Regulation by intracellular regulators of plant ion transporters
| Project/Area Number |
16H04906
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied biochemistry
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | イオンチャネル / シロイヌナズナ / 気孔閉鎖 / 脂質修飾 / リン酸化制御 / リン酸化酵素 / パルミトイル化 / カルシウム / 輸送体 / イオン / リン酸化 / 膜輸送体 / 気孔 |
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| Outline of Final Research Achievements |
Ion transport system play an important role in control of the concentration of major ions in plant cells. They contribute to adjust intracellular osmotic pressure and maintain membrane potential by adapting to changes in environmental stress such as dryness, dehydration and salt damage. The transporter functions are involved in the opening and closing of pores responsible for carbon dioxide absorption and transpiration, environmental stress adaptation, and energy conversion of biological membranes. In order to maintain the homeostasis of cells to cope with environmental changes and to regulate the balance of nutrient absorption and excretion in the whole body of the plant, we elucidated the regulatory mechanism of anion channels mediating induction of stomatal closure. This regulation is performed by intracellular kinases, which indicate that intracellular molecules and transporters cooperate to adapt to environmental changes.
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| Academic Significance and Societal Importance of the Research Achievements |
植物の細胞内の主要イオンの濃度を調節する陰イオン輸送体を制御する因子を明らかにした．これにより，乾燥・脱水・塩害などの環境ストレス変化に適応に関与する初期段階の分子レベルの調節系が明らかとなった．二酸化炭素の吸収や蒸散を担う気孔の開閉，環境ストレス適応，生体膜のエネルギー変換に関与することから，植物の養分吸収の改善，地球規模の環境変化に耐性を持つ植物の創出，環境保全，作物育種や環境変化に立ち向かう分子の創成につながる基盤的に知見を獲得した．
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] Reduction of Spermidine Content Resulting from Inactivation of Two Arginine Decarboxylases Increases Biofilm Formation in Synechocystis sp. PCC 68032018
Author(s)
Kota Kera, Tatsuya Nagayama, Kei Nanatani, Chika Saeki-Yamoto, Akira Tominaga, Satoshi Souma, Nozomi Miura, Kota Takeda, Syunsuke Kayamori, Eiji Ando, Kyohei Higashi, Kazuei Igarashi and Nobuyuki Uozumi
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Journal Title
Journal of Bacteriology
Volume: 9
Issue: 9
Pages: 664-706
DOI
Related Report
Peer Reviewed
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[Journal Article] Identification and characterization of compounds that affect stomatal movements.2018
Author(s)
Toh S, Inoue S, Toda Y, Yuki T, Suzuki K, Hamamoto S, Fukatsu K, Aoki S, Uchida M, Asai E, Uozumi N, Sato A, Kinoshita T.
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Journal Title
Plant & Cell Physiology
Volume: in press
Issue: 8
Pages: 1568-1580
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] CPK6キナーゼの膜局在化に依存した気孔閉鎖誘導チャネルSLAC1の調節2017
Author(s)
齋藤俊也, 浜本晋, 内海俊彦, 守屋康子, 佐藤陽子, 野口寛人, 戸澤譲, 山内清司, 橋本研志, Joerg Kudla, 魚住信之
Organizer
第12回トランスポーター研究会
Related Report
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[Presentation] Lipidation of Arabidopsis CPK6 promotes the plasma membrane targeting and the stomata closure mediated by activation of SLAC1 in Arabidopsis guard cells2016
Author(s)
Saito, S., Hamamoto, S., Sato, Y., Uozumi, N., Hashimoto, K., Kudla, J., Utsumi, T., Moriya, K., Tozawa, Y., and Yamauchi, S.
Organizer
International workshop on Plant Membrane Biology
Related Report
Int'l Joint Research
