WO2005045004A1 - アブラナ科植物病害の防除剤および防除方法 - Google Patents
アブラナ科植物病害の防除剤および防除方法 Download PDFInfo
- Publication number
- WO2005045004A1 WO2005045004A1 PCT/JP2004/016597 JP2004016597W WO2005045004A1 WO 2005045004 A1 WO2005045004 A1 WO 2005045004A1 JP 2004016597 W JP2004016597 W JP 2004016597W WO 2005045004 A1 WO2005045004 A1 WO 2005045004A1
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- WIPO (PCT)
- Prior art keywords
- disease
- controlling
- cgf4526
- variovorax
- plants
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Classifications
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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
- 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
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- 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
-
- 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
Definitions
- the present invention relates to an agent and a method for controlling cruciferous plant diseases using bacteria belonging to the genus Variovorax.
- Clubroot which is a major soil disease of cruciferous plant diseases, is a soil fungal disease that occurs in more than 300 species of cruciferous plants such as Chinese cabbage, cabbage, cauliflower, and broccoli. Clubroot disease is hindering the stable production of these cruciferous crops. As a symptom, nodules are formed on the roots about 20 days after planting, and when infected from the early stage, cabbage and cabbage do not head, and even when infected after the latter half, the harvest does not increase, and harvesting does not occur at all. Some are not obtained.
- Non-patent Document 1 filamentous fungi
- Patent Document 2 bacteria belonging to the genus Bacillus
- Patent Document 2 this your Rere over (-, Zhu 1 to Pseudomonas j3 ⁇ 4 Vietnam Enshisu (Pseudomonas vietnamiensi s) microorganism belonging to the, yellowing disease of cruciferous plants such as Chinese cabbage (Bateishiriumu disease
- Non-Patent Document 1 Nihonbyoshoho Vol.62, 1996, p.281
- Patent Document 1 JP-A-11-335217
- Patent Document 2 JP 2003-231606 Summary of the Invention
- An object of the present invention is to provide a controlling agent and a controlling method which are highly effective in controlling cruciferous clubroots such as Chinese cabbage clubroot and cabbage clubroot which are diseases of cruciferous plants without environmental pollution. To provide.
- the present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, a strain of the genus Variovorax CG F4526 having a high control effect against clubroot of Brassicaceae plants such as Chinese cabbage ( Variovorax sp. CGF4526), and found that it is possible to particularly effectively control root-knot disease by bringing a control agent containing the present bacterium into contact with a cruciferous plant, thereby completing the present invention.
- an agent for controlling root-knot disease of cruciferous plants comprising a strain of the genus Variovorax and a viable fungus thereof as an active ingredient, and a crucifer using the same
- a method for controlling a plant clubroot disease is provided.
- the Variovorax sp. CGF4526 strain according to the present invention not only effectively controls the clubroot disease of cruciferous plants but also has excellent storage stability and plant growth. It also has the effect of promoting odor, and has high practicality as a pesticide.
- the use of the agent or method for controlling root-knot disease of cruciferous plants in the present invention can strongly suppress the onset of root-knot disease of cruciferous plants, and currently used chemical agents It has the same or better effect. Further, the use of the control agent of the present invention does not cause environmental pollution by pesticides unlike the existing chemical agents. Furthermore, the controlling agent of the present invention can be distributed in a stable state on the market. [0012] The controlling agent of the present invention can be mixed with seedling cultivation soil at the time of sowing and can be poured onto seeds before and after sowing. It is also possible to immerse the roots of the seedlings before planting in the diluent, or to inject the seedlings during growing or immediately before planting. INDUSTRIAL APPLICABILITY According to the present invention, clubroot diseases of cruciferous plants such as Chinese cabbage, cabbage, cauliflower and broccoli can be strongly controlled without problems of environmental pollution.
- the microorganism of the present invention is a strain of the genus Variovorax sp. CGF4526, which has a high control effect against root-knot disease of cruciferous plants. This strain (microorganism) was deposited as shown in the data below.
- Variovorax sp. CGF4526 was selected from about 7000 strains of bacteria isolated and collected from rice and vegetables, based on the antibacterial activity against filamentous fungi and the disease control test using potted Chinese cabbage. This is the strain obtained as a result of the experiment.
- the growth state of CGF4526 on a nutrient agar medium is shown below. The observation was performed after culturing at 30 ° C for 3 days.
- CGF4526 The colony morphology of CGF4526 is cream-colored, round, smooth on all edges, low-convex, and glossy.
- the 1530 bp nucleotide sequence of 16s-rRNA was determined.
- a homology search was performed using the nucleotide sequence of the obtained 16s_rRNA.
- the highest homology was Variovorax paradoxus.
- CGF4526 is a gram-negative bacillus having motility, which is a bacterium belonging to Pseudomonas gnolepaceae by being positive for catalase activity, positive for oxidase activity and not forming endospores. Belongs to Pseudomonas gnorape II due to its assimilation Bacteria were classified. In addition, 16s-rRNA analysis indicated that it belongs to the genus Rioborax. In the genus Variovorax, it is considered Variovorax paradoxus (Variovorax paradoxus), but since it has not been determined, Variovorax sp.
- the medium used here is not particularly limited as long as the bacteria can proliferate.
- the medium appropriately contains a carbon source, a nitrogen source, and an inorganic substance capable of growing, any of a natural medium and a synthetic medium can be used.
- the medium include a bouillon medium, a King B medium, a PS medium, and a PDB medium.
- the concentration of the cells is usually concentrated to about 50 ⁇ 10 1 Q cfuZml.
- the control agent of the present invention may be used as it is, the live bacteria after culturing, it is generally used as a solid or liquid preparation usable as an agricultural chemical. Therefore, the cultured wet cells are coated with a protective agent consisting of saccharides, sodium glutamate and sodium phosphate buffer, and dried under vacuum.
- the protective agent may be mixed with the cells in the form of an aqueous solution or as a solid.
- the immobilization of the cells of the present invention can be carried out by using a saccharide comprising one or more of saccharose, fructose, glucose and sorbitol as a protective agent, mixing with the cells, and vacuum drying. Alternatively, it can be performed by drying with a method such as freezing vacuum.
- the Variovorax bacterium CGF4526 strain cultured here can be mixed with an appropriate carrier to prepare a powder or granules.
- the carrier includes mineral powders such as talc, calcium carbonate, and diatomaceous earth; peat moss; high molecular compounds such as polybutyl alcohol; and natural high molecular compounds such as xanthan gum and alginic acid.
- concentration of the bacterial cell 10 5 cfu / g or more, preferably 10 7 cfu / g or more.
- 10 9 cfu / g or more preferably 10 1Q cfu / g or more.
- control agent of the present invention can be used without a problem of phytotoxicity.
- the control agent of the present invention can be mixed with seedling cultivation soil at the time of sowing, or can be poured onto seeds before and after sowing. Further, it is also possible to immerse the roots of the seedlings before planting in the diluent, or to inject the seedlings during raising or immediately before planting. It is preferable to combine the treatments at the time of sowing and at the time of planting because the colonization of the fungus on roots becomes more efficient.
- the controlling agent of the present invention is used in the above method, in the case of the mixing treatment with the seedling cultivation soil, lg or more is mixed per 1 L of the soil, and the mixture is stirred so as to be uniform.
- the bacterial concentration in the culture medium is 10 6 cfu
- the diluent when the grown seedlings are immersed in the present diluent before or after sowing or before planting, the diluent has a bacterial concentration of 10 7 cfu / ml or more, preferably 10 8 cfu / ml or more. Adjust as follows.
- CGF4526 is a fungal fungus (Fusarium oxysporum and 1> Vertici ⁇ lrum dali ae) that is a filamentous fungus among the bacteria isolated and collected from rice, vegetables, and weeds. Furthermore, as a result of selection by a pot test for yellowing and clubroot using Chinese cabbage seedlings, they were found to have an effect of controlling Chinese cabbage yellow spot and cruciferous plant clubroot, and were selected.
- Antibacterial activity against Fusarium oxysporum and Chinese cabbage verticillium was measured by using a test strain of Fusarium oxysporum and Chinese cabbage verticillium daliae on a PDA medium. (Potato dextrose medium) was measured by performing confronting culture. Culture was performed at 25 ° C for 1 week or 3 weeks. [0030] Furthermore, the bacterial strain having antibacterial activity obtained in the confrontation culture was subjected to a control test against Chinese cabbage yellow rot and Chinese cabbage root-knot disease.
- the method was as follows: roots of Chinese cabbage seedlings were immersed in a 10 8 cfu / ml diluted solution of the test strain for 24 hours at the time of planting, and planting was carried out on the contaminated soil four to five weeks after the planting. As a result, it was found that clubroot was strongly suppressed.
- Bouillon medium meat extract 3g, peptone 10g, NaCl 15g, water 1L, pH 7.0
- PDA medium potato dextrose medium: Potato exudate 200 g, glucose 20 g, water 1 L, pH 5.6) 0
- Variovorax bacterium CGF4526 was cultured in a broth liquid medium for 24 hours, and the obtained cells were separated by centrifugation to prepare a suspension of the test bacteria.
- Chinese cabbage seedlings (cultivar: Shin-Megumi Megumi) were immersed in this suspension and left for 24 hours while immersed in the suspension. After that, they were planted in contaminated soil.
- the contaminated soil used was field soil that was homogenized and mixed with Chinese cabbage roots (with roots) that were infected by Chinese cabbage. After 33 days, the presence or absence of disease was investigated, and the control effect was determined. The results are shown in Table 2.
- a high control effect was observed for the variolax bacterium CGF4526.
- the degree of onset was calculated from the degree of root-knot formation, and the evaluated root-onset index was 0; healthy, 1; no more than 10% of roots were attached, and 2; 3 to 50% of the roots have attached nodules. 3; 50% or more of the roots have attached nodules.
- Severity 100 X ⁇ (index value) X (number of individuals corresponding to each index) ⁇ ⁇ ⁇ 3 X (number of test strains)
- Variovorax bacterium CGF4526 was cultured in a broth liquid medium for 24 hours, and the obtained cells were separated by centrifugation to prepare a suspension of the test bacteria.
- Broccoli seedlings (variety: Ryokutei) were immersed in this suspension, and left for 24 hours while immersed in the suspension. After that, they were transplanted to a 10.5 cm polypot filled with contaminated soil mixed with the crushed liquid of the roots affected by Chinese cabbage. Approximately 30 days later, the presence or absence of disease was examined, and the control effect was determined. The results are shown in Table 3.
- the concentration of the suspension of the Norobolux bacterium strain CGF4526 was 10 8 cfu / ml. As a result, a high control effect was observed for the Variovorax bacterium CGF4526.
- the vario borax bacteria CGF4526 strain was cultured for 24 hours in broth liquid medium, the obtained cells were separated by centrifugation and incorporated into a cell concentration of 10 8 cfu / g sowing soil.
- Chinese cabbage seeds (variety; Megumi Shin Ideal) were sown and raised for 3 weeks.
- a suspension (10 8 cfu / ml) of the Varioborax bacterium strain CGF4526 cultured in the same manner was prepared, and Chinese cabbage seedlings were immersed in the suspension and left for 24 hours while immersed in the suspension. After that, the plants were planted in a field mixed with the crushed liquid of the diseased root of Chinese cabbage. Approximately 65 days later, the presence or absence of disease was investigated, and the control effect was determined. The results are shown in Table 4. As a result, a high control effect was observed for Norioborax bacterium CGF4526.
Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-380231 | 2003-11-10 | ||
JP2003380231A JP4301920B2 (ja) | 2003-11-10 | 2003-11-10 | アブラナ科植物病害の防除剤および防除方法 |
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WO2005045004A1 true WO2005045004A1 (ja) | 2005-05-19 |
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PCT/JP2004/016597 WO2005045004A1 (ja) | 2003-11-10 | 2004-11-09 | アブラナ科植物病害の防除剤および防除方法 |
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JP (1) | JP4301920B2 (ja) |
KR (1) | KR100663955B1 (ja) |
WO (1) | WO2005045004A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009067717A (ja) * | 2007-09-12 | 2009-04-02 | Mayekawa Mfg Co Ltd | マメ科植物の害虫による摂食を阻害する方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4918850B2 (ja) * | 2005-12-27 | 2012-04-18 | セントラル硝子株式会社 | アブラナ科植物病害の防除剤および防除方法 |
WO2009145074A1 (ja) | 2008-05-29 | 2009-12-03 | 日本たばこ産業株式会社 | 植物体中の重金属含量を低減する細菌 |
JP6384087B2 (ja) * | 2014-03-31 | 2018-09-05 | 栗田工業株式会社 | 植物の栽培方法 |
KR101711091B1 (ko) * | 2015-07-17 | 2017-02-28 | 한국생명공학연구원 | 식물 병원균에 대해 방제활성을 가지는 내생세균인 바리오보락스 파라독서스 kb5 균주 및 이의 용도 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11335217A (ja) * | 1998-05-22 | 1999-12-07 | Taki Chem Co Ltd | アブラナ科根こぶ病防除材 |
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2003
- 2003-11-10 JP JP2003380231A patent/JP4301920B2/ja not_active Expired - Fee Related
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- 2004-11-09 KR KR1020067003199A patent/KR100663955B1/ko not_active IP Right Cessation
- 2004-11-09 WO PCT/JP2004/016597 patent/WO2005045004A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11335217A (ja) * | 1998-05-22 | 1999-12-07 | Taki Chem Co Ltd | アブラナ科根こぶ病防除材 |
Non-Patent Citations (2)
Title |
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NARISAWA K. ET AL: "Suppression of clubroot and Verticillium yellows in Chinese cabbage in the field by the root endophytic fungus, Heteroconium Chaetospira", PLANT PATHOLOGY, vol. 49, 2000, pages 141 - 146, XP002985996 * |
OTSU Y. ET AL: "Biological control of phytophagous ladybird beetles Epilachna vigintioctopunctata (Col.Coccinellidae) by chitinolytic phylloplane bacteria Alcaligenes paradoxus entrapped in alginate beads", JOURNAL OF APPLIED ENTOMOLOGY, vol. 127, no. 8, September 2003 (2003-09-01), pages 441 - 446, XP002985997 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009067717A (ja) * | 2007-09-12 | 2009-04-02 | Mayekawa Mfg Co Ltd | マメ科植物の害虫による摂食を阻害する方法 |
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Publication number | Publication date |
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JP4301920B2 (ja) | 2009-07-22 |
KR100663955B1 (ko) | 2007-01-02 |
JP2005137330A (ja) | 2005-06-02 |
KR20060039021A (ko) | 2006-05-04 |
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