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Analysis of auxin perception and novel signal transduction in plant elongation growth

Research Project

Project/Area Number 26440140
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plant molecular biology/Plant physiology
Research InstitutionNagoya University

Principal Investigator

TAKAHASHI KOJI  名古屋大学, 理学研究科, 助教 (40283379)

Co-Investigator(Renkei-kenkyūsha) KINOSHITA Toshinori  名古屋大学, トランスフォーマティブ生命分子研究所, 教授 (50271101)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsオーキシン / 細胞膜プロトンポンプ / 伸長生長 / 細胞膜H+-ATPase / プロトンポンプ / リン酸化 / 胚軸伸長 / H+-ATPase / ABP1
Outline of Final Research Achievements

The purpose of this project is to clarify the regulatory mechanism of plasma membrane proton pump (H+-ATPase) phosphorylation in response to phytohormone auxin during the elongation growth of plant tissues. It was suggested that Auxin-Binding Protein1 (ABP1), which was one of the auxin receptor candidates in this mechanism, has no direct involvement by the analysis using ABP1 knockout mutant, abp1-TD1 and abp1-C1. As results of chemical screening and mutant screening, several mutant candidates that markedly reduced the auxin-induced H+-ATPase phosphorylation could be isolated. We are going to examine the isolated mutants. In addition, we also investigated the effect of brassinosteroids on phosphorylation of H+-ATPase and found some of the crosstalk with auxin action.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (5 results)

All 2017 2016 2015

All Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Brassinosteroid-induced hypocotyl elongation in Arabidopsis thaliana2017

    • Author(s)
      高橋宏二、南杏鶴、木下俊則
    • Organizer
      第58回 日本植物生理学会 年会
    • Place of Presentation
      鹿児島大学 郡元キャンパス
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] Pharmacological approach to the mechanism of auxin-induced H+-ATPase phosphorylation2016

    • Author(s)
      Kohei Teramoto, Koji Takahashi, Shin-ichiro Inoue, Toshinori Kinoshita
    • Organizer
      第57回 日本植物生理学会
    • Place of Presentation
      岩手大学(盛岡)
    • Year and Date
      2016-03-18
    • Related Report
      2015 Research-status Report
  • [Presentation] Functional analysis of PP2C-Ds in stomatal movement2016

    • Author(s)
      Hodaka Sugimoto, Yohei Takahashi, Yuki Hayashi, Koji Takahashi, Shin-ichiro Inoue, Mee Yeon Park, William M. Gray, Toshinori Kinoshita
    • Organizer
      第57回 日本植物生理学会
    • Place of Presentation
      岩手大学(盛岡)
    • Year and Date
      2016-03-18
    • Related Report
      2015 Research-status Report
  • [Presentation] Plasma membrane H+-ATPase in the charophytic alga2015

    • Author(s)
      Koji Takahashi, Koichi Hori, Kinuka Ohtaka, Hiroyuki Ohta, Toshinori Kinoshita
    • Organizer
      Plant Biology 2015
    • Place of Presentation
      Minneapolis, Minnesota, USA
    • Year and Date
      2015-07-26
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Possible involvement of PP2C-D for dephosphorylation of the plasma membrane H+-ATPase in guard cells of Arabidopsis thaliana2015

    • Author(s)
      Hodaka Sugimoto, Yohei Takahashi, Yuki Hayashi, Koji Takahashi, Shinichiro Inoue, Mee Park, William Gray, Toshinori Kinoshita
    • Organizer
      Plant Biology 2015
    • Place of Presentation
      Minneapolis, Minnesota, USA
    • Year and Date
      2015-07-26
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2014-04-04   Modified: 2018-03-22  

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