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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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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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 / ウイルス病 / 退緑 / 植物ホルモン / クロロシス / 植物ウイルス病 / シグナル伝達 |
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| Outline of Research at the Start |
植物にもヒトのようにウイルスが引き起こす病害があり，多くの場合，クロロシスと呼ばれる葉の緑色が薄くなったり，黄色くなったりする症状が現れる．これまでの研究から，クロロシスの少なくとも一部では，植物が病原体から身を守るための「植物免疫」が不完全に働くために症状が激しくなっている可能性が考えられた．本研究は，クロロシスが現れる過程に植物免疫がどのように関わっているかを明らかにし，ウイルスが増殖しても病気の症状を示さず，収穫が可能な新しい作物を作り出す基礎を固めようとするものである．
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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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| 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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Report
(5 results)
Research Products
(11 results)
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[Journal Article] RACE1, a Japanese Blumeria graminis f. sp. hordei isolate, is capable of overcoming partially mlo-mediated penetration resistance in barley in an allele-specific manner.2021
Author(s)
Takashi Yaeno, Miki Wahara, Mai Nagano, Hikaru Wanezaki, Hirotaka Toda, Hiroshi Inoue, Ayaka Eishima, Masamichi Nishiguchi, Hiroshi Hisano, Kappei Kobayashi, Kazuhiro Sato, Naoto Yamaoka
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Journal Title
PLOS ONE
Volume: 16
Issue: 8
Pages: e0256574-e0256574
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Complete genome sequence and phylogenetic relationships of tobacco streak virus causing groundnut stem necrosis disease in India.2019
Author(s)
Daliyamola, Jailani, A.A.K. Vemana, K., Roy, A., Krishnareddy, M., Kobayashi, K. Mandal, B.
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Journal Title
VirusDisease
Volume: 30
Issue: 2
Pages: 227-236
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Rapid activation of salicylic acid and systemic acquired resistance pathways by induced knock-down of HSP90C2022
Author(s)
Unung, O. O., Mori, I., Goda, H., Fujita, Y., Kaya, H. and Kobayashi, K.
Organizer
令和4年度日本植物病理学会関西部会
Related Report
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