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Elucidation of Molecular Mechanisms of Environmental Acceptance in Rice Differentiating Above- and Belowground Parts and Its Application to Plant Breeding

Research Project

Project/Area Number 18K05578
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39010:Science in plant genetics and breeding-related
Research InstitutionOsaka Prefecture University

Principal Investigator

YOKOI SHUJI  大阪府立大学, 生命環境科学研究科, 教授 (80346311)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords相転移 / イネ / 地上部・地下部 / 野生イネ / 栄養生長期 / 温度 / 地上部と地下部 / 環境ストレス / 遠縁交雑 / 生殖隔離 / ストレス / 環境受容 / 出穂(開花) / 分子メカニズム / 環境需要
Outline of Final Research Achievements

When rice varieties were grown at various water temperatures during the vegetative stage and the seeds obtained the following year were grown at constant water temperature, the seeds grown at lower temperatures the previous year had fewer leaves and emerged earlier than those grown at higher temperatures, suggesting epigenetic inheritance, in which the memory of the previous generation's growing environment is passed on to the next generation. This suggests epigenetic inheritance of the memory of the previous generation's cultivation environment to the next generation. The results suggest that rice genetically regulates the phase transition during vegetative growth, and that environmental signals such as daylength at the surface are more potent in regulating the phase transition than environmental signals such as temperature at the subsurface.

Academic Significance and Societal Importance of the Research Achievements

本研究では、イネの相転移は地上部と地下部の環境要因を区別して受容され,。特に地上部の環境を受容して記憶する可能性が高いことが示された。この研究は、相転移経路の基盤となるメカニズムは、通常状態でもストレス下でもイネの地上部(主に葉)と地下部(主に茎頂や根)を区別しながら巧に行われる反応である事が示された。この成果はオリジナルの品種の塩基配列を変化させることなくストレス耐性の付与を行えるもので有り,ブランド品種の栽培地域を拡大したり,時期を変化させて収量調整を可能にする技術につながる結果である。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (13 results)

All 2021 2020 2019 2018 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (5 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Temperature-dependent sugar accumulation in interspecific Capsicum F1 plants showing hybrid weakness.2021

    • Author(s)
      Shiragaki K, Furukawa H, Yokoi S, Tezuka T
    • Journal Title

      Journal of Plant Research

      Volume: 134 Issue: 6 Pages: 1199-1211

    • DOI

      10.1007/s10265-021-01340-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A hypersensitive response-like reaction is involved in hybrid dwarfism in F1 plants of the cross Capsicum annuum × Capsicum chinense.2020

    • Author(s)
      Kumpei Shiragaki, Shuji Yokoi and Takahiro Tezuka
    • Journal Title

      Breeding Science

      Volume: 70 Issue: 4 Pages: 430-437

    • DOI

      10.1270/jsbbs.19137

    • NAID

      130007895837

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A high maternal genome excess causes severe seed abortion leading to ovary abscission in Nicotiana interploidy-interspecific crosses.2020

    • Author(s)
      He H, Yokoi S, Tezuka T
    • Journal Title

      Plant Direct

      Volume: 4 Issue: 8

    • DOI

      10.1002/pld3.257

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Morphological changes during juvenile-to-adult phase transition in sorghum.2019

    • Author(s)
      Hashimoto S, Tezuka T and Yokoi S
    • Journal Title

      Planta

      Volume: 250 Issue: 5 Pages: 1557-1566

    • DOI

      10.1007/s00425-019-03251-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Transgenerational effect of maternal growth environment on flowering date in rice (Oryza sativa L.)2018

    • Author(s)
      Koumoto T, Aoki N, Hamasaki T, Shiga S, Yokoi S and *Shimono H
    • Journal Title

      Environmental and Experimental Botany

      Volume: 155 Pages: 307-312

    • DOI

      10.1016/j.envexpbot.2018.07.010

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] オリザノール含量を規定する候補因子の探索2020

    • Author(s)
      船越 孝之・桧原 健一郎・小川 拓水・手塚 孝弘・太田 大策・横井 修司
    • Organizer
      第137回日本育種学会
    • Related Report
      2020 Research-status Report 2019 Research-status Report
  • [Presentation] イネコアコレクションを用いた栄養生長期の相転移因子の解析2020

    • Author(s)
      山本 真璃・手塚 孝弘・横井 修司
    • Organizer
      第137回日本育種学会
    • Related Report
      2020 Research-status Report 2019 Research-status Report
  • [Presentation] イネコアコレクションを用いた γ-オリザノール含量に相関のある因子の形態学的・分子遺伝学的解析2019

    • Author(s)
      船越 孝之・小川 拓水・手塚 孝弘・太田 大策・横井 修司
    • Organizer
      第136回日本育種学会
    • Related Report
      2019 Research-status Report
  • [Presentation] ソルガムにおけるjuvenile-to-adult相転換について2019

    • Author(s)
      橋本 舜平・手塚 孝弘・横井 修司
    • Organizer
      第135回日本育種学会
    • Related Report
      2018 Research-status Report
  • [Presentation] ソルガムにおける夜低温誘導型開花にはSbPRR37が関与する2019

    • Author(s)
      橋本 舜平・手塚 孝弘・横井 修司
    • Organizer
      第60回日本植物生理学会
    • Related Report
      2018 Research-status Report
  • [Remarks] 大阪府立大学植物育種繁殖学研究グループ

    • URL

      https://shyokoi.wixsite.com/plantbreeding

    • Related Report
      2021 Annual Research Report
  • [Remarks] 大阪府立大学生命環境科学研究科植物育種繁殖学研究グループ

    • URL

      https://shyokoi.wixsite.com/plantbreeding

    • Related Report
      2020 Research-status Report 2019 Research-status Report 2018 Research-status Report
  • [Patent(Industrial Property Rights)] いとさい1号2021

    • Inventor(s)
      農研機構,岩手大学(うち一名は現大阪府立大学),サカタのタネ
    • Industrial Property Rights Holder
      農研機構,岩手大学(うち一名は現大阪府立大学),サカタのタネ
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Acquisition Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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