2022 Fiscal Year Final Research Report
Does plant immunity have roles in chlorosis and cell death in chlorosis development model plants?
| Project/Area Number |
19K06055
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 39040:Plant protection science-related
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| Research Institution | Ehime University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
賀屋 秀隆 愛媛大学, 農学研究科, 准教授 (80398825)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 遺伝子組換え植物 / 細胞死 / 植物ウイルス / 植物免疫 / 退緑黄化 / 病徴 |
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| Outline of Final Research Achievements |
It is frequently observed that diseased plant leaves which show chlorotic symptoms such as virally induced mosaic, senesce more rapidly than healthy plant leaves. Our previous study suggested that chlorosis development accompanies the activation of plant immunity. Here we tested a hypothesis that plant immunity would have a role in plant disease symptom development. Our comprehensive gene expression study revealed the activation of plant immunity-related gene including those having roles in cell death induction, activation of defense hormone salicylic acid pathways, the production of reactive oxygen species during chlorosis development.
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| Free Research Field |
分子植物ウイルス学
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| Academic Significance and Societal Importance of the Research Achievements |
新型コロナウイルス感染症の治療に免疫抑制効果のあるステロイドが用いられたことを例にとるまでもなく，ヒトなど動物の感染症ではその発症に宿主免疫が密接に関連している．本研究では，植物免疫が病原体の排除という本来の役割に加え，病害発症という負の働きもあることを示した．これによって，より持続的な農業生産に役立つ新たな品種の開発に向けて新たな戦略が加わるとともに，風邪薬のような対症療法的な農薬を開発する道も拓かれた．
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