2015 Fiscal Year Final Research Report
The exploratory research by screenings of soil microorganisms to develop a new pesticide for controlling weed seeds
| Project/Area Number |
26660043
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Plant protection science
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| Research Institution | Fukui Prefectural University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MORIMOTO Masanori 近畿大学, 農学部, 准教授 (10278731)
NOMURA Takumasa 仁愛大学, 人間生活学部, 講師 (40362529)
KIMOTO Hisashi 福井県立大学, 生物資源学部, 教授 (70283166)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 農薬創製 / 雑草防除 / 土壌微生物 / 種子死滅 / 殺種子剤 |
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| Outline of Final Research Achievements |
Although reducing soil-seed banks is known as the major point in weed control, any pesticides that kill the soil-buried seeds have not been developed. The reason for the lack of seed-killing pesticides should be attributed to a lack of model agents leading to the pesticides. We found that seeds of an upland weed, chickweed (Stellaria media), die in some soils within less than two months, caused by infestation of soil microorganisms.
In the present study, the soils in which the chickweed seeds died were screened. Out of 37 soils, the seed-death phenomenon was detected in 5 soils collected from upland fields or road sides, which are proper habitats of chickweed. We, then, established a method to isolate the seed-killing microorganisms and got a Bacillus strain from a road side soil in Fukui city. The chick weed seeds were killed with unknown compounds produced by the fungus. From the results, an exploratory process to find lead agents of the seed-killing pesticide has been shown.
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| Free Research Field |
植物保護科学
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