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Molecular basis of plant tissue-specific responses of circadian clocks to environmental stimuli

Research Project

Project/Area Number 25650097
Research Category

Grant-in-Aid for Challenging Exploratory Research

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

Principal Investigator

Endo Motomu  京都大学, 生命科学研究科, 准教授 (80551499)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsシロイヌナズナ / 植物 / 概日時計 / 温度 / 組織特異性 / 維管束
Outline of Final Research Achievements

The circadian clock increases organisms’ fitness by regulating physiological responses. In Arabidopsis, tissue-specific circadian clock functions have emerged, and the importance of the vasculature clock for photoperiodic flowering has been demonstrated. We then studied the involvement of tissue-specific circadian clock regulation of flowering and cell elongation under different photoperiods and temperatures. We found that the circadian clock in vascular phloem companion cells is essential for photoperiodic flowering regulation; by contrast, the epidermis has a crucial impact on ambient temperature-dependent cell elongation. Thus, there are clear assignments of roles among circadian clocks in each tissue. Our results reveal that, unlike the more centralized circadian clock in mammals, the plant circadian clock is decentralized, where each tissue specifically processes individual environmental cues and regulates individual physiological responses.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (9 results)

All 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (5 results)

  • [Int'l Joint Research] University of South California(米国)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Photoperiod sensitivity of the Arabidopsis circadian clock is tissue-specific.2015

    • Author(s)
      Shimizu, H., Araki, T. and Endo, M.
    • Journal Title

      Plant Signaling & Behavior

      Volume: 10 Issue: 6 Pages: e1010933-e1010933

    • DOI

      10.1080/15592324.2015.1010933

    • NAID

      120005689209

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Decentralized circadian clocks process thermal and photoperiodic cues in specific tissues.2015

    • Author(s)
      Shimizu, H., Katayama, K., Koto, T., Torii, K., Araki, T., Endo, M.
    • Journal Title

      Nature Plants

      Volume: 1 Issue: 11 Pages: 15163-15163

    • DOI

      10.1038/nplants.2015.163

    • NAID

      120005669301

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tissue-specific clocks in Arabidopsis show asymmetric coupling2014

    • Author(s)
      Endo, M., Shimizu, H., Nohales, M.A., Araki, T., and Kay, S.A.
    • Journal Title

      Nature

      Volume: 515 Issue: 7527 Pages: 419-422

    • DOI

      10.1038/nature13919

    • NAID

      120005477723

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Presentation] Arabidopsis has a central dominant clock in the vasculature2014

    • Author(s)
      Motomu Endo
    • Organizer
      第38回 内藤コンファレンス
    • Place of Presentation
      シャトレーゼ ガトーキングダム サッポロ
    • Year and Date
      2014-10-07 – 2014-10-10
    • Related Report
      2014 Research-status Report
  • [Presentation] Tissue-specific regulation of circadian clock in plants

    • Author(s)
      Motomu Endo
    • Organizer
      11th Kyoto University –National Taiwan University Symposium
    • Place of Presentation
      京都大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 維管束の概日時計は主要時計としての性質を持つ

    • Author(s)
      遠藤 求、荒木 崇
    • Organizer
      日本植物学会第77回大会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 維管束の概日時計は主要時計としての性質を持つ

    • Author(s)
      遠藤 求、清水 華子、Brenda Chow、Steve Kay、荒木 崇
    • Organizer
      第20回日本時間生物学会学術大会
    • Place of Presentation
      近畿大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 位管速の概日時計は主要時計としての性質を持つ

    • Author(s)
      遠藤求,清水華子,Brenda Chow,SteveKay,荒木崇
    • Organizer
      第55回植物生理学会
    • Place of Presentation
      富山大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2022-01-27  

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