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Elucidation of the molecular mechanism of barley inflorescence plasticity due to environmental changes

Research Project

Project/Area Number 19K15816
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

SAKUMA Shun  鳥取大学, 農学部, 助教 (40717352)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords穂形態 / 環境変動 / 表現型可塑性 / 収量 / 環境適応 / オオムギ / 条性 / 環境変化
Outline of Research at the Start

オオムギの穂は二条性と六条性に大別されるが、六条性品種の中には側列小花が不規則に退化する「不斉条」がある。不斉条を示す系統は作期の違いや年毎の環境の変動によって六条性或いは二条性に近い穂形態を示すことから,不斉条の側列小花の退化程度は可塑的である。表現型が視認できるため、環境応答性を解析する上で格好の素材と考えられるが、詳細な分子遺伝機構は明らかになっていない。本研究では不斉条遺伝子を単離し、環境に応答した穂形態の可塑性を制御する分子機構を明らかにする。本研究によりイネ科植物が示す穂の可塑性が環境適応性にどのように寄与したのかの解明につながることが期待できる。

Outline of Final Research Achievements

Barley inflorescences are mainly divided into two-rowed and six-rowed forms, and among the six-rowed varieties, there is a "labile" in which florets in the lateral spikelet irregularly degenerate. Labile barleys show spikes that are close to six-rowed or two-rowed due to differences in cropping season and annual environmental changes, so they are good material for analyzing environmental responsiveness. However, little is known about the molecular mechanism. Therefore, the aim of this study was to isolate the labile spike gene and clarify the molecular mechanism that controls the plasticity of the spike morphology in response to the environment. We have succeeded in the whole-genome mapping of the gene that controls labile spikes using near-isogenic lines and a core collection. Environmental factors affecting trait expression were identified by hydroponics under various nutritional conditions.

Academic Significance and Societal Importance of the Research Achievements

地球規模の温暖化が顕在化しつつある今日、作物の安定生産の確保は喫緊の課題である。本研究により、オオムギの穂形質を制御する不斉条遺伝子の座乗する位置及び候補遺伝子が明らかになった。また、この遺伝子の発現を制御する環境因子候補も同定することができた。今後、不斉条遺伝子の原因分子を単離することで穂の形質可塑性に関する基礎的知見が得られる。こうした知見の集積により収量安定性の向上に資する育種技術の開発が期待できる。

Report

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

    (33 results)

All 2022 2021 2020 2019 Other

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

  • [Int'l Joint Research] IPK(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] SAAS(中国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] IPK(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] IPK(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Journal Article] 麦の花序構造を決める遺伝子2022

    • Author(s)
      佐久間俊
    • Journal Title

      植調

      Volume: 55 Pages: 13-15

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Dosage of duplicated and antifunctionalized homeobox proteins influences spikelet development in barley2021

    • Author(s)
      V. Thirulogachandar, G. Govind, S. Kale, M. Kuhlmann, L. Eschen-Lippold, G. Hensel, T. Rutten, R. Koppolu, J. Rajaraman, P. Sudhakar Reddy, C. Seiler, S. Sakuma, M. Jayakodi, J. Lee, D. Scheel, J. Kumlehn, T. Komatsuda, T. Schnurbusch, N. Sreenivasulu
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2021.11.08.467769

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Genome-wide identification of loci modifying spike-branching in tetraploid wheat2021

    • Author(s)
      Wolde Gizaw M.、Schreiber Mona、Trautewig Corinna、Himmelbach Axel、Sakuma Shun、Mascher Martin、Schnurbusch Thorsten
    • Journal Title

      Theoretical and Applied Genetics

      Volume: 134 Issue: 7 Pages: 1925-1943

    • DOI

      10.1007/s00122-020-03743-5

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] コムギの穀粒数を制御する遺伝子2021

    • Author(s)
      佐久間俊
    • Journal Title

      アグリバイオ

      Volume: 5 Pages: 64-66

    • NAID

      40022785747

    • Related Report
      2021 Annual Research Report
  • [Journal Article] International Workshop—Leveraging evolution into molecular breeding2020

    • Author(s)
      Sakuma Shun、Komatsuda Takao
    • Journal Title

      Breeding Research

      Volume: 22 Issue: 1 Pages: 83-86

    • DOI

      10.1270/jsbbr.22.W04

    • NAID

      130007869253

    • ISSN
      1344-7629, 1348-1290
    • Year and Date
      2020-06-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] オオムギ穂の多様性を制御する遺伝的基盤2020

    • Author(s)
      佐久間俊
    • Journal Title

      アグリバイオ

      Volume: 7 Pages: 88-90

    • NAID

      40022337847

    • Related Report
      2020 Research-status Report
  • [Journal Article] オオムギの穂のかたちを決める遺伝子2020

    • Author(s)
      佐久間俊
    • Journal Title

      アグリバイオ

      Volume: 4 Pages: 45-47

    • NAID

      40022290298

    • Related Report
      2020 Research-status Report
  • [Journal Article] 麦の穂のかたちを決める遺伝子2020

    • Author(s)
      佐久間俊
    • Journal Title

      化学と生物

      Volume: 58 Pages: 264-268

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Of floral fortune: tinkering with the grain yield potential of cereal crops2019

    • Author(s)
      Sakuma Shun、Schnurbusch Thorsten
    • Journal Title

      New Phytologist

      Volume: 225 Issue: 5 Pages: 1873-1882

    • DOI

      10.1111/nph.16189

    • NAID

      120006958019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 近交系ライムギと通常系統の形態⽐較2021

    • Author(s)
      森田美波・田中裕之・佐久間俊
    • Organizer
      第16回ムギ類研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] オオムギ六条性遺伝子の発現制御因子の解明2021

    • Author(s)
      中川里穂・小松田隆夫・佐久間俊
    • Organizer
      第16回ムギ類研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 自家受粉を繰り返したライムギの形態比較2021

    • Author(s)
      森田美波・田中裕之・佐久間俊
    • Organizer
      第13回中国地域育種談話会
    • Related Report
      2021 Annual Research Report
  • [Presentation] オオムギVrs1遺伝子の発現を制御する因子の同定2021

    • Author(s)
      中川里穂・佐久間俊
    • Organizer
      第13回中国地域育種談話会
    • Related Report
      2021 Annual Research Report
  • [Presentation] オリゴプローブを用いた染色体逆位の検出2021

    • Author(s)
      渡部京吾・佐久間俊・菊池真司
    • Organizer
      染色体学会第72回年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Driving force of genetic variation in barley inflorescence development2021

    • Author(s)
      Shun Sakuma
    • Organizer
      日本植物学会第85回大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ムギ類の多様性を生み出す穂形態形成メカニズムの解明2021

    • Author(s)
      佐久間俊
    • Organizer
      第1回超分野植物科学研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ムギ類における穂の多様性に関する遺伝育種学研究2021

    • Author(s)
      佐久間俊
    • Organizer
      第139回日本育種学会講演会受賞講演
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 野生オオムギの六条化が農業形質に及ぼす影響2020

    • Author(s)
      梅本宏輝・小松田隆夫・佐久間俊
    • Organizer
      第15回ムギ類研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 野生オオムギの六条化が分げつ数と種子休眠性に与える影響2020

    • Author(s)
      梅本宏輝・小松田隆夫・佐久間俊
    • Organizer
      第12回中国地域育種談話会
    • Related Report
      2020 Research-status Report
  • [Presentation] なぜオオムギ属の花序の単位は三小穂なのか2020

    • Author(s)
      佐久間俊・Martin Mascher・Jey Rajaraman・山地直樹・馬建鋒・佐藤和広・小松田隆夫・Thorsten Schnurbusch
    • Organizer
      日本植物学会第84回大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 麦類の穀粒数を制御するホメオボックス遺伝子の進化2020

    • Author(s)
      佐久間俊
    • Organizer
      第61回日本植物生理学会年会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] ホメオボックス遺伝子変異によるコムギ穀粒形質のトレードオフ2020

    • Author(s)
      六原菜穂・大西志全・神野裕信・山下陽子・田中裕之・佐久間俊
    • Organizer
      第137回日本育種学会講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Enhancing grain yield by improving floret fertility in wheat2019

    • Author(s)
      Shun Sakuma
    • Organizer
      PAG Asia
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Improving floret fertility through the mutation of a homeobox gene during wheat evolution under domestication2019

    • Author(s)
      Shun Sakuma
    • Organizer
      1st International Wheat Congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] コムギ穀粒数の増加が小麦粉品質に及ぼす影響2019

    • Author(s)
      六原菜穂・大西志全・神野裕信・山下陽子・田中裕之・佐久間俊
    • Organizer
      第14回ムギ類研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] コムギ穀粒数の増加が小麦粉品質に及ぼす影響2019

    • Author(s)
      六原菜穂・大西志全・神野裕信・山下陽子・田中裕之・佐久間俊
    • Organizer
      第11回中国地域育種談話会
    • Related Report
      2019 Research-status Report
  • [Remarks] Sakuma Lab

    • URL

      https://ssakuma4.wixsite.com/tottoritriticeae

    • Related Report
      2021 Annual Research Report
  • [Remarks]

    • URL

      http://staff.muses.tottori-u.ac.jp/ssakuma/

    • Related Report
      2019 Research-status Report
  • [Remarks]

    • URL

      https://www.facebook.com/tottoritriticeae

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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