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Molecular Function of Florigen Activation Complex

Research Project

Project/Area Number 16H02532
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Science in genetics and breeding
Research InstitutionYokohama City University

Principal Investigator

Tsuji Hiroyuki  横浜市立大学, 木原生物学研究所, 准教授 (40437512)

Co-Investigator(Kenkyū-buntansha) 田岡 健一郎  横浜市立大学, 木原生物学研究所, 特任助教 (00467698)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥39,650,000 (Direct Cost: ¥30,500,000、Indirect Cost: ¥9,150,000)
Fiscal Year 2019: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2018: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2017: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2016: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Keywordsフロリゲン / メリステム / イネ / 花成 / 生殖 / フロリゲン活性化複合体 / 植物 / 発生・分化 / 育種学
Outline of Final Research Achievements

Florigen (its molecular nature is the FT/Hd3a protein) is a strong determinant of the timing of flowering in plants. The major function of florigen is executed by forming a transcriptional complex called florigen activation complex. Florigen is a globular protein whose biochemical function cannot be clearly identified, and the overall picture of the direct transcriptional targets of the florigen activation complex is unknown. We attempted to visualize the process of florigen distribution in the shoot apical meristem and promotion of downstream gene expression. We found that florigen accumulates in different region of the SAM in different step of flowering. The mechanism of this change depends on the formation of the florigen activation complex.

Academic Significance and Societal Importance of the Research Achievements

フロリゲンは植物の花芽分化を決定づける最重要因子である。しかしフロリゲンがどのような仕組みで花芽分化を開始させるのかはよくわかっていなかった。フロリゲンはフロリゲン活性化複合体を形成することで花芽分化を開始させるが、重要な問題はこのフロリゲン活性化複合体がいつどこで形成され、どのように分布を変えながら花芽分化を進めていくかという問いである。本研究では独自のライブイメージング技術を開発することによって、この過程を初めて明瞭に捉えることに成功した。植物の花がどのように形成されるのかの理解を深め、さらに花の後に訪れる収穫を最大化するための基礎的な理解を深めるものとなる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (26 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (10 results) (of which Int'l Joint Research: 8 results,  Invited: 10 results) Remarks (4 results)

  • [Int'l Joint Research] CIAT(コロンビア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ILCMB/AGI/CIAT(ベトナム)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Training instance segmentation neural network with synthetic datasets for crop seed phenotyping.2020

    • Author(s)
      Toda, Y., Okura, F., Ito, J. et al.
    • Journal Title

      Commun Biol

      Volume: 3 Issue: 1 Pages: 173-173

    • DOI

      10.1038/s42003-020-0905-5

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Life-course monitoring of endogenous phytohormone levels under field conditions reveals diversity of physiological states among barley accessions2020

    • Author(s)
      Hirayama T, Saisho D, Matsuura T, Okada S, Takahagi K, Kanatani A, Ito J, Tsuji H, Ikeda Y, Mochida K
    • Journal Title

      Plant Cell Physiologists

      Volume: pcaa046 Issue: 8 Pages: 1-32

    • DOI

      10.1093/pcp/pcaa046

    • NAID

      120007019116

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] WEG1 , which encodes a cell wall hydroxyproline‐rich glycoprotein, is essential for parental root elongation controlling lateral root formation in rice2020

    • Author(s)
      Lucob‐Agustin Nonawin、Kawai Tsubasa、Takahashi‐Nosaka Misuzu、Kano‐Nakata Mana、Wainaina Cornelius M.、Hasegawa Tomomi、Inari‐Ikeda Mayuko、Sato Moeko、Tsuji Hiroyuki、Yamauchi Akira、Inukai Yoshiaki
    • Journal Title

      Physiologia Plantarum

      Volume: 169 Issue: 2 Pages: 214-227

    • DOI

      10.1111/ppl.13063

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Regulation of stomatal opening and histone modification by photoperiod in Arabidopsis thaliana2019

    • Author(s)
      Aoki Saya、Toh Shigeo、Nakamichi Norihito、Hayashi Yuki、Wang Yin、Suzuki Takamasa、Tsuji Hiroyuki、Kinoshita Toshinori
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 10054-10054

    • DOI

      10.1038/s41598-019-46440-0

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] TILLERS ABSENT1, the WUSCHEL ortholog, is not involved in stem cell maintenance in the shoot apical meristem in rice2019

    • Author(s)
      Chie Suzuki, Wakana Tanaka, Hiroyuki Tsuji, and Hiro-Yuki Hirano
    • Journal Title

      Plant Signaling & Behavior

      Volume: 14 Issue: 9 Pages: 1640565-1640565

    • DOI

      10.1080/15592324.2019.1640565

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An optimized isolation protocol yields high‐quality RNA from cassava tissues ( Manihot esculenta Crantz)2019

    • Author(s)
      Behnam Babak、Bohorquez‐Chaux Adriana、Castaneda‐Mendez Oscar Fernando、Tsuji Hiroyuki、Ishitani Manabu、Becerra Lopez‐Lavalle Luis Augusto
    • Journal Title

      FEBS Open Bio

      Volume: 9 Issue: 4 Pages: 814-825

    • DOI

      10.1002/2211-5463.12561

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of the VIGS System in the Dioecious Plant Silene latifolia2019

    • Author(s)
      Fujita Naoko、Kazama Yusuke、Yamagishi Noriko、Watanabe Kyoko、Ando Saki、Tsuji Hiroyuki、Kawano Shigeyuki、Yoshikawa Nobuyuki、Komatsu Ken
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 20 Issue: 5 Pages: 1031-1031

    • DOI

      10.3390/ijms20051031

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TFL1-Like Proteins in Rice Antagonize Rice FT-Like Protein in Inflorescence Development by Competition for Complex Formation with 14-3-3 and FD.2018

    • Author(s)
      Kaneko-Suzuki M, Kurihara-Ishikawa R, Okushita-Terakawa C, Kojima C, Nagano-Fujiwara M, Ohki I, Tsuji H, Shimamoto K, Taoka KI.
    • Journal Title

      Plant Cell Physiol.

      Volume: 59 Issue: 3 Pages: 458-468

    • DOI

      10.1093/pcp/pcy021

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular function of florigen2017

    • Author(s)
      Tsuji H
    • Journal Title

      Breeding Science

      Volume: 67 Issue: 4 Pages: 327-332

    • DOI

      10.1270/jsbbs.17026

    • NAID

      130006164476

    • ISSN
      1344-7610, 1347-3735
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Imaging florigen distribution in vivo2017

    • Author(s)
      Saihara N and Tsuji H
    • Journal Title

      Plant Morphology

      Volume: 印刷中

    • NAID

      130006647096

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Molecular function of florigen2019

    • Author(s)
      Tsuji H
    • Organizer
      PSC seminar, Shanghai Jao Tong University, Shanghai, China
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular function of florigen2019

    • Author(s)
      Tsuji H
    • Organizer
      Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences, Shanghai, China
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Imaging florigen distribution in the shoot apical meristem2019

    • Author(s)
      Tsuji H
    • Organizer
      17th International Symposium on Rice Functional Genomics (ISRFG2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] DNA Methylation of the Transposable Elements Is Reconfigured at the Onset of the Reproductive Phase in the Rice Shoot Apical Meristem2019

    • Author(s)
      Tsuji H
    • Organizer
      Plant and Animal Genome XXVII
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular Function of Florigen2018

    • Author(s)
      Tsuji H
    • Organizer
      16th International Symposium on Rice Functional Genomics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Developmental phenology of shoot apical meristem in rice2018

    • Author(s)
      Tsuji H
    • Organizer
      MBE Satellite Symposium “Genomics and Modeling”
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Maintenance of Stem-ness and Cell Fate Determination in Plants and Animals2018

    • Author(s)
      Tsuji H
    • Organizer
      第59回日本植物生理学会年会
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Florigen-induced transposon silencing in the shoot apical meristem2017

    • Author(s)
      Tsuji H
    • Organizer
      Cold Spring Harbor Asia Conference on Plant Cell and Developmental Biology
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] フロリゲンが植物に環境の記憶を刻み込む過程のイメージング2016

    • Author(s)
      辻 寛之
    • Organizer
      日本植物学会第80回大会
    • Place of Presentation
      沖縄コンベンションセンター 沖縄県那覇市
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] フロリゲンの超解像度イメージング2016

    • Author(s)
      辻 寛之
    • Organizer
      イネ遺伝学・分子生物学ワークショップ2016
    • Place of Presentation
      名古屋大学 愛知県名古屋市
    • Year and Date
      2016-07-04
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Remarks] 横浜市立大学・木原生物学研究所 辻研究室

    • URL

      https://hiroyukitsuji.tumblr.com/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 横浜市立大学・木原生物学研究所 辻研究室

    • URL

      https://hiroyukitsuji.tumblr.com

    • Related Report
      2018 Annual Research Report
  • [Remarks] 横浜市立大学・木原生物学研究所 辻研究室

    • URL

      http://hiroyukitsuji.tumblr.com

    • Related Report
      2017 Annual Research Report
  • [Remarks] Website

    • URL

      http://hiroyukitsuji.tumblr.com

    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2021-02-19  

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