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Tradeoff levels between pathogen responses and plant growth in Arabidopsis ecotypes

Research Project

Project/Area Number 19K22430
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 44:Biology at cellular to organismal levels, and related fields
Research InstitutionOsaka University

Principal Investigator

Kakimoto Tatsuo  大阪大学, 理学研究科, 教授 (70214260)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsdefense / pathogen / growth / Arabidopsis / ecotype / FLS2 / シロイヌナズナ / エコタイプ / fls2 / FLG22 / 適応度 / 進化 / 基本免疫 / GWAS / 成長 / 植物 / 病原体応答
Outline of Research at the Start

植物は、病原体に対して、まずは基本免疫応答で対応するが、病原体応答が強すぎると成長が阻害される。免疫応答と成長のトレードオフレベルの最適値は、エコタイプ進化の上でどのように獲得されるのだろうか。予備的実験により、基本免疫応答による成長抑制のレベルはエコタイプにより大きく異なっていることがわかってきた。それぞれの生息域で最適なバランスへとエコタイプが進化する仕組みを分子レベルで理解することを目標とする。ゲノム配列と採取地がわかっている1000のエコタイプを用いた研究と、特定エコタイプ間のrecombinant inbred 系統用いた研究を進め、エコタイプ進化に関わる遺伝子の同定も行う。

Outline of Final Research Achievements

We treated Arabidopsis accessions of with a flagellin fragment, flg22 and examined growth repression. The growth repression levels by flagellin were highly diverse. Many accessions around the Great Lakes of USA showed no or only weak responses to flg22. A genome-wide association study revealed that the trait was associated with the chromosomal region near FLS2, coding for the flagellin receptor. This study revealed that partial or complete loss of FLS2 may contribute to the fitness in specific environments.

Academic Significance and Societal Importance of the Research Achievements

種内にはvariation(変異)が存在し、それぞれの形質の環境への適応度に応じ、それぞれの地域での各変異の頻度が違っている。一般的には特有の複数の形質の組み合わせの適応度の違いが結果として隔離を引き起こし、エコタイプ (生態型)が生まれる。本研究で見られた変異が、いわゆるエコタイプ形成に至っているのかどうかは今後の課題であるが、本研究は基本免疫応答の種内の多様性を明らかにしたもので、進化の研究に新たな視点をもたらす可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results)

  • [Journal Article] Pericycle cell division competence underlies various developmental programs2022

    • Author(s)
      Zhang Y, Umeda M, Kakimoto T.
    • Journal Title

      Plant Biotechnology

      Volume: 39 Issue: 1 Pages: 29-36

    • DOI

      10.5511/plantbiotechnology.21.1202a

    • NAID

      130008161264

    • ISSN
      1342-4580, 1347-6114
    • Year and Date
      2022-03-25
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two types of bHLH transcription factor determine the competence of the pericycle for lateral root initiation.2021

    • Author(s)
      Zhang Y, Mitsuda N, Yoshizumi T, Horii Y, Oshima Y, Ohme-Takagi, M, Matsui M, Kakimoto, T.
    • Journal Title

      Nature Plants

      Volume: 7 Issue: 5 Pages: 633-643

    • DOI

      10.1038/s41477-021-00919-9

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Early Endosomal Trafficking Component BEN2/VPS45 Plays a Crucial Role in Internal Tissues in Regulating Root Growth and Meristem Size in Arabidopsis2020

    • Author(s)
      Matsuura Yuki、Fukasawa Narumi、Ogita Kosuke、Sasabe Michiko、Kakimoto Tatsuo、Tanaka Hirokazu
    • Journal Title

      Frontiers in Plant Science

      Volume: 11 Pages: 1027-1027

    • DOI

      10.3389/fpls.2020.01027

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 側根原基形成における局所的なオーキシン生合成の役割2022

    • Author(s)
      金田紗苗,柿本辰男
    • Organizer
      第63回日本植物生理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ROP interactive partners (RIPs) regulate microtubule dynamics and orientation of cell division in the leaves2021

    • Author(s)
      ハスチムグ、柿本辰男
    • Organizer
      第62回日本植物生理学会
    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Presentation] PFAs and PFBs, two types of bHLH proteins, determine the competence of pericycle for lateral root initiation2021

    • Author(s)
      Ye Zhang , Nobutaka Mitsuda , Takeshi Yoshizumi , Yoko Horii , Yoshimi Oshima , Masaru Ohme-Takagi , Minami Matsui , Tatsuo Kakimoto
    • Organizer
      Secrets of stem cells underlying longevity and persistent growth in plants
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 転写因子-ペプチド-受容体-転写因子フィードバックループによる篩部パターン形 成の仕組み2021

    • Author(s)
      柿本辰男
    • Organizer
      近畿植物学会 第 10 回 講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 側根原基形成における局所的なオーキシン生合成の役割2021

    • Author(s)
      金田紗苗 柿本辰男
    • Organizer
      近畿植物学会 第 10 回 講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] シロイヌナズナの側根形成初期に発現する GATA23 遺伝子の破壊株の解析2021

    • Author(s)
      山本凜、柿本辰男
    • Organizer
      近畿植物学会 第 10 回 講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] PFAs and PFBs, two types of bHLH proteins, determine the competence of pericycle for lateral root initiation2021

    • Author(s)
      Ye Zhang , Nobutaka Mitsuda , Takeshi Yoshizumi , Yoko Horii , Yoshimi Oshima , Masaru Ohme-Takagi , Minami Matsui , Tatsuo Kakimoto
    • Organizer
      国際シンポジウム Secrets of stem cells underlying longevity and persistent growth in plants
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Regulation of vascular development by CLE peptides2020

    • Author(s)
      柿本辰男
    • Organizer
      日本植物学会第84回大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Transcription factors that govern the stem-cell-like features of pericycle2020

    • Author(s)
      Tatsuo Kakimoto
    • Organizer
      第61回 日本植物生理学会 サテライトシンポジウム
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] シロイヌナズナの葉形態形成におけるR I P タンパク質の機能解析2020

    • Author(s)
      哈斯其木格,柿本辰男
    • Organizer
      第61回日本植物生理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Identification of key transcription factors that determine pericycle stem cell identity in Arabidopsis.2020

    • Author(s)
      Ye Zhang, Nobutaka Mitsuda, Takeshi Yoshizumi, Youichi Kondou, Masaru Takagi, Minami Matsui, Tatsuo Kakimoto
    • Organizer
      第61回日本植物生理学会年会
    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2023-01-30  

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