• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of the mechanism of vascular time-info-sharing

Research Project

Project/Area Number 17K19392
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Biology of Cells to Organisms, and related fields
Research InstitutionNara Institute of Science and Technology (2018)
Kyoto University (2017)

Principal Investigator

Endo Motomu  奈良先端科学技術大学院大学, 先端科学技術研究科, 教授 (80551499)

Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywordsシロイヌナズナ / 概日時計 / カリウム / 長距離シグナル伝達 / 長距離輸送
Outline of Final Research Achievements

In this study, the mechanism which integrated time information of individual organ and tissue in plant individual was analyzed. Focusing on the vascular system connecting the root with shoot, potassium was added to roots, and the potassium concentration in xylem sap and circadian rhythm in the shoot were measured. The results showed that potassium taken up from the roots via AHA1 was transported to the shoot through xylem transport and controlled the stability of the circadian rhythms of shoot clock. In addition, we found that circadian rhythms stabilized by potassium led to periodic sugar production, which in turn might transmit time information from the shoots to the roots.
These results indicate that nutrition is an important mechanism for the sharing of time information between roots and shoots through vascular bundles.

Academic Significance and Societal Importance of the Research Achievements

カリウムは植物の三大栄養素であり、植物が最も必要とする元素である。これらの元素の役割は栄養素としてこれまで解析されてきたが、本研究によって根の時間情報を伝えるための情報源としても働いていることを明らかにした。同様に光合成よって作られる糖も栄養素としてだけでなく、地上部から根へと時間情報を伝える情報源として機能している可能性を示していることから、植物にとって重要な栄養素と概日時計をカップリングさせることで、より効率的な栄養の取り込み、産生、輸送、利用を可能にしている可能性が見出され、農業への応用が期待される。

Report

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

    (9 results)

All 2019 2018 2017

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] Isolation of Arabidopsis Palisade and Spongy Mesophyll Cells2018

    • Author(s)
      Uemoto K, Araki T, Endo M
    • Journal Title

      Methods Mol Bio

      Volume: 1830 Pages: 141-148

    • DOI

      10.1007/978-1-4939-8657-6_9

    • ISBN
      9781493986569, 9781493986576
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] SODIUM POTASSIUM ROOT DEFECTIVE1 regulates FLOWERING LOCUS T expression via the microRNA156-SQUAMOSA PROMOTER BINDING PROTEIN-LIKE3 module in response to potassium conditions.2018

    • Author(s)
      Negishi K, Endo M, Abe M, Araki T.
    • Journal Title

      Plant Cell Physiol.

      Volume: 59 Issue: 2 Pages: 404-413

    • DOI

      10.1093/pcp/pcx199

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Circadian clock during plant development2018

    • Author(s)
      Inoue K, Araki T, Endo M
    • Journal Title

      Journal of Plant Research

      Volume: 131 Issue: 1 Pages: 59-66

    • DOI

      10.1007/s10265-017-0991-8

    • NAID

      120006497362

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Integration of input signals into the gene network in the plant circadian clock2017

    • Author(s)
      Inoue K, Araki T, Endo M
    • Journal Title

      Plant and Cell Physiology.

      Volume: 58 Issue: 6 Pages: 977-982

    • DOI

      10.1093/pcp/pcx066

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] シロイヌナズナにおける、組織間で時間情報を共有する仕組みの解明2019

    • Author(s)
      上本 恭平, 国本 有美, 荒木 崇, 遠藤 求
    • Organizer
      第60回日本植物生理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] シロイヌナズナにおける、組織間で時間情報を共有する仕組みの解明2018

    • Author(s)
      上本 恭平, 国本 有美, 荒木 崇, 遠藤 求
    • Organizer
      第25回日本時間生物学会学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Investigation the mechanism of long-distance clock information sharing.2018

    • Author(s)
      Kyohei Uemoto, Takashi Araki, Motomu Endo
    • Organizer
      第59回日本植物生理学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] シロイヌナズナの柵状組織と海綿状組織特異的なトランスクリプトーム解析2017

    • Author(s)
      上本 恭平、荒木 崇、遠藤 求
    • Organizer
      第81回日本植物学会
    • Related Report
      2017 Research-status Report
  • [Presentation] シロイヌナズナにおける時間情報の組織間伝達の解明2017

    • Author(s)
      上本 恭平、荒木 崇、遠藤 求
    • Organizer
      第24回日本時間生物学会学術大会
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-07-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi