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Molecular mechanism of Ca2+-ROS network in plant immune responses

Research Project

Project/Area Number 15K18560
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

Furuichi Takuya  名古屋経済大学, 人間生活科学部管理栄養学科, 教授 (80436998)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords細胞シグナル / 病原菌感染応答 / 植物 / シグナル伝達 / ストレス応答 / 活性酸素種 / カルシウムシグナル / ROS / ストレス / 生体生命情報学
Outline of Final Research Achievements

Infection with pathogens leads withering, reduction of productivity and quality, so its prevention and alleviation is one of the most important issues in agriculture. In this study, we analyzed Ca2+ signal and ROS signal, which is the initial response driven by plants when they recognize pathogenic bacteria, and the dynamics of Ca2+・ROS network functioning by their interaction.
Analysis using Arabidopsis thaliana resulted in a direct result indicating that the Ca2+ signal involved in the pathogenic response is driven by the ROS signal generated ahead of time. In addition, we have newly identified three genes responsible for pathogen-related Ca2+ signal.

Academic Significance and Societal Importance of the Research Achievements

自然界には多種多様な植物病原菌が存在し、植物はこれに抵抗し、自らを守るためのシステムを有する。植物が病原菌を認識した際に動因される初発応答として、Ca2+シグナルとROSシグナルが動員されるが、どちらが先んじて起こるのか、その順位と関連性については未だ明らかではなかった。本研究では、我々が新たに開発した発光プローブおよび2波長検出器を用いることで、Ca2+シグナルとROSシグナルの同時計測を行うことにより、病原応答に関与するCa2+シグナルが先んじて生じるROSシグナルにより動因されることを示す直接的な結果が得られた。

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2018 2017 2016

All Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Book (1 results)

  • [Presentation] Effect of Ultra-High CO2 in International Space Station on Plant Growth and Development2018

    • Author(s)
      Furuichi, T.
    • Organizer
      日本植物生理学会第59回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Impact of Environmental Stresses in International Space Station (ISS) on Plant Growth and Developments2017

    • Author(s)
      Furuichi, T.
    • Organizer
      第58回日本植物生理学会年会
    • Place of Presentation
      鹿児島大学
    • Year and Date
      2017-03-16
    • Related Report
      2016 Research-status Report
  • [Presentation] Role of mechanosensitive channel in gravity sensing and responses against environmental stresses in ISS2017

    • Author(s)
      Furuichi, T., Nakano, M. and Tatsumi, H.
    • Organizer
      the 5th International Symposium on Plant Signaling and Behavior
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Increase in the Cytoplasmic Free Calcium Ion Concentration in Response to Changes in the Gravity Vector in Arabidopsis Seedling.2016

    • Author(s)
      Tatsumi, H., Nakano, M., Toyota, M., Iida, H., Sokabe, M and Furuichi, T.
    • Organizer
      11th Asian Microgravity Symposium (AMS2016)
    • Place of Presentation
      北海道大学
    • Year and Date
      2016-10-25
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 植物の重力感知・適応におけるカルシウムシグナルの役割2016

    • Author(s)
      古市卓也、中野正貴、豊田正嗣、矢野幸子、笠原春夫、鎌田源司、飯田秀利、曽我部正博、辰巳仁史
    • Organizer
      日本宇宙生物科学会第30回大会
    • Place of Presentation
      愛知医科大学
    • Year and Date
      2016-10-13
    • Related Report
      2016 Research-status Report
  • [Book] Plant Biomechanics2018

    • Author(s)
      Toyota, M., Furuichi, T. and Iida, H
    • Total Pages
      435
    • Publisher
      Springer
    • ISBN
      9783319790985
    • Related Report
      2017 Annual Research Report

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Published: 2015-04-16   Modified: 2022-11-04  

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