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WO1992018613A1 - Micro-organismes antifongiques - Google Patents

Micro-organismes antifongiques Download PDF

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Publication number
WO1992018613A1
WO1992018613A1 PCT/GB1992/000597 GB9200597W WO9218613A1 WO 1992018613 A1 WO1992018613 A1 WO 1992018613A1 GB 9200597 W GB9200597 W GB 9200597W WO 9218613 A1 WO9218613 A1 WO 9218613A1
Authority
WO
WIPO (PCT)
Prior art keywords
antifungal agent
plant
antifungal
ncib
fungus
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.)
Ceased
Application number
PCT/GB1992/000597
Other languages
English (en)
Inventor
Annabel Renwick
Keith Adrian Powell
Richard Campbell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to CS932106A priority Critical patent/CZ280653B6/cs
Priority to AU15315/92A priority patent/AU656369B2/en
Priority to JP4507168A priority patent/JPH06506345A/ja
Priority to RU93058396A priority patent/RU2104645C1/ru
Priority to FI934441A priority patent/FI934441L/fi
Publication of WO1992018613A1 publication Critical patent/WO1992018613A1/fr
Priority to BG98144A priority patent/BG61654B1/bg
Priority to NO1993933623A priority patent/NO933623D0/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20—Bacteria; Culture media therefor
    • C12N1/205—Bacterial isolates
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
    • A01N63/27—Pseudomonas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
    • C12R2001/00—Microorganisms ; Processes using microorganisms
    • C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
    • C12R2001/38—Pseudomonas
    • C12R2001/39—Pseudomonas fluorescens

Definitions

  • This invention relates to an agricultural plant protection product. More specifically, the invention relates to an antifungal micro-organism, in particular to a novel strain of Pseudomonas fluorescens, and the uses thereof for the protection of plants against fungal attack.
  • Certain strains of the micro-organism Pseudomonas fluorescens are known to be useful agricultural fungicides.
  • the antifungal activity varies greatly amongst the innumerable strains of the micro-organism.
  • Agriculturally useful strains are those which possess useful levels of activity against specific target fungi.
  • One such target is the group of fungi which are associated with the disease known as "damping-off" which is particularly troublesome in certain crops and under particular climatic conditions.
  • Use of Biological Control Agents (BCAs) or biopesticides to control disease may be more effective or more preferable to the use of standard chemical control agents.
  • An object of the present invention is to provide an agriculturally useful fungicide.
  • the invention also comprises an antifungal agricultural composition containing Pseudomonas fluorescens Biovar I, strain NCIB 40189 as active ingredient in admixture with a carrier composition acceptable in agricultural practice.
  • a carrier composition acceptable in agricultural practice examples of the types of agricultural formulations which may be employed are seed coatings compositions, liquid for root or soil drenching and granular or powder compositions. The base materials for these are well known in the art.
  • the invention provides a method of protecting crop plants from fungal infection comprising applying to the plants, the roots or seeds thereof or the growing medium for the plant a fungicidally effective dosage of the said Pseudomonas fluorescens Biovar I, strain NCIB 40189.
  • the treatment may be effected by application of a preparation containing organisms of the strain of this invention.
  • the antifungal micro-organism of this invention is particularly effective against fungal infections associated with "damping-off" disease, such as fungi of the genera Rhizoctonia, Pythium, Fusarium. It is also active against
  • Gaeumannomyces graminis which causes take-all disease.
  • the strain of this invention (NCIB 40189) was isolated from volunteer wheat roots collected from plants grown at Chiseldon, Swindon, Wiltshire,
  • the bacterium was isolated from volunteer wheat roots dug from a field at a farm known as Draycott Farm, Chiseldon, Swindon, Wiltshire, United Kingdom.
  • the roots were washed to remove all adhering soil and placed in sterile distilled water in a flask containing glass beads.
  • the roots were shaken with the glass beads for 15 minutes and the washings then plated out on to Kings B agar (Proteose Peptone No.3, 20g; glycerol 10ml; potassium sulphate, 1.5g; magnesium sulphate heptahydrate, 1.5g; technical agar, 12g; and, one litre of distilled water at pH 7.2 and including cycloheximide 75 micrograms/ml; chloromycetin 12.5 micrograms/ml; and ampicillin 50 micrograms/ml) at 10:1 and 10:3 dilutions.
  • the plates were incubated for three days at 20 ⁇ C.
  • the bacterium was taken at random from the agar plate and sub-cultured on to 1/10 tryptic soya broth agar (TSA) (3g tryptic soya broth; 15g agar; one litre water). The bacterium was maintained an 1/10 TSA and stored at 4°C until required.
  • TSA tryptic soya broth agar
  • Phenylalanine deaminase - Growth factor required
  • Pseudomonas fluorescens strain NCIB 40189 was tested for activity against Pythium ultimum, using a petri-dish soil screen.
  • Petri-dishes (5cm) were filled with 10ml of potato dextrose agar (PDA).
  • Minster Mendip Loam was autoclaved at 120°C for 60 minutes. To this sterile wheatgerm was added (1% w/w) and mixed well. Approximately 8g of soil was placed into each Petri dish to cover the Pythium lawn.
  • strain NCIB 40189 inhibited fungal growth in the soil. Its activity is comparable to Metalaxyl, a standard chemical fungicide.
  • strain NCIB 40189 The effectiveness of Pseudomonas fluorescens strain NCIB 40189 was further tested against Pythium ultimum and Rhizoctonia solani. Results show that strain NCIB 40189 has activity against P ultimum and R solani under glasshouse conditions.
  • Tests were carried out in pots (3 inches diameter), filled to 3/4 with infested soil. Five peas were sown in each pot and covered with clean soil.
  • strain NCIB 40189 results for strain NCIB 40189 and for the untreated control show that application of the Pseudomonas fluorescens strain allows significantly more pea plants to emerge. Activity of strain NCIB 40189 is comparable with that of the chemical fungicide Metalaxyl at the disease levels expressed.
  • Tests were carried out in pots (3 inches diameter), filled to 3/4 with infested soil. Five peas were sown in each pot and covered with clean soil.
  • HEALTHY CONTROL 1/10 TSB alone on soil not infested with Rhizoctonia. Five replicates were prepared for each treatment.
  • strain NCIB 40189 allows significantly more pea plants to emerge when compared to the diseased control. In fact, application of strain NCIB 40189 allows pea establishment at a level comparable to the healthy control (treatment without R solani) . Activity of the BCA also appears to be higher than that of the chemical fungicide Monceren.
  • Pseudomonas fluorescens strain NCIB 40189 was further tested for its activity against Rhizoctonia solani and its ability to protect pea plants from disease.
  • the trial was carried out in rectangular trays (165mm x 95mm), half-filled with infested soil (prepared according to the method described in the previous section). Twenty-five peas were sown in each tray and covered with clean soil.
  • strain NCIB 40189 significantly increased the percentage emergence of the plants when compared to the untreated control. There is no statistically significant difference between results obtained with the drench or granule BCA treatments.
  • strain NCIB 40189 was used in field trials as a biological control agent (BCA) against "damping-off" disease in peas and maize. Field trials of strain NCIB 40189 have been conducted on its potential for inhibiting Pythium and Fusarium spp. Results were compared to standard chemical treatments, and are reported below. In summary, these results show that disease caused by Pythium ultimum or Fusarium solani is reduced by application of strain NCIB 40189 to a level comparable with that obtained by standard chemical treatment. EFFICACY AGAINST PYTHIUM:
  • Strain NCIB 40189 was applied as a gum/peat formulation (10 cell/seed).
  • APRON Trade Mark
  • Two types of plant control were used: untreated pea seed, and blank pea seed (which had undergone seed treatment without addition of BCA or chemical).
  • the first column in Table 6 shows results for the control experiment where tests were conducted in normal field soil, without any added pathogen. The absence of pathogen in the soil allowed normal plant growth. There is no real significant difference between treatments, indicating the addition of strain NCIB 40189 had no phytotoxic effect.
  • the other figures in Table 6 give the results for two test treatments at different pathogen rates. The presence of pathogen in the soil decreased the number of plants emerging from untreated or blank seed when compared to the control experiment. This shows disease was present and was adversely affecting plant growth. However, the presence of strain NCIB 40189 significantly increases the number of plants emerging in the presence of the pathogen. EFFICACY AGAINST FUSARIUM:
  • Pathogen _ solani
  • Strain NCIB 40189 was applied as a gum/peat formulation (10 cell/seed).
  • the chemical control was CAPTAN (Trade Mark), used as a seed treatment at the recommended rate. Untreated seed was used as the plant control.
  • Results are shown in Table 7 below. Emergence is quoted as percentage (%) of plants 15 days after sowing. The letters appearing after the percentage emerged indicate statistical significance. There is no significant difference at the 5% probability level between entries with a letter in common.
  • the first column of Table 7 shows results for the control trials where no test pathogen was added.
  • the absence of pathogen in the soil allowed normal plant growth.
  • the presence of pathogen, Fusarium solani, in the soil decreased the number of plants emerging from untreated seed when compared to the control experiment. This shows disease was present and was adversely affecting plant growth.
  • the presence of strain NCIB 40189 significantly increases the percentage of plants emerging in the presence of the pathogen.
  • treatment with strain NCIB 40189 improved plant performance so that the percentage emerging was not significantly different from the percentage emerging in the absence of pathogen.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Virology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • Microbiology (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Plant Pathology (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Biochemistry (AREA)
  • Dentistry (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

On a isolé une nouvelle souche de Pseudomonas fluorescens qui présente une activité fongicide sur un large éventail de mycoses. On fournit les résultants de criblage, d'analyses et d'essais pratiques. L'agent fongicide est particulièrement actif contre la maladie de fonte des semis provoquée par des champignons de genres tels que Rhizoctonia, Pythium, Fusarium. On décrit des méthodes d'utilisation de tels micro-organismes et de compositions fongicides contenant ceux-ci pour protéger des plantes agricoles des mycoses. L'agent antifongique peut être utilisé comme fongicide agricole, en particulier comme enrobage de semences.
PCT/GB1992/000597 1991-04-11 1992-04-03 Micro-organismes antifongiques Ceased WO1992018613A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CS932106A CZ280653B6 (cs) 1991-04-11 1992-04-03 Antifungální prostředek
AU15315/92A AU656369B2 (en) 1991-04-11 1992-04-03 Antifungal micro-organism
JP4507168A JPH06506345A (ja) 1991-04-11 1992-04-03 殺菌性の微生物
RU93058396A RU2104645C1 (ru) 1991-04-11 1992-04-03 Противогрибковое средство, противогрибковая сельскохозяйственная композиция, способ подавления грибкового поражения растений
FI934441A FI934441L (fi) 1991-04-11 1992-04-03 Antifungal mikroorganism
BG98144A BG61654B1 (bg) 1991-04-11 1993-10-07 Противогъбен микроорганизъм
NO1993933623A NO933623D0 (no) 1991-04-11 1993-10-08 Fungicid mikroorganisme

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9107678.6 1991-04-11
GB919107678A GB9107678D0 (en) 1991-04-11 1991-04-11 Antifungal micro-organism

Publications (1)

Publication Number Publication Date
WO1992018613A1 true WO1992018613A1 (fr) 1992-10-29

Family

ID=10693067

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000597 Ceased WO1992018613A1 (fr) 1991-04-11 1992-04-03 Micro-organismes antifongiques

Country Status (13)

Country Link
EP (1) EP0579635A1 (fr)
JP (1) JPH06506345A (fr)
AU (1) AU656369B2 (fr)
BG (1) BG61654B1 (fr)
CA (1) CA2107098A1 (fr)
CZ (1) CZ280653B6 (fr)
FI (1) FI934441L (fr)
GB (1) GB9107678D0 (fr)
HU (1) HUT67770A (fr)
NO (1) NO933623D0 (fr)
NZ (1) NZ242291A (fr)
RU (1) RU2104645C1 (fr)
WO (1) WO1992018613A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019602A1 (fr) * 1992-04-03 1993-10-14 Zeneca Limited Methode pour combattre les maladies fongiques
US5811090A (en) * 1994-01-31 1998-09-22 Kemira Agro Oy Microorganisms for biological control of fungal infections and pests of plants
US5833977A (en) * 1994-07-14 1998-11-10 Oy Lahden Polttimo Ab Method of improving the quality of plant seeds using lactic acid producing micro-organisms
EP1021954A1 (fr) * 1998-12-24 2000-07-26 Gabriele Dr. Berg Isolats de rhizobactéries pour utilisation contre les champingnon phytopathogénes du sol et méthodes pour leur utilisation
RU2154943C2 (ru) * 1994-01-24 2000-08-27 АграСол Инк. Штамм pseudomonas fluorescens, предназначенный для борьбы с фитопатогенными грибами (варианты), способ его выделения и применения, композиция, содержащая данный штамм и способ ее применения
US6599503B2 (en) 2000-12-08 2003-07-29 Empresa Brasileira De Pesquisa Agropecuaria - Embrapa Biocontrol of plant diseases caused by Fusarium species with novel isolates of Bacillus megaterium
EP2236037A1 (fr) * 2009-03-30 2010-10-06 Technische Universität Graz Préparation fongicide
EP2233458A3 (fr) * 2001-08-13 2011-02-23 Agro.Bio Hungary Kft. Microorganismes pour le traitement du sol et un procédé de leur obtention
RU2840035C1 (ru) * 2024-10-02 2025-05-15 федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" Способ борьбы с септориозом в посевах озимой пшеницы биофунгицидными препаратами

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2170510C2 (ru) * 1999-07-01 2001-07-20 Совхоз "Тепличный" Способ получения биологического препарата "экофит" для защиты растений от фитопатогенов и повышения урожая
RU2205542C1 (ru) * 2001-09-26 2003-06-10 Всероссийский научно-исследовательский институт биологической защиты растений Способ обработки растений и используемая в нем композиция для защиты растений
RU2305927C2 (ru) * 2005-06-09 2007-09-20 Федеральное государственное научное учреждение "Всероссийский научно-исследовательский институт защиты растений" Способ защиты растений
MD508Z (ro) * 2012-01-06 2012-12-31 Институт Генетики, Физиологии И Защиты Растений Академии Наук Молдовы Procedeu de tratare a seminţelor de viţă-de-vie înainte de semănat
EP3099172B1 (fr) * 2014-01-31 2021-08-25 Agbiome, Inc. Agent de lutte biologique modifié et ses utilisations
US9877486B2 (en) 2014-01-31 2018-01-30 AgBiome, Inc. Methods of growing plants using modified biological control agents

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106504A2 (fr) * 1982-09-08 1984-04-25 THE UNITED STATES OF AMERICA as represented by the Secretary United States Department of Commerce Méthode de sélection de bactéries et utilisation de celles-ci dans la lutte sur les lieux contre les maladies causées par Gaeumannomyces graminis
US4647533A (en) * 1984-09-14 1987-03-03 The United States Of America As Represented By The Secretary Of Agriculture Method for screening bacteria and application thereof for field control of Pythium spp. on small grain crops
EP0353689A2 (fr) * 1988-08-02 1990-02-07 RAMOT UNIVERSITY, AUTHORITY FOR APPLIED RESEARCH & INDUSTRIAL DEVELOPMENT LTD. Procédé pour lutter contre les maladies foliaires causées par des champignons pathogènes avec des bactéries fongicides et cultures pures de bactéries fongicides
EP0376775A1 (fr) * 1988-12-19 1990-07-04 Pioneer Hi-Bred International, Inc. Lutte biologique contre la poursuite de blé de semence et de semis

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI821099A0 (fi) * 1982-03-30 1982-03-30 Risto Tahvonen Fungistatiskt foerfarande

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106504A2 (fr) * 1982-09-08 1984-04-25 THE UNITED STATES OF AMERICA as represented by the Secretary United States Department of Commerce Méthode de sélection de bactéries et utilisation de celles-ci dans la lutte sur les lieux contre les maladies causées par Gaeumannomyces graminis
US4647533A (en) * 1984-09-14 1987-03-03 The United States Of America As Represented By The Secretary Of Agriculture Method for screening bacteria and application thereof for field control of Pythium spp. on small grain crops
EP0353689A2 (fr) * 1988-08-02 1990-02-07 RAMOT UNIVERSITY, AUTHORITY FOR APPLIED RESEARCH & INDUSTRIAL DEVELOPMENT LTD. Procédé pour lutter contre les maladies foliaires causées par des champignons pathogènes avec des bactéries fongicides et cultures pures de bactéries fongicides
EP0376775A1 (fr) * 1988-12-19 1990-07-04 Pioneer Hi-Bred International, Inc. Lutte biologique contre la poursuite de blé de semence et de semis

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 109, no. 17, 1988, Columbus, Ohio, US; abstract no. 144479E, J.S.DAHIYA: 'Control of rhizoctonia solani by pseudomonas fluoresces' *
CHEMICAL ABSTRACTS, vol. 1109, no. 7, 1988, Columbus, Ohio, US; abstract no. 51552H, P.G.BRISBANE: 'Mechanisms of inhibiton of gaeumannomyces graminis var. tritici by fluorescent pseudomonas' *
STN International, File Biosis, DN: 88:19429 STN AN: 89:294085, Kaiser W.J. et al. "Biological control of seed rot and preemergence of chickpea with fluorescent pseudomonas *
WORLD PATENTS INDEX LATEST Week 8837, 8 August 1988 Derwent Publications Ltd., London, GB; AN 88-261550 & JP,A,63 190 806 (SHUMIMOTO CHEM IND KK) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019602A1 (fr) * 1992-04-03 1993-10-14 Zeneca Limited Methode pour combattre les maladies fongiques
RU2154943C2 (ru) * 1994-01-24 2000-08-27 АграСол Инк. Штамм pseudomonas fluorescens, предназначенный для борьбы с фитопатогенными грибами (варианты), способ его выделения и применения, композиция, содержащая данный штамм и способ ее применения
US5811090A (en) * 1994-01-31 1998-09-22 Kemira Agro Oy Microorganisms for biological control of fungal infections and pests of plants
US5833977A (en) * 1994-07-14 1998-11-10 Oy Lahden Polttimo Ab Method of improving the quality of plant seeds using lactic acid producing micro-organisms
EP1021954A1 (fr) * 1998-12-24 2000-07-26 Gabriele Dr. Berg Isolats de rhizobactéries pour utilisation contre les champingnon phytopathogénes du sol et méthodes pour leur utilisation
US6599503B2 (en) 2000-12-08 2003-07-29 Empresa Brasileira De Pesquisa Agropecuaria - Embrapa Biocontrol of plant diseases caused by Fusarium species with novel isolates of Bacillus megaterium
US7118739B2 (en) 2000-12-08 2006-10-10 Empresa Brasileria De Pesquisa Agropecuaria - Embrapa Biocontrol of plant diseases caused by Fusarium species with novel isolates of Pantoea agglomerans
EP2233458A3 (fr) * 2001-08-13 2011-02-23 Agro.Bio Hungary Kft. Microorganismes pour le traitement du sol et un procédé de leur obtention
EP2236037A1 (fr) * 2009-03-30 2010-10-06 Technische Universität Graz Préparation fongicide
RU2840035C1 (ru) * 2024-10-02 2025-05-15 федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" Способ борьбы с септориозом в посевах озимой пшеницы биофунгицидными препаратами

Also Published As

Publication number Publication date
BG98144A (bg) 1994-06-30
RU2104645C1 (ru) 1998-02-20
AU656369B2 (en) 1995-02-02
FI934441A0 (fi) 1993-10-08
CZ280653B6 (cs) 1996-03-13
BG61654B1 (bg) 1998-02-27
NZ242291A (en) 1993-08-26
EP0579635A1 (fr) 1994-01-26
GB9107678D0 (en) 1991-05-29
AU1531592A (en) 1992-11-17
NO933623L (no) 1993-10-08
FI934441A7 (fi) 1993-10-08
FI934441L (fi) 1993-10-08
HUT67770A (en) 1995-04-28
CA2107098A1 (fr) 1992-10-12
JPH06506345A (ja) 1994-07-21
NO933623D0 (no) 1993-10-08
CZ210693A3 (en) 1994-04-13
HU9302694D0 (en) 1994-01-28

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