EP0160089A1 - Protection des plantes a l'aide de rhizobacteries - Google Patents

Protection des plantes a l'aide de rhizobacteries

Info

Publication number
EP0160089A1
EP0160089A1 EP84904239A EP84904239A EP0160089A1 EP 0160089 A1 EP0160089 A1 EP 0160089A1 EP 84904239 A EP84904239 A EP 84904239A EP 84904239 A EP84904239 A EP 84904239A EP 0160089 A1 EP0160089 A1 EP 0160089A1
Authority
EP
European Patent Office
Prior art keywords
seed
seedling
rhizobacteria
nematode
plant
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.)
Withdrawn
Application number
EP84904239A
Other languages
German (de)
English (en)
Other versions
EP0160089A4 (fr
Inventor
Seymour D. Van Gundy
Emma Zavaleta-Mejia
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.)
University of California
Original Assignee
University of California
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 University of California filed Critical University of California
Publication of EP0160089A1 publication Critical patent/EP0160089A1/fr
Publication of EP0160089A4 publication Critical patent/EP0160089A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/08—Immunising seed
    • 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
    • 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
    • A01N63/22—Bacillus
    • 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
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
    • C07K14/24—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Enterobacteriaceae (F), e.g. Citrobacter, Serratia, Proteus, Providencia, Morganella, Yersinia
    • 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
    • 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
    • C12R2001/425—Serratia
    • C12R2001/43—Serratia marcescens

Definitions

  • Zavaleta-Mejia and Van Gundy, Journal of Nematology (1982) 14.475A (Abstract) describes the effects of rhizobacteria on Meloidogyne infection.
  • the application of rhizobacteria to plants to inhibit the growth of harmful bacteria is known. See, e.g., Kloepper et al. (1981) Phytopathology 71:1020-1024; Kloepper et al. (1980) Nature 286:885-886; and Kloepper et al. (1980) Curr. Microb. 4:317-320.
  • Rhizobacteria are provided for protection against nematode and fungal infection.
  • Rhizobacteria which are selected as being antagonistic to growth of nematodes can be used to inoculate seeds and plant parts to provide the protection.
  • the rhizobacterial strains are not toxic to seed germination and are able to colonize the roots of the plant during and after germination.
  • the rhizobacteria may be applied to the rhizosphere in the presence of an assimilable nitrogen and carbon source.
  • Rhizobacterial strains are employed to inhibit nematode and fungal infection of susceptible plant hosts. Selected rhizobacterial strains are inoculated on the seed or seeding or in the soil at the time of planting, preferably in combination with a nitrogen nutrient source to promote initial colonization of the rhizosphere. Supplemental applications of the rhizobacteria may be performed from time to time, conveniently in conjunction with crop irrigation.
  • Bacteria suitable for use in the present invention are characterized by (1) their ability to inhabit the rhizosphere of the plaint host being treated, (2) lack of toxicity to the plant host and other beneficial soil microorganisms which inhabit the rhizosphere (e.g., nitrogen-fixing soil bacteria such as rhizobium), and (3) their ability to inhibit the infection of pathogenic nematodes, and (4) promote growth of the plant host.
  • Suitable rhizobacteria can be selected by screening a bacterial population indigenous to the plant host of interest for bacteria demonstrating nematocidal and fungicidal activity, as well as a lack of toxicity to seed germination.
  • Such screening may be accomplished by growth of isolated rhizobacterial strains in a nutrient medium, separation of the rhizobacteria from the nutrient medium and use of the nutrient medium (which may be supplemented with additional nutrients), as a nutrient strain for the rhizobacterial production and nematode toxins.
  • Reduced growth of the pest as compared to a control employing the same medium, except one that was not conditioned with the rhizobacteria, is indicative of nemastatic properties.
  • This screening technique may be used to identify nemastatic rhizobacteria from a variety of bacteria, including Serratia, such as Serratia marcescens, Pseudomonas, such as Pseudomonas fluorescens and Pseudomonas putida, Bacillus, such as Bacillus subtilis, and Actinomycetes.
  • Serratia such as Serratia marcescens
  • Pseudomonas such as Pseudomonas fluorescens and Pseudomonas putida
  • Bacillus such as Bacillus subtilis, and Actinomycetes.
  • the present invention may be used with virtually any plant which is subject to nematode and fungal infestation, particularly crop plants including both vegetables and fruits.
  • the rhizo ⁇ bacteria may be used to inhibit nematode and fungal infestation with such crops as sugar beet, beet, tomato, cucumber, cabbage, beans, soybeans,
  • Pests which may be controlled by the present invention include plant parasitic nematodes such as root knot nematodes and cyst nematodes.
  • Fungi which may be controlled include such fungus as Fusarium, Rhizoctonia, Pythium, Verticillium, and Phythophtora.
  • Treatment will involve introducing the selected rhizobacterial strain to the rhizosphere of the plant host to be protected, preferably at least as early as the time of planting.
  • the rhizobacterial strain may be applied to either a plant part or the soil, conveniently as a dispersion or suspension, inoculum, in powder or in granules, or the like, having a sufficient amount of the rhizobacteria and nutrient starter to provide protection.
  • the manner of application is not critical. However, the timing is critical.
  • the rhizobacterial strain must be active and growing when the plant roots enter the soil to provide early protection from nematode infection. Additional applications following planting through irrigation provide continuing protection.
  • Plant parts which may be treated include seeds, seedlings, plantlets, propagules, tuber portions or sections, and the like.
  • the plant part may be initially inoculated by dipping in or spraying with a suspension containing the bacterium, desirably at a concentration of at least
  • Bacterial concentration may be measured conveniently in a Spectronic 20 spectrometer at a wavelength of 600 nm.
  • the desired concentration corresponds to an absorption greater than about 3% light absorption, preferably greater than about 4% light absorption, more preferably about 4% to 12% light absorbance.
  • water may be used as the suspending agent, the suspending agent is preferably a nutrient starter broth. The plant seed can be dipped into the suspension, drained free of the suspension and allowed to dry before planting for germination.
  • the rhizobacteria may be used by themselves, they can conveniently be used in conjunc- tion with a chemical pesticide specific for the pest (but non-toxic to the rhizobacteria). Therefore, in addition to the use of the rhizobacteria, the plants ' may be exposed to a nematocide in accordance with the condition specified for such chemical pesticides.
  • a suitable nutrient source to enhance colon ⁇ ization of the soil by the rhizobacteria and promote the production of various substances toxic to nematodes and fungi, particularly gaseous and non-gaseous ammo ⁇ nia.
  • the nutrient source should include carbon and assimilable nitrogen, since many soils will be rela ⁇ tively nitrogen poor.
  • Suitable nutrient sources include organic sources having available amino groups, usually proteins and polypeptides such as peptones. Also suitable are various nutrient starter broths, such as Bacto Nutrient Broth from Difco. A particular peptone which has been found suitable is available from Sigma Chemical Co., St. Louis, Missouri, as Type 1 peptone (No. P7750).
  • Field testing A number of selected rhizo ⁇ bacteria strains were chosen for field testing. These cultures are given in Table 1 with growth stimulation and nematode indexes. Three fields were selected for testing. Field 9E was located on the Riverside Experi ⁇ ment Station and is infested with the sugar beet cyst nematode (Heterodera schachtii). Crops to be planted were cabbage and sugar beets both hosts to this nema ⁇ tode. The field was planted on April 29, 1982. The soil temperature was 20°C. The field was sprinkler irrigated twice a week. Soil texture was sandy loam. Field S.C.
  • the soil temperature was 22°C.
  • the field was irrigated by drip irrigation twice a week. Soil texture was sandy loam.
  • Field 4B was located on the Riverside Experiment Station and had previously been cropped to figs which were heavily infested with the root knot nematode, Meloidogyne incognita. Crops planted were sugar beet, tomato and cucumber. The field was planted on June 16, 1982. The soil temperature was 24°C. The field was irrigated by furrow irrigation. Soil texture was Hanford coarse sandy loam.
  • the germinated and inoculated seeds were planted in Speedling trays filled with a peat moss- vermiculite mix with pH adjusted to 6.7. After the seedlings were about 3 inches tall, they were removed to the lathhouse for hardening and inoculation. Two days before transplanting in the field, the individual trays were watered with their respective bacterial suspension prepared in deionized water to a 9% light absorbance on a Spectronic 20 spectrometer at 600 nm. The seedlings and root balls were transplated in the field using care to avoid contamination from one lot to the other. The fields received regular agricultural practices throughout the growing season.
  • the cabbages were harvested in three picks by removing solid heads and weighing. Cucumbers were harvested weekly for 3 harvests. Collected fruits were weighed. Tomatoes were harvested at one pick by weighing all fruit on the vine. Sugar beets were topped and beets weighed. Data was summarized on the basis of yield per plant. Roots were dug at final harvest and rated for root knot nematode galling using a standard index 0-5 with 5 being 100% galled. Soil samples were taken for analysis of dried cysts.
  • Table 1 Summatry of the results obtained from greenhouse ⁇ screening tests of the rhizobacteria chosen for 1982 field trials.
  • G.I. % increase or decrease in nematode root galling index of 0-5 where 5 is 100% of root system galled.
  • FWI % increase or decrease in fresh weight of total plant after 30 days.
  • Soil temperature 25-28°C.
  • Table 2 Summary of field trials of rhizobacteria on growth and nematode galling of tomatoes.
  • FWI % increase or decrease in yield of tomato fruit on a single pick.
  • G.I. % increase or decrease in nematode root galling index.
  • Table 3 Summary of field trial of rhizobacteria on growth and nematode galling of cucumbers.
  • FWI % increase or decrease in yield of cucumbers on a single pick.
  • G.I. % increase or decrease in nematode root galling index.
  • Table 4 Summary of field trials of rhizobacteria on growth of nematode galling of sugar beets.
  • FWI % increase or decrease in fresh weight of total plant after 30 days.
  • G.I. % increase or decrease in nematode root galling index.
  • Table 5 Incidence of root rot in sugar beets at South Coast Field Station.
  • NAI is not toxic to seed germination. Based on the above results, it was concluded that the culture NAI appears to be a promising rhizo- bacterium with both nemastatic and fungistatic prop ⁇ erties. NAI is representative of other rhizobacteria which may be used in place of NAI, where such bacteria have the same properties.
  • Petri dishes containing nutrient agar were flooded with distilled sterile water (as it was done with the plates containing the bacterium) , and after 30 min the water was removed from the plates and used as inoculum.
  • Eight grams of Bacto Nutrient Broth (Difco) were dissolved in 1L of distilled water and autoclaved at 15 p.s.i. at 120°C for 15 min. Twenty ml of this broth medium were applied in each pot.
  • OMPI Peptone Type 1 (No. P7750, Sigma Chemical Co.) was added to two different types of soil (field soil and pasteurized sand) in 4 inch pots. The peptone was added in water to the concentration shown in Table 8, followed by the addition of root gall nematodes (200 to 500/pot). Two week old tomato plants (cv. tropic) were then transplated to each of the cups. Prior to planting, the seedlings were treated with NAI in the manner described above. After 4 weeks, the tomato plants were removed and assessed for Gall Index and Dry Weight. The results, as set forth in Table 8, clearly indicate that substantial growth enhancement and gall index reduction is achieved by the addition of the Peptone nutrient starter to the field soil having a normal bacterial background.
  • NAI can be used in a variety of ways for obtaining bacteria as seed inoculants, which can provide for the fungistatic and nemastatic properties of NAI.
  • By inducing production of the nemastatic and fungistatic secretory product one can hybridize the messenger RNA which is produced against a rhizo ⁇ bacterium of the same species which does not provide for nemastatic or fungistatic properties.
  • a rhizo ⁇ bacterium which does not have such properties and hybridize it to the genome of the rhizobacterium which does.
  • the messenger RNA would not hybridize to the genomic DNA of the rhizobacterium lacking the biostatic properties and the genomic DNA of the rhizobacterium which has biostatic properties, which does not hybridize to the messenger RNA from the rhizobacterium which does not have biostatic properties, may then be screened for coding for products which have biostatic properties. It may prove that a single gene does not encode for the product which has the biostatic prop ⁇ erties, in which case there would have to be substan ⁇ tial screening of the rhizobacterium having the biostatic properties to establish the genes necessary for imparting biostatic properties to a different host. However, one can use the genomic DNA or messenger RNA for screening the genomes of rhizobacteria to determine whether they are candidates for providing biostatic characteristics.
  • genes may be inserted into appropriate vectors which provide for expression of the genes and biostatic properties imparted to a host which may have other desirable properties, such as good growth, strong competitiveness in the field, or the like.
  • rhizobacteria are provided which provide protection from nematode and fungal infestation. By inoculating seed with the biostatic rhizobacteria, one can substan- tially reduce infestation while enhancing yield.
  • the rhizobacterial strain NAI was deposited at the American Type Culture Collection, Rockville,

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Virology (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Organic Chemistry (AREA)
  • Dentistry (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Genetics & Genomics (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Biomedical Technology (AREA)
  • Soil Sciences (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

Des rhizobactéries possédant des propriétés némastatiques, introduites dans la rhizosphère d'une plante hôte, protègent cette dernière contre les infestations par les nématodes et par les champignons. La souche NA1 de Serratia marcescens, notamment, permet d'obtenir une protection considérable des plantes hôtes susceptibles d'être infestées, et peut être utilisée comme une source de matériau génétique pour l'introduction dans d'autres bactéries pour leur conférer les propriétés désirées. La colonisation de la rhizosphère et la production de toxines anti-nématodes par la souche rhizobactérienne peuvent être améliorées par l'application d'une source nutritive appropriée, notamment une source possédant de l'azote assimilable.
EP19840904239 1983-10-26 1984-10-25 Protection des plantes a l'aide de rhizobacteries. Withdrawn EP0160089A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54572283A 1983-10-26 1983-10-26
US545722 1990-06-29

Publications (2)

Publication Number Publication Date
EP0160089A1 true EP0160089A1 (fr) 1985-11-06
EP0160089A4 EP0160089A4 (fr) 1986-05-16

Family

ID=24177309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840904239 Withdrawn EP0160089A4 (fr) 1983-10-26 1984-10-25 Protection des plantes a l'aide de rhizobacteries.

Country Status (3)

Country Link
EP (1) EP0160089A4 (fr)
AU (1) AU3672084A (fr)
WO (1) WO1985001878A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4569285A (en) * 1984-08-02 1986-02-06 Monsanto Company Nematode control by recombinant microorganisms
US5264210A (en) * 1988-07-01 1993-11-23 Stine Seed Farm, Inc. Method for protecting plants from nematodes using P. cepacia strains
NZ230159A (en) * 1988-08-09 1992-08-26 Yissum Res Dev Co Biological control of soil nematodes using nematicidal microorganisms isolated from chitin or collagen enriched soils
US6309440B1 (en) * 1998-08-25 2001-10-30 Thomas T. Yamashita Method and composition for promoting and controlling growth of plants
US5409509A (en) * 1990-01-31 1995-04-25 Gesellschaft Fuer Umweltschutz-Beratung Und-Technik Gbr Process to combat harmful organisms originating in seeds or soil by means of seed treatment
US6745512B1 (en) 1990-01-31 2004-06-08 UBT Ingenieurbüro GmbH Quedlinburg Process and device for treating seeds
JP4372975B2 (ja) 2000-06-22 2009-11-25 株式会社テイエス植物研究所 種子病害防除方法
KR100616289B1 (ko) 2004-06-01 2006-08-28 유욱하 식물체로부터 분리한 세라티아 마케스센스 및 이를 이용한 응애의 살충방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064720A2 (fr) * 1981-05-04 1982-11-17 The Research And Development Institute Inc. At Montana State University Compositions contenant un micro-organisme portant un plasmide Hr à pouvoir d'infection éliminé et méthodes pour son utilisation
JPS5823611A (ja) * 1981-08-04 1983-02-12 Tomoe Kagaku Kogyo Kk 作物有害線虫防除法
JPS5824508A (ja) * 1981-08-05 1983-02-14 Tomoe Kagaku Kogyo Kk 線虫捕食菌入り線虫防除剤の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064720A2 (fr) * 1981-05-04 1982-11-17 The Research And Development Institute Inc. At Montana State University Compositions contenant un micro-organisme portant un plasmide Hr à pouvoir d'infection éliminé et méthodes pour son utilisation
JPS5823611A (ja) * 1981-08-04 1983-02-12 Tomoe Kagaku Kogyo Kk 作物有害線虫防除法
JPS5824508A (ja) * 1981-08-05 1983-02-14 Tomoe Kagaku Kogyo Kk 線虫捕食菌入り線虫防除剤の製造方法

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
CENTRAL PATENTS INDEX, BASIC ABSTRACTS JOURNAL, Section C, Week K12, 18th May 1983, abstract no. 28348, Derwent Publications, London, GB; & JP - A - 58 023 611 (TOMOE KAGAKU KOGYO) 12-02-1983 *
CENTRAL PATENTS INDEX, BASIC ABSTRACTS JOURNAL, Section C, Week K12, 18th May 1983, abstract no. 28607, Derwent Publications, London, GB; & JP - A - 58 024 508 (TOMOE KAGAKU KOGYO) 14-02-1983 *
JOURNAL OF NEMATOLOGY, vol. 14, no. 4, October 1982, pages 475A-475B; E. ZAVALETA-MEJIA et al.: "Effects of rhizobacteria on meloidogyne infection" *
NATURE, vol. 286, no. 5776, 28th August 1980, pages 885-886, Basingstoke, GB; J.W. KLOEPPER et al.: "Enhanced plant growth by siderophores produced by plant growth-promoting rhizobacteria" *
See also references of WO8501878A1 *

Also Published As

Publication number Publication date
AU3672084A (en) 1985-05-22
EP0160089A4 (fr) 1986-05-16
WO1985001878A1 (fr) 1985-05-09

Similar Documents

Publication Publication Date Title
RU2127521C1 (ru) Штамм актиномицета streptomyces lydicus для защиты растений от грибковой инфекции, композиция для защиты растений от грибковой инфекции (варианты), способ снижения чувствительности растения к грибковой инфекции (варианты)
Mao et al. Biocontrol of selected soilborne diseases of tomato and pepper plants
EP0593428B1 (fr) Myconematicides
US6495133B1 (en) Gliocladium roseum strains useful for the control of fungal pathogens in plants
Spiegel et al. Evaluation of a newly isolated bacterium, Pseudomonas chitinolytica sp. nov., for controlling the root‐knot nematode Meloidogynejavanica
JP6054392B2 (ja) 線虫の生物学的防除
AU2002227228A1 (en) Bacterial inoculants for enhancing plant growth
WO2002045513A2 (fr) Inoculants bacteriens permettant d'ameliorer la croissance des plantes
Khmel et al. Biological control of crown gall in grapevine and raspberry by two Pseudomonas spp. with a wide spectrum of antagonistic activity
US4996157A (en) Biological control of phytophthora by trichoderma
US5165928A (en) Biological control of phytophthora by gliocladium
Hwang et al. Etiology and severity of fusarium root rot of lentil in Alberta
US20020000540A1 (en) Materials and methods for biological control of soilborne pathogens
EP0160089A1 (fr) Protection des plantes a l'aide de rhizobacteries
KR100204251B1 (ko) 내한성 트리코데르마
KR20020017557A (ko) 항균성 미생물제제와 그의 용도
JP3509056B2 (ja) 有害土壌線虫の生育を抑制する微生物資材およびその製造法
JPH01165506A (ja) ナス科作物の病害防除微生物及び病害防除法
KR20110110769A (ko) 식물 병해 방제용 조성물, 식물 병해 방제 방법, 및 신규 미생물
KR102143334B1 (ko) 식물 주요 병원균에 대하여 항균활성을 갖는 슈도모나스 프레데릭스버겐시스 균주 및 이의 용도
KR100485604B1 (ko) 살선충 활성을 갖는 신규한 균주를 포함하는 미생물 살선충제, 그 제조방법 및 처리방법
JPH0796485B2 (ja) ナス科作物の病害防除微生物および病害防除方法
Stewart et al. Pathogenicity and relative virulence of seven Phytophthora species on kiwifruit
KR100419783B1 (ko) 식물의 생장을 촉진시키며 식물병원균에 대하여 길항력을 갖는 슈도모나스 애루지노사 17ｓ 및 그 돌연변이주
WO2003034807A1 (fr) Bouture racinee et procede d'inoculation de bouture racinee avec une souche microbienne

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19851014

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZAVALETA-MEJIA, EMME

Inventor name: VAN GUNDY, SEYMOUR, D.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZAVALETA-MEJIA, EMMA

Inventor name: VAN GUNDY, SEYMOUR, D.

A4 Supplementary search report drawn up and despatched

Effective date: 19860516

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19880324

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZAVALETA-MEJIA, EMMA

Inventor name: VAN GUNDY, SEYMOUR, D.