2001 Fiscal Year Final Research Report Summary
Cooperative research on biologicalcontrolofplantpest
| Project/Area Number |
11695074
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
植物保護
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| Research Institution | Kobe University |
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Principal Investigator |
MAYAMA Shigeyuki Faculty of Agriculture, Kobe University, Professor, 農学部, 教授 (00112251)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAYASHIKI Hitoshi Faculty of Agriculture, Kobe University, Associate Assistant, 農学部, 助手 (50252804)
PARK Pyoyun Graduate School of Science and Technology, Kobe University, Professor, 自然科学研究科, 教授 (20147094)
TOSA Yukio Graduate School of Science and Technology, Kobe University, Assistant Professor, 自然科学研究科, 助教授 (20172158)
MIZUNO Masashi Graduate School of Science and Technology, Kobe University, Assistent Professor, 自然科学研究科, 助教授 (00212233)
TAKEDA Makio Graduate School of Science and Technology, Kobe University, Professor, 自然科学研究科, 教授 (20171647)
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| Project Period (FY) |
1999 – 2001
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| Keywords | plant protection / plant disease / plant insect pest / biologicalcontrol / RQPR |
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| Research Abstract |
Current status in China of biological control of plant diseases and insect pest was studied. The recent development of biological research and application was summarized in the final report. We especially studied on biological control of tomato bacterial wilt by PGPR strain, Pseaudomonas fluorescence FPT9601. It was found that the strain could colonize within the root tissues of both monocot and dicot plants. They formed microcolonies in a concave portion in the root surface such as injured places from which bacterial pathogens can be easily invaded, indicating that the presence of PGPR strains in the portion seem to be appropriate for suppressing the pathogens. Once the bacteria were invaded in roots, an induced resistance was activated in plants. Flaggellin components of the bacteria were important factor for colonization and induction of defense response in plants. Also, 2,4-DAPG, diacetylphlorogrucinol, was found as a major antibacterial factor to suppress the bacteria wilt strain. On the other hand, the methods employed for biological control of insect pests have been studied in China. It was found that introduction of natural enemies, conservation, environment management for manipulation of natural enemies, augmentation and release of biological control agents have been developed and they greatly contribute to the improvement of the biological control in China.
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