• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Deciphering the role of CBL5, a protein with unknown function involved in salt and drought stress signaling in plants.

Research Project

Project/Area Number 19K21140
Project/Area Number (Other) 18H05996 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0601:Agricultural chemistry and related fields
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) 2018-08-24 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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
Outline of Research at the Start

植物の塩・乾燥ストレス耐性の発現や栄養源のバランス確保は、根・篩管・気孔の各種イオン輸送体により担われている。輸送体の調節因子の1つであるCa+センサータンパク質CBL5は、植物の環境適応能力発現における重要性が示唆されているものの、具体的な機能は解明されていない。本研究では、篩管のNa+輸送体HKT1および根のNO3-輸送体SLAH2・SLAH3を候補として、CBL5の機能と役割の解明をめざす。各輸送体についてCBL5とその補因子CIPKによる活性調節の有無を電気生理測定により調べる。さらにcbl5遺伝子欠損植物を用いて植物体におけるCBL5の機能を解明する。

Outline of Final Research Achievements

In this study, we performed the following two experiments to elucidate the function of CBL5.
(1) Anion channel SLAC1, CBL5, and CIPK11 kinase were co-expressed in animal cells, and phosphorylation site of SLAC1 was determined by LC-MS/MS. The obtained results suggest that CBL5-CIPK11 has a specific phosphorylation target other than S59 and S120, well-known SLAC1 phosphorylation sites from previous studies.
(2) Phenotypic observation of cbl1, cbl5, and cbl9 triple knock out plants showed altered stomatal responses compared with wild-type plants. This was not observed in cbl1 cbl9 double or cbl5 single knock out plants, suggesting that CBL5 contributes to the regulation of stomatal opening together with CBL1 and CBL9.

Academic Significance and Societal Importance of the Research Achievements

CBL5は植物の塩・乾燥耐性において重要なタンパク質とされつつもその機能が明らかになっていなかった。本研究により,その機能の一端を解明することに成功した。これにより植物の環境ストレス耐性応答の複雑な分子機構や、カルシウムイオンが関わる生体内分子シグナリングの全貌解明に一歩近づくことができた。また、塩害・乾燥地域でも生育できるような環境ストレス耐性強化作物創成へ向けた指針がまた一つ得られたと言える。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

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

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ミュンスター大学(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ミュンスター大学(ドイツ)

    • Related Report
      2018 Annual Research 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 Annual Research 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 Annual Research Report 2019 Research-status Report 2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Guard Cell Membrane Anion Transport Systems and Their Regulatory Components: An Elaborate Mechanism Controlling Stress-Induced Stomatal Closure2019

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

      Plants

      Volume: 8 Issue: 1 Pages: 9-9

    • DOI

      10.3390/plants8010009

    • Related Report
      2019 Research-status Report 2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Multiple CBL-CIPK pairs regulate Arabidopsis guard cell ion channels2019

    • Author(s)
      Shunya Saito, Misaki Sato, Shin Hamamoto, Philipp Koster, Jorg Kudla, and Nobuyuki Uozumi
    • Organizer
      International Workshop on Plant Membrane Biology
    • Related Report
      2019 Research-status Report 2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dual lipidation on Ca2+-dependent kinases governs SLAC1-meidated stomatal closure2018

    • Author(s)
      Shunya Saito, Shin Hamamoto, Nobuyuki Uozumi
    • Organizer
      International Symposium on Photosynthesis and Chloroplast Biogenesis
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2018-08-27   Modified: 2024-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi