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Molecular mechanisms of cell cycle regulation supporting plasticity in plant growth

Research Project

Project/Area Number 17H03696
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Plant molecular biology/Plant physiology
Research InstitutionKanazawa University (2018-2019)
Nagoya University (2017)

Principal Investigator

Ito Masaki  金沢大学, 生命理工学系, 教授 (10242851)

Co-Investigator(Kenkyū-buntansha) 町田 泰則  名古屋大学, 理学研究科, 名誉教授 (80175596)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2017: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywords細胞周期 / 転写制御 / シロイヌナズナ / 細胞サイズ / 細胞分裂 / 植物 / 植物細胞 / 発生・分化 / 発現制御 / シグナル伝達 / 非対称分裂
Outline of Final Research Achievements

DREAM complex is known as large protein complex containing both E2F and MYB3R, which is expected to be involved in regulation of cell cycle genes, generally in eukaryotes. In this study, we identified three new candidates for the subunits constituting the protein complex in Arabidopsis. In addition, we generated and characterized the plants with multiple mutations in E2F family genes, and showed that main role of plant E2F may be negatively regulating cell proliferation through repressing S phase genes. By our genome-wide identification of target loci in Arabidopsis, we revealed that binding sites of E2FA, E2FB, E2FC, RBR and MYB3R3 are all frequently coincided with each other throughout the whole genome, suggesting formation of the large protein complex associating with the target genes.

Academic Significance and Societal Importance of the Research Achievements

植物におけるE2Fの主な機能がS期遺伝子の転写抑制による細胞周期の負の制御であることを明らかにし、動物や植物において従来から考えられてきたE2Fによる正の制御は、植物ではむしろ補助的な機能であることを示した。植物細胞中のE2Fタンパク質の多くがDREAM complexを形成し、標的遺伝子の転写を抑制することにより、細胞増殖の抑制や増殖停止状態の維持に重要な働きを持つと考えられた。このように、植物の細胞周期は動物と相同なタンパク質を利用しながら、異なった仕組みにより制御されている様子が明らかになった。

Report

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

    (26 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (15 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] University of London/Aberystwyth University(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Univerity of Tubingen/University of Hamburg(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Biological Research Centre(ハンガリー)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Polish Academy of Science(ポーランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Paris-Saclay(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Londan/Aberystwyth University(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Univerity of Tubingen/University of Hamburg(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Biological Research Centre(ハンガリー)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Polish Academy of Science(ポーランド)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Paris-Saclay(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of London/Aberystwyth University(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] University of Tubingen/University of Hamburg(ドイツ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Biological Research Centre(ハンガリー)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Polish Academy of Science(ポーランド)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] University of Paris-Saclay/IBMP-CNRS(フランス)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Transcriptional profiling identifies critical steps of cell cycle reprogramming necessary for Plasmodiophora brassicae ‐driven gall formation in Arabidopsis2019

    • Author(s)
      Olszak Marcin、Truman William、Stefanowicz Karolina、Sliwinska Elwira、Ito Masaki、Walerowski Piotr、Rolfe Stephen、Malinowski Robert
    • Journal Title

      The Plant Journal

      Volume: 97 Issue: 4 Pages: 715-729

    • DOI

      10.1111/tpj.14156

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Developmental analysis of the early steps in strigolactone‐mediated axillary bud dormancy in rice2019

    • Author(s)
      Luo Le、Takahashi Megumu、Kameoka Hiromu、Qin Ruyi、Shiga Toshihide、Kanno Yuri、Seo Mitsunori、Ito Masaki、Xu Guohua、Kyozuka Junko
    • Journal Title

      The Plant Journal

      Volume: 97 Issue: 6 Pages: 1006-1021

    • DOI

      10.1111/tpj.14266

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Arabidopsis R1R2R3-Myb proteins are essential for inhibiting cell division in response to DNA damage2017

    • Author(s)
      Chen Poyu、Takatsuka Hirotomo、Takahashi Naoki、Kurata Rie、Fukao Yoichiro、Kobayashi Kosuke、Ito Masaki、Umeda Masaaki
    • Journal Title

      Nature Communications

      Volume: 8 Issue: 1 Pages: 635-635

    • DOI

      10.1038/s41467-017-00676-4

    • NAID

      120006354238

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Autocrine regulation of stomatal differentiation potential by EPF1 and ERECTALIKE1 ligand-receptor signaling.2017

    • Author(s)
      Qi, X., Han, S.K., Dang, J.H., Garrick, J.M., Ito, M., Hofstetter, A.K., Torii, K.U.
    • Journal Title

      Elife

      Volume: 6 Pages: 24012-24012

    • DOI

      10.7554/elife.24102

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] サイトカイニン情報伝達を介した肥厚成長の活性化機構の解明2020

    • Author(s)
      今村美友,光田展隆,近藤侑貴,高木優,伊藤正樹,山篠貴史
    • Organizer
      第61回日本植物生理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] メリステムにおける適切な細胞周期制御に必要な新奇GRAS型転写因子E1Mの機能解析2019

    • Author(s)
      野本友司,野田理江子,鈴木俊哉,鈴木孝征,前尾健一郎,伊藤正樹
    • Organizer
      第60回日本植物生理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Functional analysis of a novel GRAS-type transcription factor E1M required for proper cell cycle regulation in meristem2019

    • Author(s)
      Yuji Nomoto, Rieko Noda, Toshiya Suzuki, Takamasa Suzuki, Kenichiro Maeo, Masaki Ito
    • Organizer
      Japan-Taiwan Plant Biology 2019 (JTPB2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Finding new targets for genome-editing system toward improved plant production.2018

    • Author(s)
      Ito, M.
    • Organizer
      The 2nd Workshop on Plant Genetic Engineering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 細胞の数とサイズの適切な維持に関わるGRAS及びAP2型転写因子の解析2018

    • Author(s)
      野本友司、鈴木俊哉、鈴木孝征、伊藤正樹
    • Organizer
      第57回日本植物生理学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] GRASファミリー転写因子E1MとAP2型転写因子AtSMOS1の相互作用を介した細胞サイズの制御2018

    • Author(s)
      野田理江子、野本友司、鈴木俊哉、伊藤正樹
    • Organizer
      第57回日本植物生理学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 細胞分裂実行因子の発現制御 ~植物の一生を通じて働く転写因子複合体~2017

    • Author(s)
      伊藤正樹
    • Organizer
      日本植物学会第81回大会
    • Related Report
      2017 Annual Research Report
    • Invited

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Published: 2017-04-28   Modified: 2021-02-19  

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