| Project/Area Number |
22KJ0789
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| Project/Area Number (Other) |
22J11072 (2022)
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Multi-year Fund (2023)
Single-year Grants (2022) |
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| Section | 国内 |
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| Review Section |
Basic Section 39020:Crop production science-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
QU YUCHEN 東京大学, 農学生命科学研究科, 特別研究員(PD)
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| Project Period (FY) |
2023-03-08 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2023: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2022: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | plant biology / photosynthesis / light response / ケミカルスクリーニング / 環境ストレス耐性 / 光合成向上 |
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| Outline of Research at the Start |
本研究では、（１）光合成の可視化装置を用いて、化合物スクリーニングを行う評価系を新たに確立し、（２）1万5千種以上の化合物ライブラリーを対象に大規模スクリーニングを行い、高温環境における光合成を制御する因子を網羅的に解明する。得られた知見から、近未来に予想される温暖化環境で優れた生産性を示す作物の創出に向けた分子育種戦略のデザインを目指す。
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| Outline of Annual Research Achievements |
In order to satisfy the food and fuel demands of a growing population, global food production needs to increase by more than 50% before 2050. However, various environmental stresses in the natural environment inhibit plant growth and result in reduced yields. This is primarily caused by decreases in photosynthetic capacity. Thus, there is an urgent need to develop new strategies to improve agricultural productivity and ensure food security. In this study, a novel chemical-screening system with 96 well plates and leaf disks of tobacco was used to identify several anthraquinone derivatives that could relieve high light stress from plants. Treatments with these chemicals induced greater photosynthetic capacity after high light stress conditions for 20 to 72 hours in tobacco and better plant growth after exposure to light stress for 96 hours in Arabidopsis and lettuces. The photoprotective effect of anthraquinone derivatives is closely related to chemical induced oxidation of PSI. Furthermore, there were no negative effects on plant growth in chemically treated plants under non-stressful conditions. Taken together, this study shows that anthraquinone derivatives can confer high light stress tolerance in plants, resulting in improved plant photosynthesis and growth in environments with light stress.
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