2016 Fiscal Year Final Research Report
Induction mechanisms of susceptibility to bacterial wilt and development of its monitoring system
| Project/Area Number |
25292029
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plant protection science
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| Research Institution | Kochi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
大西 浩平 高知大学, その他の研究科, 教授 (50211800)
木場 章範 高知大学, その他の研究科, 教授 (50343314)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | 植物－病原体相互作用 |
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| Outline of Final Research Achievements |
We developed the model system for evasion of Ralstonia solanacearum-induced innate immunity by Nicotiana benthamiana and elucidate jasmonic acid-mediated innate immunity used phosphatidic acid as a substrate. It was required for several effectors secreted by R. solanacearum to induce expression of phosphatidic acid phosphatase gene in N. benthamiana, evading its innate immunity. This innate immunity was induced by infection with other plant bacteria such as Pseudomonas syringae. These bacteria also secrete effectors through the type III secretion machinery to induce expression of phosphatidic acid phosphatase gene, evading innate immunity by N. benthamiana. After evading innate immunity, virulent strain OE1-1 of R. solanacearum grew on host cells and produced mushroom-type biofilms which was required for its virulence. Taken together, these results open the door to uncover key interactions between host plants and R. solanacearum at the initial stage of infection.
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| Free Research Field |
植物病理学
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