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Analysis of cotyledon formation in Arabidopsis embryo ~ on relation among regulatory genes, cell and organ shape

Research Project

Project/Area Number 16K07401
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plant molecular biology/Plant physiology
Research InstitutionKumamoto University (2017-2018)
Nara Institute of Science and Technology (2016)

Principal Investigator

Aida Mitsuhiro  熊本大学, 国際先端科学技術研究機構, 教授 (90311787)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords発生 / 転写因子 / 形態形成 / 葉 / 境界部 / 対称性 / オーキシン
Outline of Final Research Achievements

We have established a method to precisely record 3D structure of plant embryos. Using this method, we traced how the shape of the embryo changed as the progression of embryonic leaf formation and found that the apical region of the embryo showed polarized growth. This polarized growth was associated with the polarized shape of individual cells that compose embryonic leaves. Embryos lacking the function of CUC2 and CUC3, genes that are required for correct cotyledon shape, showed less polarized cell shape and grew more symmetrically compared to normal embryos, suggesting that regulation of cell shape underlies correct organ shape.

Academic Significance and Societal Importance of the Research Achievements

植物は体の先端部に新しい葉を次々に付け加えていくことで成長する。葉を正しい位置に正しい形で形成するためには様々な遺伝子が働くことがわかっているが、個々の遺伝子がどのようにして葉を構成する個々の細胞の振る舞いに影響し、ひいては葉全体の形を決定するかは明らかでない。本研究ではシロイヌナズナのCUC2およびCUC3遺伝子が個々の細胞の形を特定の方向へ伸ばす働きを持つことを明らかにした。今後は、これらの遺伝子の細胞レベルでの働きが器官全体の形の形成とどのような関係にあるかを明らかにすることで、遺伝子が形作りに働く仕組みを明らかにできることが期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (18 results)

All 2018 2017 2016 Other

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

  • [Int'l Joint Research] ハインリッヒ・ハイネ大学/マックス・プランク植物育種学研究所(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] パラッキー大学(チェコ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] カーディフ大学(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] シレジア大学(ポーランド)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] INRA, CNRS(フランス)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Coordination of meristem and boundary functions by transcription factors in the SHOOT MERISTEMLESS regulatory network2018

    • Author(s)
      Scofield Simon、Murison Alexander、Jones Angharad、Fozard John、Aida Mitsuhiro、Band Leah R.、Bennett Malcolm、Murray James A. H.
    • Journal Title

      Development

      Volume: 145 Pages: 157081-157081

    • DOI

      10.1242/dev.157081

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Regional Interaction during Arabidopsis Flower Primordium Formation.2018

    • Author(s)
      Aida M
    • Organizer
      2nd International Conference on Meristem Biology, University of Science and Technology of China, Hefei
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Embryonic Shoot Formation: Establishing the Basis for Plant Life.2018

    • Author(s)
      Aida M
    • Organizer
      HBMC Scientific Advisory Committee Meeting Symposium, Fujian Agriculture and Forestry University, Fuzhou
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] セグメンテーションによるシロイヌナズナ胚頂端部の形態解析.2018

    • Author(s)
      井上雄規, 相田光宏
    • Organizer
      新学術領域研究「植物多能性幹細胞」 第2回若手ワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] シロイヌナズナの茎頂分裂組織形成におけるオーキシン生合成遺伝子の発現解析.2018

    • Author(s)
      田中俊介, 相田光宏
    • Organizer
      新学術領域研究「植物多能性幹細胞」 第2回若手ワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] 境界部からの情報発信~子葉形成と境界部の関係~.2018

    • Author(s)
      相田光宏
    • Organizer
      遺伝学研究所研究会「イネ分子遺伝学の飛躍」国立遺伝学研究所, 三島
    • Related Report
      2018 Annual Research Report
  • [Presentation] シュート幹細胞の形成機構.2018

    • Author(s)
      相田光宏
    • Organizer
      第4回幹細胞研究会「幹細胞の基本原理と共通性~植物と動物の比較から~」岡崎コンファレンスセンター, 岡崎
    • Related Report
      2018 Annual Research Report
  • [Presentation] 茎頂分裂組織を介した植物の成長と形づくりのメカニズム.2018

    • Author(s)
      相田光宏
    • Organizer
      熊本大学, 熊本
    • Related Report
      2018 Annual Research Report
  • [Presentation] 胚のシュート形成過程におけるCUC1およびCUC2タンパク質による<i>STM</i>遺伝子の発現制御2018

    • Author(s)
      岩本 亮介, 渡辺舜, 相田 光宏
    • Organizer
      日本植物生理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Embryonic Shoot Formation: Establishing the Basis for Plant Life2017

    • Author(s)
      Mitsuhiro Aida
    • Organizer
      The 1st IROAST Symposium “Plant Cell and Developmental Biology: Approaches to Multiscale Biosystems”
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 頂端分裂組織の成長方向を考える2017

    • Author(s)
      相田光宏
    • Organizer
      2017年遺伝学研究所研究会「イネ分子遺伝学の方向性」
    • Related Report
      2017 Research-status Report
  • [Presentation] シロイヌナズナにおける茎の分枝メカニズム2016

    • Author(s)
      相田光宏
    • Organizer
      第80回日本植物学会年会
    • Place of Presentation
      沖縄コンベンションセンター(沖縄県宜野湾市)
    • Year and Date
      2016-09-16
    • Related Report
      2016 Research-status Report
    • Invited
  • [Remarks] 植物発生学 相田研究室

    • URL

      http://iroast.kumamoto-u.ac.jp/aida/ja/

    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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