Studies on blue light signaling in stomatal guard cells
Project/Area Number |
26251032
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Plant molecular biology/Plant physiology
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Research Institution | Kyushu University |
Principal Investigator |
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥40,560,000 (Direct Cost: ¥31,200,000、Indirect Cost: ¥9,360,000)
Fiscal Year 2016: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2015: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2014: ¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
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Keywords | 孔辺細胞 / 気孔 / H+-ATPase / 二酸化炭素 / 陰イオンチャネル / フォトトロピン / 青色光 / 光情報伝達 / イオン輸送 / タンパク質リン酸化 / 蛋白質キナーゼ / CO2応答 |
Outline of Final Research Achievements |
Using thermography of leaf, we isolated the mutants that exhibited the reduction of stomatal opening in response to blue light. We identified the responsible gene as AHA1, an isoform of the H+-ATPases in guard cells. We also determined the phosphorylated proteins in guard cells in response to blue light utilizing the phosphoproteome analyses. We selected a rapidly phosphorylated protein in phototropin-dependent manners and identified the protein as MAPKKK, and named it as CBC1. We found that CBC1 and its homolog CBC2 redundantly function to stimulate stomatal opening in response to blue light. We clarified that CBCs mediated the inhibition of S-type anion channels in response to blue light. Such inhibition was required for the full-opening of stomata. We also found that CBCs mediated stomatal opening in response to low concentration of CO2. CBCs receive signals from both blue light and CO2, and stimulate photosynthetic CO2 fixation in plant.
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] Brassinosteroid involvement in Arabidopsis thaliana stomatal opening.2017
Author(s)
Inoue S, Iwashita N, Takahashi Y, Gotoh E, Okuma E, Hayashi M, Tabata R, Takemiya A, Doi M, Murata Y, Kinoshita T. and Shimazaki K.
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Journal Title
Plant & Cell Physiol.
Volume: 58
Issue: 6
Pages: 1048-1058
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] CAM植物における青色光依存の気孔開口2015
Author(s)
後藤栄治,大岩本康平,北川裕基,井上晋一郎,島崎研一郎,土井道生
Organizer
第56回日本植物生理学会年会
Place of Presentation
東京農業大学世田谷キャンパス(東京都)
Year and Date
2015-03-16 – 2015-03-18
Related Report
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