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Artificial feedback technology to understand the genetic redundancy

Research Project

Project/Area Number 21K19037
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 37:Biomolecular chemistry and related fields
Research InstitutionTohoku University

Principal Investigator

Ueda Minoru  東北大学, 理学研究科, 教授 (60265931)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords植物ホルモン / ジャスモン酸 / 受容体 / ゼニゴケ / 始原植物ホルモン / COI1-JAZ / dn-iso-OPDA / MpCOI1 / dn-OPDA / 遺伝的冗長性
Outline of Research at the Start

進化した陸上植物は多くの植物ホルモン受容体ペアをもつ。高等植物では、これらが冗長的に機能しつつ、それぞれ異なる生物応答を制御している。高等植物は、何のために、一つのホルモンに対して多くの受容体を持つのか?本申請では、天然物化学と分子進化遺伝学をハイブリッドさせた「人工的先祖返り(Artificial Throwback; ATB)」戦略により、この謎の解明に挑戦する。

Outline of Final Research Achievements

We have achieved chemical synthesis of phytohormones of Marchantia polymorpha, and have also obtained the gene for the Marchantia MpCOI1, which was successfully expressed heterologously using an insect cell culture system. We have also established an in vitro experimental system to confirm the affinity of the chimeric receptor MpCOI1-AtJAZ, consisting of these proteins, with the plant hormone of the common glasswort by fluorescence anisotropy. The results showed that, as expected, the zeren moss phytohormone formed a complex of MpCOI1-AtJAZ and ligand with only some of the 13 JAZ subtypes. This completed the proof-of-concept experiment in an in vitro system.
Subsequently, a transgenic plant with the chimeric receptor MpCOI1-AtJAZ was adjusted by introducing the MpCOI1 gene into a coi1-1 mutant strain of Arabidopsis thaliana. Selection of homozygotes is currently underway, and upon completion, we plan to proceed with “Artificial Throwback (ATB)” experiments in individual plants.

Academic Significance and Societal Importance of the Research Achievements

植物のほとんどの生理機能は植物ホルモンによって制御されており、その進化的起源から複雑な植物ホルモンシグナル伝達ネットワークを解明する試みが盛んである。ジャスモン酸イソロイシン(A-Ile)は、植物の病原菌感染耐性や虫による食害への防御応答など、魅力的な作用をもつ植物ホルモンである。高等植物では、JA-Ile受容体が冗長的に機能し、それぞれ異なる生物応答を制御している。一方、始原陸上植物ゼニゴケのMpCOI1-MpJAZ共受容体ペアは1種類のみであり、進化の過程で遺伝的冗長性が発生した。本研究は、天然物化学と分子進化遺伝学をハイブリッドさせた「人工的先祖返り」戦略により、この謎の解明に挑戦した。

Report

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

    (1 results)

All 2022

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

  • [Journal Article] Ligand diversity contributes to the full activation of the jasmonate pathway in Marchantia polymorpha2022

    • Author(s)
      Kneeshaw Sophie、Soriano Gonzalo、Monte Isabel、Hamberg Mats、Zamarreno Angel M.、Garcia-Mina Jose M.、Franco-Zorrilla Jose Manuel、Kato Nobuki、Ueda Minoru、Rey-Stolle Ma Fernanda、Barbas Coral、Michavila Santiago、Gimenez-Ibanez Selena、Jimenez-Aleman Guillermo H.、Solano Roberto
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 36

    • DOI

      10.1073/pnas.2202930119

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

URL: 

Published: 2021-07-13   Modified: 2025-01-30  

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