US 5,187,267), the cold-inducing alpha-amylase promoter from the potato
  • mesophyll tissue-specific promoters such as, for example, the promoter of the wheat germ 9f-3.8 gene (GenBank Acc. No .: M63224) or the barley GerA promoter (WO 02/057412) are used. Said promoters are particularly advantageous since they are both medley-specific and pathogen-inducible. Also suitable is the mesophyll tissue-specific Arabidopsis CAB-2 promoter (GenBank Acc. No .: X15222), and the Zea mays PPCZmI promoter (GenBank Acc. No .: X63869) or homologs thereof.
  • Mesophyll tissue-specific means a restriction of the transcription of a gene caused by the specific interaction of cis elements present in the promoter sequence and transcription factors binding thereto to as few mesophyll tissue-containing plant tissues as possible, preferably a transcription restricted to the mesophyll tissue.
  • suitable promoters are, for example, fruiting-specific promoters, such as, for example, the fruit maturation-specific promoter from tomato (WO 94/21794, EP 409 625).
  • Fruiting-specific promoters such as, for example, the fruit maturation-specific promoter from tomato (WO 94/21794, EP 409 625).
  • “Development-dependent promoters” includes in part the tissue-specific promoters, since the formation of individual tissues is naturally development-dependent.
  • promoters may be functionally linked to the nucleic acid sequence to be expressed, which may be expressed in further plant tissues or in other organisms, such as E.c ⁇ // allow bacteria.
  • E.c ⁇ any promoters described above are suitable as plant promoters.
  • the nucleic acid sequences contained in the expression cassettes or vectors according to the invention can be functionally linked to further genetic control sequences in addition to a promoter.
  • the term "genetic control sequences" is to be understood broadly and means all those sequences which have an influence on the production or the function of the expression cassette according to the invention. Genetic control sequences, for example, modify transcription and translation in prokaryotic or eukaryotic organisms.
  • the expression cassettes according to the invention 5'-upstream of the respective transgenic nucleic acid sequence comprise a promoter with one of the specificity described above and 3'-downstream terminator sequence as additional genetic control sequence, and optionally further conventional regulatory elements, in each case functionally linked to the transgenic nucleic acid sequence to be expressed.
  • Genetic control sequences also include other promoters, promoter elements or minimal promoters that can modify the expression-controlling properties.
  • the tissue-specific expression can be additionally dependent on certain stress factors.
  • Corresponding elements are, for example, water stress, abscisic acid (Lam E and Chua NH J Biol Chem 1991, 266 (26): 17131-17135) and heat stress (Schoffl F et al., Molecular & General Genetics 217 (2-3): 246-53, 1989).
  • Genetic control sequences also include the 5 'untranslated regions, introns or non-coding 3' regions of genes such as the actin-1 intron, or the adh1-s introns 1, 2 and 6 (commonly: The Maize Handbook, Chapter 1 16, Freeling and Walbot, Eds., Springer, New York (1994)). These have been shown to play a significant role in the regulation of gene expression. It has been shown that 5'-untranslated sequences can enhance the transient expression of heterologous genes.
  • An example of translational amplifiers is the 5 'leader sequence from the tobacco mosaic virus (GaIMe et al. (1987) Nucl Acids Res 15: 8693-8711) and the like. They may also promote tissue specificity (Rouster J et al. (1998) Plant J 15: 435-440).
  • the expression cassette may advantageously contain one or more so-called “enhancer sequences” functionally linked to the promoter, which allow increased transgenic expression of the nucleic acid sequence. Additional advantageous sequences can also be inserted at the 3 'end of the nucleic acid sequences to be expressed transgenically, such as further regulatory elements or terminators.
  • the transgenic nucleic acid sequences to be expressed may be contained in one or more copies in the gene construct.
  • Polyadenylation signals which are suitable as control sequences are plant polyadenylation signals, preferably those which essentially correspond to T-DNA polyadenylation signals from Agrobacterium tumefaciens, in particular gene 3 of the T-DNA (octopine synthase) of the Ti plasmid pTiACHS (Gielen et al. (1984) EMBO J 3: 835 ff) or functional equivalents thereof.
  • particularly suitable terminator sequences are the OCS (octopine synthase) terminator and the NOS (nopaline synthase) terminator.
  • Control sequences are furthermore to be understood as meaning those which permit homologous recombination or insertion into the genome of a host organism or permit removal from the genome.
  • the natural promoter of a particular gene may be replaced with a promoter having specificity for the embryonic epidermis and / or the flower.
  • an expression cassette and the vectors derived from it may contain further functional elements.
  • the term functional element is to be understood broadly and means all those elements which have an influence on the production, multiplication or function of the expression cassettes, vectors or transgenic organisms according to the invention.
  • functional element is to be understood broadly and means all those elements which have an influence on the production, multiplication or function of the expression cassettes, vectors or transgenic organisms according to the invention.
  • Selection markers which confer resistance to a metabolism inhibitor such as 2-deoxyglucose-6-phosphate (WO 98/45456), antibiotics or biocides, preferably herbicides such as kanamycin, G 418, bleomycin, hygromycin or phosphinotricin etc.
  • herbicides such as kanamycin, G 418, bleomycin, hygromycin or phosphinotricin etc.
  • Particularly preferred selection markers are those which confer resistance to herbicides.
  • DNA sequences which encode phosphinothricin (PAT) and inactivate glutamin synthase inhibitors bar and pat genes
  • PAT phosphinothricin
  • EPP synthase genes 5-Enolpyruvyl- shikimate-3-phosphate
  • glyphosate ® N- ( phosphonomethyl) glycine
  • the glyphosate-degrading enzymes encoding ® gox gene glyphosate oxidoreductase
  • the deh gene encoding a dehalogenase which inactivates dalapon
  • sulfonylurea- and Imidazolinone inactivating acetolactate synthases and bxn genes encoding bromoxynil degrading nitrilase enzymes
  • the aasa gene conferring resistance to the antibiotic apectinomycin
  • streptomycin phosphotransferase (SPT) gene conferring resistance to strept
  • HPT hygromycin phosphotransferase
  • ALS acetolactate synthase gene
  • Reporter genes which code for easily quantifiable proteins and ensure an evaluation of the transformation efficiency or of the expression site or time point via intrinsic color or enzyme activity. Reporter proteins (Schenborn E, Groskreutz D. Mol Biotechnol 1999, 13 (1): 29-44) such as the "green fluorescence protein” (GFP) (Sheen et al. (1995) Plant
  • Replication origins that ensure an increase of the expression cassettes or vectors according to the invention in, for example, E. coli.
  • examples include ORI (origin of DNA replication), pBR322 ori or P15A ori (Sambrook et al.: Molecular Cloning, A Laboratory Manual, 2 ⁇ d Ed., Colard Spring Harbor Laboratory Press, ColD Spring Harbor, NY, 1989).
  • a selectable marker that successfully transforms Cells confers resistance to a biocide (for example a herbicide), a metabolism inhibitor such as 2-deoxyglucose-6-phosphate (WO 98/45456) or an antibiotic.
  • a biocide for example a herbicide
  • a metabolism inhibitor such as 2-deoxyglucose-6-phosphate (WO 98/45456) or an antibiotic.
  • the selection marker allows the selection of the transformed cells from untransformed (McCormick et al. (1986) Plant Cell Reports 5: 81-84).
  • an expression cassette according to the invention into an organism or cells, tissues, organs, parts or seeds thereof (preferably in plants or plant cells, tissues, organs, parts or seeds) can advantageously be realized using vectors in which the Expression cassettes are contained.
  • the expression cassette can be introduced into the vector (for example a plasmid) via a suitable restriction site.
  • the resulting plasmid is first introduced into E. coli. Correctly transformed E. coli are selected, grown and recovered the recombinant plasmid by methods familiar to those skilled in the art. Restriction analysis and sequencing may serve to verify the cloning step.
  • Vectors may be, for example, plasmids, cosmids, phages, viruses or else agrobacteria.
  • the introduction of the expression cassette is realized by means of plasmid vectors. Preference is given to those vectors which enable a stable integration of the expression cassette into the host genome.
  • RNA molecules or proteins formed as a result of its gene expression be introduced into the corresponding host cell.
  • transformation a variety of methods are available (Keown et al., (1990) Methods in Enzymology 185: 527-537).
  • the DNA or RNA can be introduced directly by microinjection or by bombardment with DNA-coated microparticles.
  • the cell can be permeabilized chemically, for example with polyethylene glycol, so that the DNA can enter the cell by diffusion.
  • the DNA can also be made by protoplast fusion with other DNA-containing moieties such as minicells, cells, lysosomes or liposomes. Electroporation is another suitable method for introducing DNA, in which the cells are reversibly permeabilized by an electrical pulse.
  • Suitable methods are in particular the protoplast transformation by polyethylene glycol-induced DNA uptake, the biolistic method with the gene gun, i. the so-called “particle bombardment” method, the electroporation, the incubation of dry embryos in DNA-containing solution and the microinjection.
  • transformation can also be carried out by bacterial infection, for example by means of Agrobacterium tumefaciens or Agrobacterium rhizogenes.
  • Agrobacterium tumefaciens or Agrobacterium rhizogenes.
  • the methods are described, for example, in Horsch RB et al. (1985) Science 225: 1229f).
  • the expression cassette is to be integrated into special plasmids, either into an intermediate vector (shuttle or intermediate vector) or a binary vector. If a Ti or Ri plasmid is used for the transformation, preferably at least the right border, but most preferably the right and the left border of the Ti or Ri plasmid T-DNA is connected as flanking region with the expression cassette to be introduced.
  • binary vectors are used.
  • Binary vectors can replicate both in E.colia and in Agrobacterium. They usually contain a selection marker gene and a linker or polylinker flanked by the right and left T-DNA restriction sequence. They can be transformed directly into Agrobacterium (Holsters et al., (1978) Mol Gen Genet 163: 181-187).
  • the selection marker gene allows for selection of transformed agrobacteria and is, for example, the nptll gene conferring resistance to kanamycin.
  • the Agrobacterium acting as a host organism in this case should already contain a plasmid with the vir region. This is required for the transfer of T-DNA to the plant cell.
  • Such transformed Agrobacterium can be used to transform plant cells.
  • T-DNA T-DNA to transform plant cells has been extensively studied and described (Hoekema, In: The Binary Plant Vector System, Offsetdrukkerij Kanters BV, Alblasserdam, Chapter V. An et al., (1985) EMBO J 4: 277-287).
  • Various binary vectors are known and partially commercially available such as pBI101.2 or pBIN19 (Clontech Laboratories, Inc. USA).
  • Stably transformed cells i. those containing the introduced DNA integrated into the DNA of the host cell can be selected from untransformed if a selectable marker is part of the introduced DNA.
  • a selectable marker is part of the introduced DNA.
  • any gene that can confer resistance to antibiotics or herbicides such as kanamycin, G 418, bleomycin, hygromycin or phosphinotricin, etc.
  • Transformed cells expressing such a marker gene are capable of surviving in the presence of concentrations of a corresponding antibiotic or herbicide that kill an untransformed wild-type. Examples are mentioned above and preferably include the bar gene conferring resistance to the herbicide phosphinotricin (Rathore KS et al.
  • the construct to be expressed is cloned into a vector suitable for transforming Agrobacterium tumefaciens, for example pBin19 (Bevan et al. (1984) Nucl Acids Res 12: 87111).
  • Plant can be obtained using methods known in the art. This is an example of callus cultures. From these still undifferentiated cell masses, the formation of shoot and root can be induced in a known manner. The obtained sprouts can be planted out and bred.
  • the person skilled in the art also knows methods for regenerating plant cells, plant parts and whole plants. For example, methods for this are described by Fennell et al. (1992) Plant Cell Rep. 1 1: 567-570; Stoeger et al. (1995) Plant Cell Rep. 14: 273-278; Jahne et al. (1994) Theor Appl Genet 89: 525-533.
  • the method according to the invention can advantageously be combined with further methods which bring about a pathogen resistance (for example against insects, fungi, bacteria, nematodes, etc.), stress resistance or another improvement of the plant properties. Examples include Dunwell JM, Transgenic ap- proaches to crop improvement, J Exp Bot. 2000; 51 Spec No; Page 487-96.
  • the reduction in the function of an Armadillo-Repeat ARM1 protein in a plant is combined with an increase in the activity of a Bax inhibitor 1 protein.
  • This can be accomplished, for example, by expression of a nucleic acid sequence encoding a Bax inhibitor-1 protein, e.g. in mesophyll tissue and / or root tissue.
  • the Bax inhibitor-1 proteins from Hordeum vulgaric or Nicotiana tabacum are particularly preferred.
  • the invention further relates to nucleic acid molecules which encode nucleic acid molecules encoding armadillo repeat ARM1 proteins from barley according to the polynucleotides SEQ. ID No: 1, as well as the complementary nucleic acid sequences, and the sequences derived by degeneracy of the genetic code and those for functional equivalents of the polypeptides according to SEQ. ID No. 1 nucleic acid molecules, wherein the nucleic acid molecules do not consist of SEQ ID NO: 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 exist.
  • Another object of the invention relates to the armadillo repeat ARM1 protein from barley according to SEQ. ID No .: 2 or one comprising these sequences, as well as functional equivalents thereof which are not one of the sequences of SEQ ID Nos. 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 42, or 44, respectively.
  • dsRNA molecule double-stranded RNA nucleic acid molecules
  • dsRNA molecule double-stranded RNA nucleic acid molecules
  • the scythe Strand of said dsRNA molecule at least one homology of 30%, preferably at least 40%, 50%, 60%, 70% or 80%, more preferably at least 90%, most preferably 100% to a nucleic acid molecule according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43, or a fragment of at least 17 base pairs, preferably at least 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 base pairs, more preferably at least 40, 50, 60, 70, 80 or 90 base pairs, all more preferably at least 100, 200, 300 or 400 base pairs, most preferably at least 500, 600, 700, 800, 900 at least 1000 base pairs n and at least 50%, 60%, 70% or
  • the double-stranded structure can be formed starting from a single, self-complementary strand or from two complementary strands.
  • "sense” and “antisense” sequences are linked by a linking sequence ("linker") and may, for example, form a hairpin structure.
  • the joining sequence may be an intron that is spliced out after synthesis of the dsRNA.
  • the nucleic acid sequence encoding a dsRNA may include other elements, such as transcription termination signals or polyadenylation signals.
  • transgenic expression cassettes comprising one of the nucleic acid sequences according to the invention.
  • the nucleic acid sequence encoding the Armadillo-Repeat ARM1 proteins from barley, wheat and maize is linked to at least one genetic control element as defined above in such a way that expression (transcription and optionally translation) in any organism - preferably in monocotyledonous plants - can be realized. Suitable genetic control elements are described above.
  • the transgenic expression cassettes may also contain other functional elements as defined above.
  • Such expression cassettes contain, for example, a nucleic acid sequence according to the invention, e.g. one which is essentially identical to a nucleic acid molecule according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35 , 37, 39, 41, or 43 or a fragment according to the invention thereof, wherein said nucleic acid sequence is preferably in sense orientation or in antisense orientation to a promoter and thus can lead to the expression of sense or antisense RNA, wherein said promoter is an active promoter in plants, preferably a pathogen-inducible promoter.
  • transgenic vectors are also included which include the said transgenic expression cassettes.
  • Another subject matter of the invention relates to plants which by natural processes or induced artificially contain one or more mutations in a nucleic acid molecule which has the nucleic acid sequence according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43, wherein said mutation is a decrease in the activity, function or polypeptide amount of one of the nucleic acid molecules according to SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43 coded polypeptide causes. For example, one made by Tilling and identified mutation.
  • Preferred plants are those belonging to the family Poaceae, particularly preferred are plants selected from the plant genera Hordeum, Avena, Seeale, Triticum, Sorghum, Zea, Saccharum and Oryza, most preferably plants selected from the species Hordeum vulgare (barley), Triticum aestivum (wheat), Triticum aestivum subsp.spelta (spelled), triticale, Avena sative (oats), Seccale cereale (rye), Sorghum bicolor (millet), Zea mays (corn), Saccharum officinum (sugar cane) and Oryza sative (rice).
  • the invention relates to a monocotyledonous organism comprising a nucleic acid sequence according to the invention which contains a mutation which brings about a reduction in the activity of one of the proteins encoded by the nucleic acid molecules according to the invention in the organisms or parts thereof.
  • the mutation relates to one or more amino acid residues that are labeled conserved or highly conserved in the consensus sequence shown in the figures.
  • a further subject of the invention therefore relates to transgenic plants transformed with at least
  • nucleic acid molecules according to SEQ ID No: 1, 3, 5, 7, 9, 1 1, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37 , 39, 41, or 43, contain the nucleic acid sequences complementary thereto, and those for functional equivalents of the polypeptides according to SEQ ID No: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 60, 61 or 62 encoding nucleic acid molecules
  • dsRNA molecule double-stranded RNA nucleic acid molecules
  • dsRNA molecule double-stranded RNA nucleic acid molecules
  • the sense strand of said dsRNA molecule at least a homology of 30%, preferably at least 40%, 50%, 60 %, 70% or 80%, more preferably at least 90%, most preferably 100% to a nucleic acid molecule according to S SEQ ID No: 1, 3, 5, 7, 9, 1 1, 13, 15, 17 , 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43, or a fragment of at least 17 base pairs, preferably at least 18, 19, 20, 21, 22, 23 , 24, 25, 26, 27, 28, 29 or 30 base pairs, more preferably at least 40, 50, 60, 70, 80 or 90 base pairs, most preferably at least 100, 200, 300 or 400
  • Base pairs most preferably at least 500, 600, 700, 800, 900 or more base pairs comprising at least a 50%, 60%, 70% or 80%, particularly preferably at least 90%, very particularly preferably 100% homology to a nucleic acid molecule according to SEQ ID No: 1, 3, 5, 7, 9, 1 1, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43,
  • transgenic expression cassette which comprises one of the nucleic acid sequences according to the invention, or a vector according to the invention, and also cells, cell cultures, tissues, parts, such as leaves, roots, etc. in the case of plant organisms, or propagation material derived from such organisms,
  • nucleic acid molecules do not have the structure shown in SEQ ID No: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, or 43, and in one embodiment does not consist of the nucleic acid molecules shown in SEQ ID Nos: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 , 30, 32, 34, 36, 38, 40, 42, 44, 60, 61 or 62 are polypeptide molecules and
  • the plant according to the invention or the plant used according to the invention is not Arabidopsis thaliana.
  • transgenic organisms are preferred as “transgenic organisms.”
  • the transgenic organism is a mature plant, seed, shoot, and seedling, as well as derived parts, propagation material, and cultures, for example “Mature plant” means plants at any stage of development beyond the seedling.
  • the plant is a monocotyledonous plant such as wheat, oats, millet, barley, rye, corn, rice, buckwheat, sorghum, triticale, spelled or sugarcane, in particular selected from the species Hordeum vulgare (barley), Triticum aestivum (wheat), Triticum aestivum subsp.spelta (spelled ), Triticale, Avena sative (oats), Seeale cereale (rye), Sorghum bicolor (millet), Zea mays (corn), Saccharum officinarum (sugar cane) or Oryza sativa (rice).
  • a monocotyledonous plant such as wheat, oats, millet, barley, rye, corn, rice, buckwheat, sorghum, triticale, spelled or sugarcane, in particular selected from the species Hordeum vulgare (barley), Triticum aestivum
  • the production of the transgenic organisms can be accomplished by the above-described methods of transforming or transfecting organisms.
  • the invention further relates to the transgenic plants described according to the invention, which additionally have increased Bax inhibitor 1 activity; plants which have increased Bax inhibitor 1 activity in mesophyll cells or root cells are preferred, and transgenic plants are particularly preferred belong to the family of Poaceae and increased Bax inhibitor 1 activity in mesophyll cells or root cells, most preferably transgenic plants selected from the plant genera Hordeum, Avena, Seeale, Triticum, Sorghum, Zea, Saccharum and Oryza, most preferably the plant species are Hordeum vulgaris (barley), Triticum aestivum (wheat), Triticum aestivum subsp.spelta (spelled), triticale, Avena sative (oats), Seeale cereale (rye), Sorghum bicolor (millet), Zea mays (corn), Saccharum officinarum (sugarcane) and Oryza sative (rice).
  • transgenic plants selected from the plant genera Hordeum, Avena
  • Another object of the invention relates to the use of the inventive, transgenic organisms and derived from them cells, cell cultures, parts - such as transgenic plant organisms roots, leaves, etc.-, and transgenic propagation material such as seeds or fruits, for the production of food or feed, pharmaceuticals or fine chemicals.
  • the invention also relates to a process for the recombinant production of pharmaceuticals or fine chemicals in host organisms wherein a host organism or a part thereof is transformed with one of the above-described nucleic acid expression cassette molecules and this expression cassette contains one or more structural genes which are suitable for the desired fine chemical or catalyze the biosynthesis of the desired fine chemical, the transformed host organism is grown and the desired fine chemical is isolated from the culture medium.
  • This process is widely applicable to fine chemicals such as enzymes, vitamins, amino acids, sugars, fatty acids, natural and synthetic flavorings, flavorings and dyes. Particularly preferred is the production of tocopherols and tocotrienols and carotenoids.
  • the expression of a structural gene can also be effected or influenced independently of the execution of the method according to the invention or the use of the articles according to the invention.
  • SEQ ID NO: 60, 61, 63 consensus sequences of the polynucleotide SEQ ID NO. from 1st to 22nd
  • FIG. 1 (12 pages): Nucleic acid sequences of ARM1 from barley, rice, and Arabidopsis thaliana.
  • FIG. 2 (6 pages): polypeptide sequences of ARM1 from barley, rice, and Arabidopsis thaliana.
  • Figure 3 (20 pages): Sequence Comparison of ARM1 Protein Sequences Polypeptides from barley, rice, and Arabidopsis thaliana.
  • Figure 5 (2 pages): Consensus Sequences of Sequence Comparison of ARM1 Protein Sequences Polypeptides from barley, rice, and Arabidopsis thaliana. Examples:
  • oligonucleotides can be carried out, for example, in a known manner by the phosphoamidite method (Voet, Voet, 2nd edition, Wiley Press New York, pages 896-897).
  • the cloning steps carried out in the context of the present invention e.g. Restriction cleavage, agarose gel electrophoresis, purification of DNA fragments, transfer of nucleic acids to nitrocellulose and nylon membranes, linkage of DNA fragments, transformation of E. coli cells, culture of bacteria, propagation of phages and sequence analysis of recombinant DNA are performed as described in Sambrook et al , (1989) CoId Spring Harbor Laboratory Press; ISBN 0-87969-309-6 described.
  • the sequencing of recombinant DNA molecules is carried out using a laser fluorescence DNA sequencer from the company MWG-Licor according to the method of Sanger (Sanger et al. (1977) Proc Natl Acad. USA 74: 5463-5467).
  • the golden variety Golden Promise comes from Patrick Schweizer, Institute of Plant Genetics and Crop Plant Research Gatersleben.
  • the variety Pallas and the backcrossed line BCIngrid- / 77 / ⁇ 5 were provided by Lisa Munk, Department of Plant Pathology, Royal Veterinary and Agricultural University, Copenhagen, Denmark. Their preparation has been described (Kistl P et al. (1986) crop 269: 903-907).
  • the seeds pre-germinated for 12 to 36 h in the dark on moist filter paper are laid out with 5 seeds each on the edge of a square pot (8x8cm) in type P spring soil, covered with soil and poured regularly with tap water. All plants are grown in climatic cabinets or chambers at 16 to 18 ° C, 50 to 60% relative humidity and a 16-hour light / 8-hour dark cycle with 3000 and 5000 lux (50 and 60 ⁇ mols- 1 m- 2 photons, respectively ) - flux density) cultivated for 5 to 8 days and used in the seedling stage in the experiments. In experiments where primary leaf applications are performed, they are fully developed.
  • the plants are cultivated in climatic cabinets or chambers at daytime 24 ° C, at night 20 ° C, 50 to 60% relative humidity and a 16 hours light / ⁇ stußen dark cycle with 30000 lux.
  • barley powdery mildew Blumeria graminis DC
  • Speer f.sp. hordeiEm Marchai of breed A6 (Wiberg A (1974) Hereditas 77: 89-148) (BghA6). This was provided by the Institute of Biometry, JLU G devisen.
  • Offspring of the inoculum are grown in climatic chambers at the same conditions described above for the plants by transferring the conidia of infested plant material to regularly grown 7-day-old barley plants cv. Golden Promise at a density of 100 conidia / mm 2 .
  • Inoculation with BghA6 is done using 7 day old seedlings by shaking the conidia of already infested plants in an inoculation tower at approximately 100 conidia / mm 2 (unless otherwise stated).
  • RNA Extraction Buffer AGS, Heidelberg, Germany
  • central primary leaf segments of 5 cm in length are harvested and homogenized in liquid nitrogen in mortars.
  • the homogenate is stored at -70 ° C until RNA extraction.
  • RNA extraction kit (AGS, Heidelberg). For this purpose, 200 mg of the frozen leaf material in a microcentrifuge tube (2 mL) is covered with 1.7 mL RNA extraction buffer (AGS) and immediately mixed thoroughly. After addition of 200 .mu.l of chloroform is mixed well again and shaken at room temperature for 45 min on a horizontal shaker at 200 U / min. The mixture is then centrifuged for 15 minutes at 20000 g and 4 ° C for phase separation, transferred the upper aqueous phase in a new microcentrifuge tube and the lower discarded.
  • AGS RNA extraction kit
  • the aqueous phase is again cleaned with 900 .mu.l of chloroform by homogenizing 3 times for 10 sec and centrifuging again (see above) and lifting off.
  • 850 ⁇ l of 2-propanol are then added, homogenized and placed on ice for 30 to 60 minutes. Centrifuge for 20 min (see above), carefully decant the supernatant, add 2 mL 70% ethanol (-20 ° C), mix and centrifuge again for 10 min. The supernatant is then decanted again and the pelet carefully freed with a pipette of liquid residues before it is dried at a clean air workplace in the clean air stream.
  • RNA is then dissolved in 50 ⁇ L DEPC water on ice, mixed and centrifuged for 5 min (see above). 40 ⁇ l of the supernatant are transferred as RNA solution to a new microcentrifuge tube and stored at -70 ° C.
  • RNA concentration is determined photometrically.
  • the concentrations of the RNA solutions are then adjusted with DEPC water to 1 ⁇ g / ⁇ L and checked in the agarose gel.
  • RNA concentrations in the horizontal agarose gel 1% agarose in 1 ⁇ MOPS buffer with 0.2 ⁇ g / mL ethidium bromide
  • 1 ⁇ l of RNA solution with 1 ⁇ L 10 ⁇ MOPS, 1 ⁇ l color marker and 7 ⁇ l DEPC water shifted according to their size at 120 V voltage in the gel in 1 x MOPS running buffer over 1, 5 h separated and photographed under UV light. Any concentration differences of the RNA extracts would be compensated with DEPC water and the adjustment again checked in the gel.
  • RNA from barley epidermis was used as template.
  • the RNA was isolated from epidermal cells of barley Ingrid + Bgt at 12 h and 24 h after infection.
  • the cDNA sequence of HvArm was extended by RACE technology using the GeneRacer Kit (INVITROGENE Life Technologies). For this purpose, 4000 ng total mRNA, 1 ⁇ L 10xCIP buffer, 10 units RNAse inhibitor, 10 units CIP ("calf intestinal phosphatase") and DEPC-treated water were treated up to a total volume of 10 ⁇ L for 1 h at 50 ° C. , To precipitate the RNA, a further 90 .mu.l of DEPC-water and 100 .mu.l of phenochloroform were added and thoroughly mixed for about 30 sec.
  • RNA CAP structures were removed by adding 1 ⁇ l of 1OxTAP buffer, 10 units of RNAsin and 1 unit of tobacco acid pyrophosphatase (TAP). The mixture was incubated for 1 h at 37 ° C and then cooled on ice. The RNA was again precipitated as described above and transferred to a reaction vessel containing 0.25 ⁇ g GeneRacer oligonucleotide primer. The oligonucleotide primer was resuspended in the RNA solution, the mixture incubated for 5 min at 70 ° C and then cooled on ice.
  • the reaction was incubated at 50 ° C for 50 minutes.
  • GR 5 ' primer (Invitrogen): 5 ' cgactggagcacgaggacactga 3 ' (Seq ID No .: 47)
  • the batch (total volume 50 ⁇ l) had the following composition:
  • the PCR gave a product of about 850bp.
  • the resulting PCR product was isolated on a 1% agarose gel, extracted from the gel and cloned into pCR4-Topo (Invitrogen Life Technologies) by T-overhang ligation and sequenced.
  • the sequence represented by SEQ ID NO: 1 is thus identical to the armadillo sequence of barley.
  • the batch (total volume 50 ⁇ l) had the following composition:
  • PCR revealed a product of 1326bp.
  • the resulting PCR product was isolated on a 1% agarose gel, extracted from the gel and placed in pCR4-Topo (Invitrogen Life Technologies) using T-overhang ligation and sequenced.
  • the sequence represented by SEQ ID NO: 1 is thus identical to the armadillo sequence of barley.
  • the batch (total volume 50 ⁇ l) had the following composition (the gene was divided into two parts for the PCR because of its size of 2775 bp):
  • the PCR gives a product of 1143bp and 1705bp, respectively.
  • the resulting PCR product is isolated on a 1% agarose gel, extracted from the gel and cloned into pCR4-Topo (Invitrogen Life Technologies) by T-overhang ligation and sequenced.
  • the sequence represented by SEQ ID NO: 1 is therefore identical to the Arabidopsis thaliana Armadillo sequence.
  • the 1705bp PCR product is cloned into pUC18. This is followed by the cloning of AtArm 1 143bp into pUC18 AtArm 1705bp.
  • an antsense construct is generated.
  • HvArm antisense is cloned into the binary vector 1 bxSuperGus by excision of HvArm via Smal from pUC18 and cloned via the mentioned interfaces into the 1 bxSuperGus (SacI / SmaI) blunted at the 5 ' end.
  • the orientation is checked by means of test digestion.
  • NILs Barley near-isogenic lines of the cultivars cv Ingrid (MIo) and Ingrid BC 7 m / o ⁇ illustrated. Barley cv Golden Promise were grown in climatic chambers in pots of compost soil (IPK Gatersleben) (16 h light from metal halide lamps, 8 h dark, 70% relative humidity, 18 ° C constant temperature).
  • Blumeria graminis DC Speer f.sp. hordei (BgIi) isolates 4.8 containing AvrMla ⁇ was light transfected at 22 ° C and 16 h by weekly transfer to fresh barley leaves of the cultivar cv. Golden Promise cultivated.
  • the vector plPKTA38 was used as an entry vector for the Gateway TM cloning system (invitrogen).
  • the vector is a pENTRI a derivative in which the ccdB gene has been deleted and a novel multiple cloning site has been inserted.
  • the destination vector used was plPKTA30N, which is based on a pUC18 background and contains a costitive promoter, terminator and two gateway cassettes containing attR sites, ccdB gene and a chloramphenicol resistance gene. The two cassettes are arranged in reversed orientation and separated by a spacer of the wheat RGA2 gene (accession number AF326781). This vector system allows a single-step transfer of two copies of a PCR
  • PCR and primer design EST sequences of the target gene were amplified by PCR.
  • Purified DNA of the selected cDNA clones was used as a template for the PCR reaction.
  • the primers were derived using the software package "Primer3" in batch-file mode using the 5 'EST sequences Typically, the EST sequences were amplified with a universal forward primer and a reverse EST-specific primer.
  • the amplified product had a size of 400-700 bp.
  • the primers were 20-22 bp in length and had a T m of about 65 ° C.
  • PCR reactions were performed in 96-well microtiter plates using a DNA polymerase which produces blunt ends (ThermalAce; Invitrogen)
  • the PCR products were purified using the MinElute UF kit (Qiagen, Hilden, Germany) and eluted with 25 ⁇ l of water.
  • the PCR fragments were cloned into the Swal site of the vector plPKTA38.
  • the ligation was at 25 ° C in the presence of N U T4 DNA ligase (MBI Fermentas) and 5 U Swa ⁇ reaction.
  • MBI Fermentas N U T4 DNA ligase
  • the buffer was supplemented with NaCl to a final concentration of 0.05M. After 1 h, the reaction was stopped by heating to 65 ° C for 15 min. An additional 5 U of Swa I was then added to suppress re-ligation of the plasmid.
  • the Swa I buffer was supplemented with additional NaCl to a final concentration of 0.1M. Reaction enemas were further incubated for 1 h at 25 ° C.
  • the resulting recombinant plPKTA38-EST clones were used for the transformation of chemically competent E.c ⁇ // DH10B cells into 96-well PCR microtiter plates (5 ⁇ l Ligation Set on 20 ⁇ l competent cells) and incubated on LB agar plates with cannula. mycin plated. One colony of each cloning reaction was picked and taken up in 1.2 mL of LB + kanamycin liquid culture, distributed in 96-deep-well plates. The plates were covered with an air-permeable film and incubated at 37 ° C for 18 h on a shaker.
  • the deep-well plates were then at 750 g for 10 min centrifuged and the pellets were used for plasmid isolation using NucleoSpin Robot-96 Plasmid Kit (Macherey-Nagel).
  • the presence of the plPKTA38 plasmid was detected by restriction digestion with EccR ⁇ .
  • the positive plPKTA38 clones were used as donor vector in the LR reaction.
  • EST fragments in pIPKTA38 were cloned into the RNAi destination vector plPKTA30N as inverted repeats via a single LR recombination reaction.
  • the reaction volume was reduced to 6 ⁇ l and contained 1 ⁇ l of the plPKTA38 donor clone, 1 ⁇ l of the plPKTA30N Destination vector (150 ng / ⁇ L), 0.8 ⁇ l of the LR Clonase Enzyme Mix and 3.2 ⁇ l of H2O.
  • the reaction was incubated at room temperature overnight, and 5 ⁇ L of it was transformed into 20 ⁇ L of chemically competent E.coliZe ⁇ in 96-well PCR plates.
  • Two 96-deep-well plates with LB + ampicillin were half filled with half volume transformation approach, sealed with an air-permeable film and incubated at 37 ° C for 24 h on a plate shaker. Subsequently, the deep-well plates were centrifuged at 750 g for 10 min and the pellets of two duplicates of each clone were pooled and subjected to the Plasmind preparation. This was done using the NucleoSpin Robot-96 Plasmid Kit (Macherey-Nagel). The amount of DNA averaged 20-30 ⁇ g of DNA per clone.
  • the stock solution contained 25 mg mL -1 gold, the supernatant was completely removed after coating, and the particles were resuspended in 30 ⁇ l pure ethanol 2.18 mg gold microcarriers were used per bombardment Four hours after bombardment the leaf segments were opened 1% w / v Phytoagar (Ducheva) in water containing 20 ppm benzimidazole, stored in 20 x 20 cm plates and fixed at both ends with weights.
  • the leaf segments were inoculated with Sporenb from Bgt and Bgh 48 h or 96 h after particle bombardment.
  • the reporter construct for transformed epidermal cells was the plasmid pUbiGUS, which contains the ⁇ -glucuronidase (GUS) gene under the control of the maize ubiquitin promoter.
  • the leaf segments were stained for GUS activity 40 h after inoculation and decolorized with 7.5% w / v trichloroacetic acid and 50% methanol for 5 minutes.
  • the GUS staining solution is described in Schweizer et al. Described in 1999.
  • GUS-stained cells were counted by light microscopy and the number of haustoria in these transformed cells was determined, from which the haustorial index was derived. Alternatively, the number of GUS stained cells containing at least one haustorium was determined and from this the Susceptibility Index was calculated.

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Abstract

La présente invention concerne un procédé pour donner à des végétaux une résistance aux agents pathogènes ou augmenter cette résistance chez des végétaux, en limitant l'expression d'au moins un polypeptide à répétitions armadillo ou d'un équivalent fonctionnel de celui-ci. L'invention concerne des séquences d'acide nucléique qui codent pour un polynucléotide à répétitions armadillo Hordeum vulgare (HvARM) et des séquences homologues (ARM1) de celui-ci, ainsi que leur utilisation dans le procédé pour donner à des végétaux une résistance aux agents pathogènes, des acides nucléiques hybrides, des cassettes d'expression et des vecteurs qui comprennent ces séquences, et qui conviennent pour donner à des végétaux une résistance aux champignons. L'invention a également pour objet des organismes transgéniques modifiés avec ces cassettes d'expression ou vecteurs, en particulier des végétaux, des cultures dérivées de ceux-ci, des parties ou des agents de multiplication transgéniques.
EP06819167A 2005-11-08 2006-10-27 Utilisation de polynucleotides a repetition armadillo (arm1) pour obtenir une resistance elevees aux agents pathogenes chez des vegetaux Withdrawn EP1948806A2 (fr)

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EP05110468 2005-11-08
EP06819167A EP1948806A2 (fr) 2005-11-08 2006-10-27 Utilisation de polynucleotides a repetition armadillo (arm1) pour obtenir une resistance elevees aux agents pathogenes chez des vegetaux
PCT/EP2006/067865 WO2007054441A2 (fr) 2005-11-08 2006-10-27 Utilisation de polynucleotides a repetition armadillo (arm1) pour obtenir une resistance elevees aux agents pathogenes chez des vegetaux

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CA2628505A1 (fr) * 2005-11-08 2007-05-18 Basf Plant Science Gmbh Utilisation de polynucleotides a repetition armadillo (arm1) pour obtenir une resistance elevees aux agents pathogenes chez des vegetaux
US8329988B2 (en) * 2006-10-12 2012-12-11 Basf Plant Science Gmbh Method for increasing pathogen resistance in transgenic plants
GB201818715D0 (en) 2018-11-16 2019-01-02 British American Tobacco Investments Ltd Method
CN117947055B (zh) * 2024-03-27 2024-07-16 西北农林科技大学深圳研究院 一种小麦条锈菌效应蛋白及其应用

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US8735654B2 (en) 2014-05-27
AU2006311089C1 (en) 2012-11-08
AU2006311089A1 (en) 2007-05-18
CA2628505A1 (fr) 2007-05-18
WO2007054441A3 (fr) 2007-07-26
US20090241215A1 (en) 2009-09-24
US8362323B2 (en) 2013-01-29
AU2006311089B2 (en) 2012-06-07
US20130104260A1 (en) 2013-04-25
AR056782A1 (es) 2007-10-24

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