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Analysis of stomatal movement regulation system under multiple stresses for developing practical basis of stress-resistant plant production

Research Project

Project/Area Number 20K15447
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38030:Applied biochemistry-related
Research InstitutionTohoku University

Principal Investigator

Saito Shunya  東北大学, 工学研究科, 学術研究員 (00825226)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsイオンチャネル / 植物 / リン酸化酵素 / 膜タンパク質 / 電気生理学 / タンパク質修飾 / 生体内シグナル分子 / 質量分析 / カルシウム
Outline of Research at the Start

近年, 乾燥・病害などに対応できる植物の創生が世界的に求められている。その実現には気孔の開閉を環境に合わせて最適化することが不可欠であるが, 各種ストレスに応じた気孔のキナーゼ(リン酸化酵素)-イオンチャネル(イオン輸送体)間シグナルは一部しか解明されておらず, 複合ストレスに対する植物の応答解析も既存の方法では困難である。そこで,
・ホスホプロテオミクス解析による, 各種ストレス下における気孔のキナーゼ-イオンチャネル間シグナルの全貌の解明
・独自の蛍光プローブを用いた, 様々な複合ストレスに対する気孔の応答解析
を試み, 得られた知見を統合することでストレス耐性植物創生の基盤を作ることを目指す。

Outline of Final Research Achievements

Our original plan was to carry out phosphoproteomics using guard cell protoplasts (GCPs) and analysis of stress-treated GCPs with a novel florescent probe. However, we faced problems with our GCP preparation and stability of our probe. Therefore we had to shift to an alternate plan, and carried out oocyte and yeast experiments instead. By doing these, and with the help of our co-workers, we were able to discover previously unknown phosphorylation sites in SLAC1, KAT1 and other K+ channels. We are now beginning to electrophysiologically analyze what function these phosphorylation sites confer to these channels (We already finished the measurement for SLAC1). In addition, we have been in search and investigation for regulatory component of SLAC1 as well. As a result, we discovered a unique regulatory component which regulates stomatal movement but does not reside in guard cell.

Academic Significance and Societal Importance of the Research Achievements

今回研究成果として同定されたチャネルのリン酸化部位はいずれもまだ報告例がない部位である。このうちSLAC1に関しては電気生理測定での解析を完了している。過去の報告と照らし合わせると、SLAC1のリン酸化制御は1・2残基によって決まるのではなく、十数個の残基の間でリン酸化が微妙なバランスで行われることによって制御されている可能性が高く、このバランスをどう制御していくかが重要と判明した。KAT1とその他チャネルについては今後解析を続ける。また「気孔外に発現するにもかかわらず気孔開閉を制御する因子」については、全く新しいアプローチで気孔の開閉を制御する鍵となり得るため、今後の解析が特に重要である。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (18 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (7 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Int'l Joint Research] ミュンスター大学(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ミラノ大学(イタリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ミラノ大学(イタリア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ミュンスター大学(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ミラノ大学(イタリア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ミュンスター大学(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ムルシア大学/セビリア大学(スペイン)

    • Related Report
      2020 Research-status Report
  • [Journal Article] The HKT1 Na+ transporter protects plant fertility by decreasing Na+ content in stamen filaments2023

    • Author(s)
      Uchiyama T、Saito S、Yamanashi T、Kato M、Takebayashi K、Hamamoto S、Tsujii M、Takagi T、Nagata N、Ikeda H、Kikunaga H、Suda T、Toyama S、Miwa M、Matsuyama S、Seo M、Horie T、Kuromori T、Yamagami M、Ishimaru Y、Uozumi N
    • Journal Title

      Science Advances

      Volume: 9 Issue: 22 Pages: 5495-5495

    • DOI

      10.1126/sciadv.adg5495

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 植物イオン輸送体の活性を調節する脂質修飾酵素2023

    • Author(s)
      齋藤俊也、魚住信之
    • Journal Title

      アグリバイオ

      Volume: 7 Pages: 982-984

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Potassium transporter KUP9 participates in K+ distribution in roots and leaves under low K+ stress2022

    • Author(s)
      Taro Yamanashi, Takeshi Uchiyama, Shunya Saito, Taiki Higashi, Hayato Ikeda, Hidetoshi Kikunaga, Mutsumi Yamagami, Yasuhiro Ishimaru and Nobuyuki Uozumi
    • Journal Title

      Stress Biology

      Volume: 2 Issue: 1 Pages: 1-11

    • DOI

      10.1007/s44154-022-00074-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Green Tea Catechins, (-)-Catechin Gallate, and (-)-Gallocatechin Gallate are Potent Inhibitors of ABA-Induced Stomatal Closure2022

    • Author(s)
      Kanane Sato、Shunya Saito、Kohsuke Endo、Masaru Kono、Taishin Kakei、Haruka Taketa、Megumi Kato、Shin Hamamoto、Matteo Grenzi、Alex Costa、Shintaro Munemasa、Yoshiyuki Murata、Yasuhiro Ishimaru、Nobuyuki Uozumi
    • Journal Title

      advanced science

      Volume: 2201403 Issue: 21 Pages: 1-15

    • DOI

      10.1002/advs.202201403

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 植物の脂質修飾型キナーゼによるCa2+シグナリング制御2022

    • Author(s)
      齋藤俊也、魚住信之
    • Journal Title

      月刊「細胞」

      Volume: 54 Pages: 338-342

    • Related Report
      2021 Research-status Report
  • [Journal Article] 4. Potassium transport and its regulation in plants2021

    • Author(s)
      齋藤 俊也、石丸 泰寛、魚住 信之
    • Journal Title

      Japanese Journal of Soil Science and Plant Nutrition

      Volume: 92 Issue: 2 Pages: 99-107

    • DOI

      10.20710/dojo.92.2_99

    • NAID

      130008024157

    • ISSN
      0029-0610, 2424-0583
    • Year and Date
      2021-04-05
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Calcium-Regulated Phosphorylation Systems Controlling Uptake and Balance of Plant Nutrients2020

    • Author(s)
      Saito Shunya、Uozumi Nobuyuki
    • Journal Title

      Frontiers in Plant Science

      Volume: 11 Pages: 1-11

    • DOI

      10.3389/fpls.2020.00044

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Arabidopsis K+ channel inhibitors for unraveling details of stress signaling mechanism.2023

    • Author(s)
      Shunya Saito, Kanane Sato, Kohsuke Endo, Kyota Suzuki, Masaru Kono, Taishin Kakei, Haruka Taketa, Megumi Kato, Shin Hamamoto, Matteo Grenzi, Alex Costa, Shintaro Munemasa, Yoshiyuki Murata, Mieko Arisawa, Yasuhiro Ishimaru & Nobuyuki Uozumi
    • Organizer
      International Workshop on Plant Membrane Biology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Arabidopsis KUP9 is Important for the Translocation of K+ in Roots and Shoots2023

    • Author(s)
      Taro Yamanashi, Takeshi Uchiyama, Shunya Saito, Taiki Higashi, Hayato Ikeda, Hidetoshi Kikunaga, Mutsumi Yamagami, Yasuhiro Ishimaru, Nobuyuki Uozumi
    • Organizer
      International Workshop on Plant Membrane Biology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Role of AtHKT1 in Removing Na from Flowers2023

    • Author(s)
      Takeshi Uchiyama, Shunya Saito, Taro Yamanashi, Megumi Kato, Masaru Tsujii, Hayato Ikeda, Hidetoshi Kikunaga, Toshimi Suda, Sho Toyama, Misako Miwa, Shigeo Matsuyama, Yasuhiro Ishimaru, Nobuyuki Uozumi
    • Organizer
      International Workshop on Plant Membrane Biology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] (-)-Catechin Gallate and (-)-Gallocatechin Gallate, Components of Green Tea, are Potent Inhibitors of ABA-Induced Stomatal Closure2022

    • Author(s)
      Kanane Sato, Shunya Saito, Kohsuke Endo, Masaru Kono, Taishin Kakei, Haruka Taketa, Megumi Kato, Shin Hamamoto, Matteo Grenzi, Alex Costa, Shintaro Munemasa, Yoshiyuki Murata, Yasuhiro Ishimaru & Nobuyuki Uozumi
    • Organizer
      Plant Calcium Signaling Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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