2022 Fiscal Year Final Research Report
Elucidation of the activation mechanism of plasma membrane proton pump in stomatal opening
Project/Area Number |
20K06703
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 44030:Plant molecular biology and physiology-related
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Research Institution | Nagoya University |
Principal Investigator |
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 植物 / 気孔開口 / 青色光 / イオン輸送 / プロテインキナーゼ |
Outline of Final Research Achievements |
The blue-light receptor phototropin activates plasma membrane proton pump and inward-rectifying potassium channels in guard cells to induce stomatal opening. However, the activation mechanisms of these key enzymes for stomatal opening are largely unknown. In this study, we aimed to further understand the molecular mechanism of stomatal opening through the functional analysis of protein kinases that interact with phototropin and of protein that is phosphorylated in phototoropin signaling. Our study provided important findings in the regulation of activity and quantity of the key enzymes in stomatal opening.
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Free Research Field |
植物生理学
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Academic Significance and Societal Importance of the Research Achievements |
本研究では、青色光受容体フォトトロピンの相互作用因子の機能解析を進めることで、気孔開口の鍵酵素である細胞膜プロトンポンプとカリウムチャネルの新たな制御機構を解明することができた。この成果は、気孔開口のシグナル伝達において新たな構成因子を明らかにし、開口の分子機構の理解に大きく貢献した。また、本研究の成果は将来的に、農業上重要な作物の水利用効率の改善につながる可能性を秘めている。
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