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Understanding the molecular mechanisms that regulate C4-type cell patterning

Research Project

Project/Area Number 21K05520
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39010:Science in plant genetics and breeding-related
Research InstitutionKwansei Gakuin University

Principal Investigator

Munekage Yuri  関西学院大学, 生命環境学部, 教授 (30423247)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsC4光合成 / オーキシン / 細胞パターン形成 / オーキシン応答 / C4植物 / C4型光合成 / 進化
Outline of Research at the Start

C4型光合成を行う作物は、高温・乾燥に強く生育が速いため生産性が高い。これらの植物では、葉の内部の細胞へCO2を濃縮するために重要なクランツ構造と呼ばれる構造を有する。本研究ではキク科Flaveria属のC3型光合成を行う種と、C4型光合成を行う種の比較解析により明らかになった遺伝子を手掛かりとして、葉の形成に関わる植物ホルモンの効果を解析することでクランツ構造形成メカニズムを明らかにする。

Outline of Final Research Achievements

In this study, we performed a comparative analysis of leaf vein patterning in C3 and C4 species of genus Flaveria, as well as an expression pattern analysis of the SCARECROW gene, which is specifically expressed in bundle sheath cells in C4 species of genus Flaveria. The results showed that C4-type cell pattern formation is induced in the early stage of leaf development. The disruption of the pattern upon inhibition of auxin polar transport revealed that a local auxin concentration gradient is important for the formation of C4-type leaf vein patterns.

Academic Significance and Societal Importance of the Research Achievements

本研究は、生産性の高い作物として重要視されているC4植物が、共通して有する細胞パターン形成の仕組みの一端を明らかにした。C4型細胞パターン形成は代謝産物の輸送効率を上昇させることができるため、作物のC4化に向けて必要な形質の一つである。

Report

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

    (10 results)

All 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] University of Toronto(カナダ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Toronto(カナダ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] A scheme for C4 evolution derived from a comparative analysis of the closely related C3, C3-C4 intermediate, C4-like, and C4 species in the genus Flaveria2022

    • Author(s)
      Munekage Yuri N.、Taniguchi Yukimi Y.
    • Journal Title

      Plant Molecular Biology

      Volume: - Issue: 4-5 Pages: 445-454

    • DOI

      10.1007/s11103-022-01246-z

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] C4種Flaveria bidensisの葉脈形成時に発現するFbDOF1Aのオーキシン応答性の解析2023

    • Author(s)
      藤木 海舟, 谷口 幸美, 宗景 ゆり
    • Organizer
      日本植物学会第88回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Expression pattern of FbDOF1A transcription factor during leaf development in C4 Flaveria bidentis2023

    • Author(s)
      Yuri N. Munekage, Tomoyo Ono, Mei Osawa, Ken Okudono, Yukimi Taniguchi, Tammy L Sage
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] RETICULATA RELATED 3 localized to the chloroplast inner envelope is involved in transcription of the chloroplast genome.2023

    • Author(s)
      Takumi Ito, Hayate Machino, Ryusei Inoue, Tsuyoshi Furumoto, Kenji Nishimura, Yuri N. Munekage
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Analysis of NPQ7 expression suppressed lines of C4 Flaveria bidentis showing defects in PSII activity2023

    • Author(s)
      Ai Ishizaki, Sayaka Koshi, Ryouichi Tanaka, Atsushi Takabayashi, Kentaro Ifuku, Yuri Munekage
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Light harvesting and chloroplast electron transport in NADP-malic enzyme type C4 Flaveria bidentis.2022

    • Author(s)
      Yuri N. Munekage
    • Organizer
      INTERNATIONAL SYMPOSIUM ON PHOTOSYNTHESIS AND CHLOROPLAST REGULATION
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Arabidopsis thalianaにおけるRETICULATA-RELATED 3の機能解析2022

    • Author(s)
      伊藤匠、町野颯、井上龍星、花田裕昭、古本強、西村健司、宗景ゆり
    • Organizer
      第12回日本光合成学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] C4種Flaveria bidentisの葉脈形成時におけるFbDOF1の発現パターン解析2021

    • Author(s)
      小野 知世、奥殿 健、谷口 幸美、宗景 ゆり
    • Organizer
      光合成学会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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