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Genome DNA dynamics in the transition from vegetative to reproductive growth stages

Research Project

Project/Area Number 21K06225
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44030:Plant molecular biology and physiology-related
Research InstitutionThe University of Tokyo

Principal Investigator

WATANAABE Yuichiro  東京大学, 大学院総合文化研究科, 教授 (60183125)

Co-Investigator(Kenkyū-buntansha) 阿部 光知  東京大学, 大学院総合文化研究科, 教授 (20343238)
都筑 正行  高知大学, 総合科学系生命環境医学部門, 講師 (40845616)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords成長期変換 / マイクロRNA / プロセッシング / シロイヌナズナ / ゼニゴケ / 核内顆粒 / 発現調節ゾーン / RNAプロセッシング / D-body / 生殖成長期 / 生殖成長 / 栄養成長 / 核ゲノム動態 / RNAサイレンシング
Outline of Research at the Start

生物が種を残すことは必須である。だが子孫を残すにはエネルギーやリソースを消費するため、まず個体の成長がないと生殖過程への移行が滞る。まずは植物が自力で光合成を行える一定の長さの栄養成長のステージを過ごす必要がある。成長して光合成を行い備蓄ができて初めて、次世代を残すための生殖成長を始めることができる。その成長ステージのシフトを司どる遺伝子の発現制御の仕組みとして、我々が注目する転写因子SPL-調節因子マイクロRNA156/529cによる相互調節がある。核という細胞内構造の中で、成長期の移行の前後で起こりうる関連する分子の配置、遺伝子DNAやヒストン上の目印に起こる変化を解析する。

Outline of Final Research Achievements

Plants show two different growing processes: vegetative growth, which is the process of enlarging the body, and reproductive growth, which is the process of producing reproductive cells for the next generation. It is important to regulate the timing of reproductive growth from vegetative growth in order to ensure that plants can survive and produce offspring in response to environmental changes. The molecular switch mechanism of gene expression is important for this process, and there are many unknowns about the molecular level switching mechanism. This study revealed that the sites where microRNAs, which are regulators of expression, are formed (undergo processing) are quite scattered in the nucleus. Previous reports suggested that microRNAs are localized in a few granular structures in the nuclei, but the present study clearly showed that such results of preceding reports need to be reexamined in a condition as natural as possible.

Academic Significance and Societal Importance of the Research Achievements

植物は動きがないという見方から、細胞内のダイナミクスや自分の遺伝子の発現は非常に緩慢であるように思われている傾向がある。しかし個体としては動けないが、植物の細胞レベルや自らの遺伝子の発現調節ということに目を向けると、非常にダイナミックに活動をしていることがわかる。植物細胞内で環境応答や発生の過程で見せる遺伝子発現の切り替え機構を知るには、研究解析のためであっても本来植物が行なっている状況に近づける必要があり、研究対象としたい一つのタンパク質に注目するあまり、過剰に細胞内で作らせると、細胞内で本来と異なる挙動を示す可能性が明らかとなった。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (3 results)

  • [Int'l Joint Research] アダムミツキェヴィチ大学 ポズナン(ポーランド)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Adam Michiewicz University Poznan(ポーランド)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Monash University(オーストラリア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Adam Mickiewicz University(ポーランド)

    • Related Report
      2021 Research-status Report
  • [Journal Article] ARGONAUTE1-binding Tudor domain proteins function in small interfering RNA production for RNA-directed DNA methylation2024

    • Author(s)
      Takei Takahito、Tsukada Michio、Tamura Kentaro、Hara-Nishimura Ikuko、Fukao Yoichiro、Kurihara Yukio、Matsui Minami、Saze Hidetoshi、Tsuzuki Masayuki、Watanabe Yuichiro、Hamada Takahiro
    • Journal Title

      Plant Physiology

      Volume: in press Issue: 2 Pages: 1333-1346

    • DOI

      10.1093/plphys/kiae135

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conserved and non-conserved RNA-target modules in plants: Lessons for a better understanding Marchantia development2023

    • Author(s)
      Pietrykowska, H., Alisha, A., Aggarwal, B., Watanabe,Y., Ohtani, M., Jarmolowski,A., Sierocka, I., Szweykowska-Kulinska,Z
    • Journal Title

      Plant Molecular Biology

      Volume: 113 Issue: 4-5 Pages: 121-142

    • DOI

      10.1007/s11103-023-01392-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Renaissance and Enlightenment of Marchantia as a model system2022

    • Author(s)
      Bowman, J.L., Berger,F., Briginshaw, L.N., Davies, K.M., Dierschke, T., Dolan,L., Fisher, T.J., Flores-Sandoval,E., Futagami,K., Ishizaki, K., Kato, H., Kohchi, T., Levins, J., Lin, S-S., Nishihama, R., Romani, R., Tanizawa, Y., Tsuzuki, M., Watanabe,Y., Yamato, K.T., Zachgo, S.
    • Journal Title

      The Plant Cell

      Volume: 34 Issue: 10 Pages: 3512-3542

    • DOI

      10.1093/plcell/koac219

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reinforcement of transcriptional silencing by a positive feedback between DNA methylation and non-coding transcription2021

    • Author(s)
      Rothi, M. Hafiz Tsuzuki, Masayuki Sethuraman, Shriya Wierzbicki, Andrzej T.
    • Journal Title

      Nucleic Acids Research

      Volume: 49 Issue: 17 Pages: 9799-9808

    • DOI

      10.1093/nar/gkab746

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Reevaluation of Intracellular DCL1 Localization of Wild-type and Mutant Alleles in Relevance to Functional Ability and Phenotype2023

    • Author(s)
      Hashimoto,R., Tsuzuki, M., Higashiyama ,T. and Watanabe, Y.
    • Organizer
      The 33rd International Conference on Arabidopsis Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] microRNA319標的遺伝子の進化的解析2022

    • Author(s)
      二神和敬、都筑正行、渡邊雄一郎
    • Organizer
      第63回日本植物生理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] シロイヌナズナのmiRNA生産におけるDICER-LIKE 1 C末端領域の重要性の再検証2022

    • Author(s)
      橋下梨乃、都筑正行、東山哲也、渡邊雄一郎
    • Organizer
      第63回日本植物生理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] microRNA319 標的遺伝子の進化的解析2022

    • Author(s)
      二神和敬、都筑正行、渡邊雄一郎
    • Organizer
      日本植物生理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] シロイヌナズナの miRNA 生産におけ る DICER-LIKE 1 C 末端領域の重要性 の再検証2022

    • Author(s)
      橋下梨乃、都筑正行、東山哲也、渡邊雄一郎
    • Organizer
      日本植物生理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 植物における非コード転写の機能とメカニズム2022

    • Author(s)
      都筑正行
    • Organizer
      日本植物生理学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Pervasive non-coding transcription by Pol V suggesting a genome surveillance mechanism2021

    • Author(s)
      Masayuki Tsuzuki
    • Organizer
      The 44th annual meeting of the molecular biology society of Japan
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 東京大学渡邊研究室

    • URL

      https://park.itc.u-tokyo.ac.jp/RNAwatanabe/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 東京大学大学院総合文化研究科 渡邊雄一郎研究室

    • URL

      https://park.itc.u-tokyo.ac.jp/RNAwatanabe/

    • Related Report
      2022 Research-status Report
  • [Remarks] 渡邊雄一郎研究室 HP

    • URL

      http://park.itc.u-tokyo.ac.jp/RNAwatanabe/

    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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