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Identification of loci associated with fluctuation in pungency of Shishito (Capsicum annuum) using a mutant induced by ion beamon in Shishito pepper

Research Project

Project/Area Number 18K05627
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39030:Horticultural science-related
Research InstitutionIshikawa Prefectural University

Principal Investigator

Murakami Kenji  石川県立大学, 生物資源環境学部, 教授 (40200266)

Co-Investigator(Kenkyū-buntansha) 細川 宗孝  近畿大学, 農学部, 教授 (40301246)
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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords果実発育 / 辛味成分 / カプサイシノイド生成 / 単為結果 / カプサイシノイド / 胎座 / フェノタイピング / 次世代シーケンサー / QTLシーケンス / RADシーケンス
Outline of Final Research Achievements

Shishito is a group of small-fruited, less pungent varieties of Capsicum annuum. Although it is well known that shishito often produces very pungent fruit, the causes, mechanisms, and inheritance of the trait have remained unknown. In this study, we attempted to analyze the inheritance of pungent fruit development traits and the genes involved by using low-pungent mutant lines that rarely produce pungent fruit and by comparing them with the original lines and conducting crossbreeding tests. The results of this study revealed that pungent fruit development is strongly related to the suppression of fruit development, and that the trait that produces pungent fruit is almost dominantly inherited. Furthermore, the segregation in the F2 population and the results of the MutMap method analysis suggested the involvement of at least two loci in the pungent fruit trait.

Academic Significance and Societal Importance of the Research Achievements

トウガラシの辛味成分は、香辛料としてはその生成増大、青果物としてはその生成抑制が課題となってきた。とくにシシトウは、辛味成分生成量がいくつかの要因により大きく変動する興味深い特性を持っている。本研究では、シシトウの辛味生成に果実の発育が大きく関わっていること、少なくとも2個の遺伝子座の関与を明らかにした。この成果は、香辛料あるいは青果物としてのトウガラシ生産における重要な知見となりうると考える。

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

    (2 results)

All 2022 2021

All Presentation (2 results)

  • [Presentation] 低辛味シシトウ系統における DNAマーカーを用いた病害抵抗性遺伝子の解析2022

    • Author(s)
      川上大亮・村上賢治・髙原浩之
    • Organizer
      第 74回北陸病害虫研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] シシトウの低辛味形質の遺伝2021

    • Author(s)
      村上賢治・田渕翔大・栃折真澄・細川宗孝
    • Organizer
      園芸学会
    • Related Report
      2020 Research-status Report

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

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