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Physiological analysis of pericarp dehiscence mechanism involved in yield

Research Project

Project/Area Number 17H03754
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Crop production science
Research InstitutionHokkaido University

Principal Investigator

Fujino Kaien  北海道大学, 農学研究院, 准教授 (80229020)

Co-Investigator(Kenkyū-buntansha) 森下 敏和  国立研究開発法人農業・食品産業技術総合研究機構, 次世代作物開発研究センター, 場長 (30414949)
山田 哲也  北海道大学, 農学研究院, 講師 (70374618)
津釜 大侑  北海道大学, 農学研究院, 助教 (10726061)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2019: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Keywords果皮 / ダッタンソバ / ダイズ / 裂莢 / 裂皮 / AGAMOUS / 裂莢性 / 食用作物
Outline of Final Research Achievements

Tartary buckwheat cultivars that allow easy dehulling are called rice-type cultivars. The rice and non-rice hull types are determined by a single gene, but this gene is unclear. Here, I show that cells underneath the epidermis in the proximity of ovary midribs undergo periclinal cell divisions in non-rice-type cultivars but do not in a rice-type cultivar. The cells that arose from the periclinal cell divisions later underwent lignification, which should increase mechanical strength of hulls. In RNA sequencing, a partial mRNA of an AGAMOUS ortholog in Tartary buckwheat (FtAG) was found to be absent in the rice-type cultivar. By RNA sequencing and linkage analysis, we also show that FtAG is a candidate for the gene that promotes differentiation of the cells undergoing the periclinal cell divisions and that thereby determines the RT and NT phenotypes in Tartary buckwheat.

Academic Significance and Societal Importance of the Research Achievements

ダッタンソバは機能性成分であるルチンをフツウソバの100倍以上含有しており、近年食味も改善され機能性食品として高い評価を得ている。しかしながら、ダッタンソバのそば殻は剥けにくく、製粉時の収量の低下や雑菌の混入による品質の低下をまねいている。ダッタンソバの果皮が薄く剥けやすくなる原因遺伝子を本研究で特定したことにより、育種の遺伝子マーカーとしての利用が可能となり、加工特性が向上した新たな品種の育成に貢献するものである。

Report

(4 results)
  • 2020 Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (7 results)

All 2021 2020 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (6 results)

  • [Journal Article] A putative AGAMOUS ortholog is a candidate for the gene determining ease of dehulling in Tartary buckwheat (Fagopyrum tataricum)2020

    • Author(s)
      Yuka Fukuie, Hana Shimoyama, Toshikazu Morishita, Daisuke Tsugama, Kaien Fujino
    • Journal Title

      Planta

      Volume: 251 Issue: 4 Pages: 85-85

    • DOI

      10.1007/s00425-020-03374-6

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] A putative AGAMOUS ortholog is a candidate for the gene determining pericarp phenotype in Tartary buckwheat2021

    • Author(s)
      Yuka Fukuie, Hana Shimoyama, Toshikazu Morishita, Daisuke Tsugama, Kaien Fujino.
    • Organizer
      日本植物生理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] A putative AGAMOUS ortholog is a candidate for the gene determining ease of pericarp removal in Tartary buckwheat2020

    • Author(s)
      Yuka Fukuie, Hana Shimoyama, Toshikazu Morishita, Daisuke Tsugama, Kaien Fujino.
    • Organizer
      日本植物生理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 次世代シークエンサーを用いたダッタンソバ果皮形質に関する遺伝子解析2019

    • Author(s)
      福家優花, 津釜大侑, 下山花, 森下敏和, 藤野介延
    • Organizer
      日本育種学会
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Presentation] ダッタンソバの果皮のむけやすさを決定する遺伝子の候補の解析2019

    • Author(s)
      福家優花, 津釜大侑, 下山花, 森下敏和, 藤野介延
    • Organizer
      日本作物学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ダッタンソバ果皮形成に関わる遺伝子解析2018

    • Author(s)
      福家優花、下山花、津釜大侑、森下敏和、藤野介延
    • Organizer
      日本作物学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ダッタンソバの葯培養の検討2017

    • Author(s)
      下山花、津釜大侑、森下敏和、藤野介延
    • Organizer
      日本作物学会
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2022-01-27  

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