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

Molecular mechanisms for the number and size control of flowers through the balance of proliferation, differentiation, and senescence of plant stem cells

Research Project

Project/Area Number 20H00470
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 44:Biology at cellular to organismal levels, and related fields
Research InstitutionNara Institute of Science and Technology

Principal Investigator

Ito Toshiro  奈良先端科学技術大学院大学, 先端科学技術研究科, 教授 (90517096)

Co-Investigator(Kenkyū-buntansha) 和田 七夕子  奈良先端科学技術大学院大学, 先端科学技術研究科, 助教 (50379541)
佐竹 暁子  九州大学, 理学研究院, 教授 (70506237)
白川 一  奈良先端科学技術大学院大学, 先端科学技術研究科, 助教 (70636969)
山口 暢俊  奈良先端科学技術大学院大学, 先端科学技術研究科, 准教授 (90767899)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥45,110,000 (Direct Cost: ¥34,700,000、Indirect Cost: ¥10,410,000)
Fiscal Year 2023: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2022: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2021: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2020: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Keywords発現制御 / 発生・分化 / 細胞周期 / シグナル伝達 / 幹細胞
Outline of Research at the Start

高等植物の花は、種固有の器官数をもつ一方で、サイズは環境条件によって一定幅で変動する。高等生物において器官の数やサイズを決める原理の多くは、未解明である。本研究は、花をつくる幹細胞に着目して、I) 花器官数の不変性、II) 花弁サイズの決定、III) 花の総数の決定における分子機構の解明を目指す。手法としては、環境、発生プログラムに応じた増殖・分化・老化のバランスを制御する遺伝子発現、ヒストン修飾およびホルモンシグナルを単一細胞タイプで定量的に計測する。さらに、I)-III)のシステムレベルでの理解のため、 数理モデル化する。本研究は、多細胞体における秩序形成の基本原理の理解をめざす。

Outline of Final Research Achievements

In plants, flowers exhibit a species-specific number of organs, while their size can vary within a certain range depending on environmental conditions. We discovered that the balance between proliferation, differentiation, and senescence in the floral stem cells determines the number and size of floral organs. We showed detailed quantitative analyses of the transcriptome, histone modifications, and hormone signaling. The research revealed that a bio-timer based on epigenomic modifications, which operate in a cell cycle-dependent manner, underlies the constancy of organ number. Additionally, the size of the petals is controlled by cell senescence and autophagy, regulated by jasmonic acid signaling. Moreover, the balance between proliferation and senescence in the stem cells of the flowering stem, influenced by programmed cell death driven by reactive oxygen species associated with aging, determines the total number of flowers.

Academic Significance and Societal Importance of the Research Achievements

本研究は、花器官の数とサイズを決める増殖・分化・老化の遷移をつかさどる制御系を解明した。多細胞生物における器官の数やサイズを決める原理の多くは、まったく手つかずであり、多細胞体の発生研究分野における秩序形成の基本原理の理解に貢献するものである。植物発生研究におけるこれまでの増殖と分化の二元論的解析に、細胞の一生という時間軸をとおして3つ目の老化の視点を組み合わせることで、数とサイズの決定機構の一端を明らかにすることが出来た。さらに、人類の主食である穀物は花の産物である。本研究は、変動地球環境下において、花の産物である穀物類を安定的に供給し続けるための基盤技術の創出につながっている。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (37 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (19 results) (of which Int'l Joint Research: 12 results,  Peer Reviewed: 19 results,  Open Access: 17 results) Presentation (9 results) (of which Int'l Joint Research: 3 results) Book (4 results) Remarks (3 results)

  • [Int'l Joint Research] 南京大学(中国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] 南京大学(中国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Petal abscission is promoted by jasmonic acid-induced autophagy at Arabidopsis petal bases2024

    • Author(s)
      Furuta Yuki、Yamamoto Haruka、Hirakawa Takeshi、Uemura Akira、Pelayo Margaret Anne、Iimura Hideaki、Katagiri Naoya、Takeda-Kamiya Noriko、Kumaishi Kie、Shirakawa Makoto、Ishiguro Sumie、Ichihashi Yasunori、Suzuki Takamasa、Goh Tatsuaki、Toyooka Kiminori、Ito Toshiro、Yamaguchi Nobutoshi
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1 Pages: 1098-1098

    • DOI

      10.1038/s41467-024-45371-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] AGAMOUS regulates various target genes via cell cycle?coupled H3K27me3 dilution in floral meristems and stamens2023

    • Author(s)
      Pelayo Margaret Anne、Morishita Fumi、Sawada Haruka、Matsushita Kasumi、Iimura Hideaki、He Zemiao、Looi Liang Sheng、Katagiri Naoya、Nagamori Asumi、Suzuki Takamasa、?irl Marek、Soukup Ale?、Satake Akiko、Ito Toshiro、Yamaguchi Nobutoshi
    • Journal Title

      The Plant Cell

      Volume: - Issue: 8 Pages: 2821-2847

    • DOI

      10.1093/plcell/koad123

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transcriptional Regulators of Plant Adaptation to Heat Stress2023

    • Author(s)
      Wang Xuejing、Tan Nicholas Wui Kiat、Chung Fong Yi、Yamaguchi Nobutoshi、Gan Eng-Seng、Ito Toshiro
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 17 Pages: 13297-13297

    • DOI

      10.3390/ijms241713297

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Single-Cell RNA Sequencing of Arabidopsis Leaf Tissues Identifies Multiple Specialized Cell Types: Idioblast Myrosin Cells and Potential Glucosinolate-Producing Cells2022

    • Author(s)
      Maeda Taro、Sugano Shigeo S、Shirakawa Makoto、Sagara Mayu、Ito Toshiro、Kondo Satoshi、Nagano Atsushi J
    • Journal Title

      Plant and Cell Physiology

      Volume: 64 Issue: 2 Pages: 234-247

    • DOI

      10.1093/pcp/pcac167

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Histone Demethylases JMJ30 and JMJ32 Modulate the Speed of Vernalization Through the Activation of FLOWERING LOCUS C in Arabidopsis thaliana2022

    • Author(s)
      Maruoka Takashi、Gan Eng-Seng、Otsuka Nana、Shirakawa Makoto、Ito Toshiro
    • Journal Title

      Frontiers in Plant Science

      Volume: 13

    • DOI

      10.3389/fpls.2022.837831

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Overexpression of AHL9 accelerates leaf senescence in Arabidopsis thaliana2022

    • Author(s)
      Zhou Yusen、Zhang Xiaomin、Chen Jing、Guo Xiaopeng、Wang Hongyan、Zhen Weibo、Zhang Junli、Hu Zhubing、Zhang Xuebing、Botella Jose Ramon、Ito Toshiro、Guo Siyi
    • Journal Title

      BMC Plant Biology

      Volume: 22 Issue: 1

    • DOI

      10.1186/s12870-022-03622-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Arrest, Senescence and Death of Shoot Apical Stem Cells in Arabidopsis thaliana2022

    • Author(s)
      Wang Yukun、Shirakawa Makoto、Ito Toshiro
    • Journal Title

      Plant and Cell Physiology

      Volume: 64 Issue: 3 Pages: 284-290

    • DOI

      10.1093/pcp/pcac155

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamic Changes in Reactive Oxygen Species in the Shoot Apex Contribute to Stem Cell Death in Arabidopsis thaliana2022

    • Author(s)
      Wang Yukun、Shirakawa Makoto、Ito Toshiro
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 7 Pages: 3864-3864

    • DOI

      10.3390/ijms23073864

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Cell Differentiation of Idioblast Myrosin Cells: Similarities With Vascular and Guard Cells2022

    • Author(s)
      Shirakawa Makoto、Tanida Mai、Ito Toshiro
    • Journal Title

      Frontiers in Plant Science

      Volume: 12 Pages: 829541-829541

    • DOI

      10.3389/fpls.2021.829541

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Robust control of floral meristem determinacy by position-specific multifunctions of KNUCKLES2021

    • Author(s)
      Shang Erlei、Wang Xin、Li Tinghan、Guo Fengfei、Ito Toshiro、Sun Bo
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 118 Issue: 36

    • DOI

      10.1073/pnas.2102826118

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Expression profiling of H3K27me3 demethylase genes during plant development and in response to environmental stress in Arabidopsis2021

    • Author(s)
      Yamaguchi Nobutoshi、Ito Toshiro
    • Journal Title

      Plant Signaling & Behavior

      Volume: 16 Issue: 11

    • DOI

      10.1080/15592324.2021.1950445

    • NAID

      120007161275

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Homology-based interactions between small RNAs and their targets control dominance hierarchy of male determinant alleles of self-incompatibility in Arabidopsis lyrata,2021

    • Author(s)
      Kobayashi, R., Yasuda, S., Ito, T., Wada, Y., Takayama, S.
    • Journal Title

      Int. J. Mol. Sci.

      Volume: 22 Issue: 13 Pages: 6990-6990

    • DOI

      10.3390/ijms22136990

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] H3K27me3 demethylases alter HSP22 and HSP17.6C expression in response to recurring heat in Arabidopsis2021

    • Author(s)
      Yamaguchi Nobutoshi、Matsubara Satoshi、Yoshimizu Kaori、Seki Motohide、Hamada Kouta、Kamitani Mari、Kurita Yuko、Nomura Yasuyuki、Nagashima Kota、Inagaki Soichi、Suzuki Takamasa、Gan Eng-Seng、To Taiko、Kakutani Tetsuji、Nagano Atsushi J.、Satake Akiko、Ito Toshiro
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 3480-3480

    • DOI

      10.1038/s41467-021-23766-w

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] JMJ Histone Demethylases Balance H3K27me3 and H3K4me3 Levels at the HSP21 Locus during Heat Acclimation in Arabidopsis2021

    • Author(s)
      Yamaguchi Nobutoshi、Ito Toshiro
    • Journal Title

      Biomolecules

      Volume: 11 Issue: 6 Pages: 852-852

    • DOI

      10.3390/biom11060852

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Plant stem cell research is uncovering the secrets of longevity and persistent growth2021

    • Author(s)
      Umeda Masaaki、Ikeuchi Momoko、Ishikawa Masaki、Ito Toshiro、Nishihama Ryuichi、Kyozuka Junko、Torii Keiko U.、Satake Akiko、Goshima Gohta、Sakakibara Hitoshi
    • Journal Title

      The Plant Journal

      Volume: Online ahead of print Issue: 2 Pages: 1-10

    • DOI

      10.1111/tpj.15184

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] One factor, many systems: the floral homeotic protein AGAMOUS and its epigenetic regulatory mechanisms2021

    • Author(s)
      Pelayo Margaret Anne、Yamaguchi Nobutoshi、Ito Toshiro
    • Journal Title

      Current Opinion in Plant Biology

      Volume: 61 Pages: 102009-102009

    • DOI

      10.1016/j.pbi.2021.102009

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of a Devernalization Inducer by Chemical Screening Approaches in Arabidopsis thaliana2021

    • Author(s)
      Shirakawa Makoto、Morisaki Yukaho、Gan Eng-Seng、Sato Ayato、Ito Toshiro
    • Journal Title

      Frontiers in Plant Science

      Volume: 12 Pages: 634068-634068

    • DOI

      10.3389/fpls.2021.634068

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Histone Demethylases Coordinate the Antagonistic Interaction Between Abscisic Acid and Brassinosteroid Signaling in Arabidopsis2020

    • Author(s)
      Wu Jinfeng、Yan Mingli、Zhang Dawei、Zhou Dinggang、Yamaguchi Nobutoshi、Ito Toshiro
    • Journal Title

      Frontiers in Plant Science

      Volume: 11

    • DOI

      10.3389/fpls.2020.596835

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Morphological and Physiological Framework Underlying Plant Longevity in Arabidopsis thaliana2020

    • Author(s)
      Wang Yukun、Kumaishi Kie、Suzuki Takamasa、Ichihashi Yasunori、Yamaguchi Nobutoshi、Shirakawa Makoto、Ito Toshiro
    • Journal Title

      Frontiers in Plant Science

      Volume: 11 Pages: 600726-600726

    • DOI

      10.3389/fpls.2020.600726

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Erasure of Epigenetic Memory in Arabidopsis Flowering Control2023

    • Author(s)
      Toshiro Ito
    • Organizer
      The 33rd International Conference on Arabidopsis Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] From AGAMOUS to Petals: Senescence and Size Dynamics in Flowers.2023

    • Author(s)
      Toshiro Ito
    • Organizer
      2023 International Symposium on Plant Cell & Developmental Biology-Future Agriculture
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chemical manipulation of epigenome towards flowering control2023

    • Author(s)
      Toshiro Ito
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シロイヌナズナの花弁脱離を制御するジャスモン酸を介したエピゲノム制御機構2022

    • Author(s)
      古田 優生, 山本 春香, 山口 暢俊, 伊藤 寿朗
    • Organizer
      第63回 日本植物生理学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 父方インプリント遺伝子欠損株における種子および胚乳発達の解析2021

    • Author(s)
      海老原 諒子, 下保 瑶己, 山田 慧士朗, 山口 翔, 山口 京, 和田 七夕子, 高山 誠司, 伊藤 寿朗
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] シロイヌナズナのNAC102転写因子による花弁脱離の制御機構の解析2021

    • Author(s)
      古田 優生, 山口 暢俊, 伊藤 寿朗
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] ケミカルバイオロジーによる植物の脱春化を促進する低分子化合物の探索とその構造2021

    • Author(s)
      福地 正弥, 白川 一, 伊藤 寿朗
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 花メリステムにおけるSUPERMANのステージ特異的下流遺伝子の解析2021

    • Author(s)
      森下 史, 山口 暢俊, 伊藤 寿朗
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 生体防御を担うミロシン細胞の分化に関わる新規転写因子WASABI MAKERの機能解析2021

    • Author(s)
      谷田 舞, 白川 一, 伊藤 寿朗
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Book] "Misexpression Approaches for the Manipulation of Flower Development," Flower Development2023

    • Author(s)
      Yifeng Xu, Eng-Seng Gan, Toshiro Ito
    • Total Pages
      23
    • Publisher
      Springer Nature
    • ISBN
      9781071632987
    • Related Report
      2023 Annual Research Report
  • [Book] "頂端分裂組織における幹細胞の分裂活性の停止と細胞死," 植物科学の最前線(BSJ-Review)2023

    • Author(s)
      白川 一, 伊藤 寿朗
    • Total Pages
      9
    • Publisher
      (公社)日本植物学会 電子出版物編集委員会
    • Related Report
      2023 Annual Research Report
  • [Book] "AGAMOUSによる花メリステムの細胞増殖停止機構," アグリバイオ2023

    • Author(s)
      古田 優生, 山口 暢俊, 伊藤 寿朗
    • Total Pages
      6
    • Publisher
      北隆館
    • Related Report
      2023 Annual Research Report
  • [Book] 化学と生物2023

    • Author(s)
      宮嶋 渚,本郷達也,伊藤寿朗,山口暢俊
    • Total Pages
      49
    • Publisher
      日本農芸化学会
    • Related Report
      2022 Annual Research Report
  • [Remarks] 奈良先端科学技術大学院大学 バイオサイエンス領域 花発生分子遺伝学研究室

    • URL

      https://bsw3.naist.jp/ito/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 挑戦的両性花原理

    • URL

      https://www.ige.tohoku.ac.jp/prg/flower/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 奈良先端科学技術大学院大学 バイオサイエンス領域 花発生分子遺伝学研究室ホームページ

    • URL

      https://bsw3.naist.jp/ito/

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi