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Study on molecular mechanism of parthenocarpic fruit development via stimulation of pollination

Research Project

Project/Area Number 16K18633
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Science in genetics and breeding
Research InstitutionUniversity of Tsukuba

Principal Investigator

OKABE YOSHIHIRO  筑波大学, 生命環境系, 客員研究員 (30752951)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords果実発達 / トマト / 単為結果性 / 変異体 / 受粉 / 受精 / 植物ホルモン
Outline of Final Research Achievements

In this study, we investigated how parthenocarpic fruit set is occurred in two tomato mutants and identification of the responsible gene in a new mutant, to clarify the regulatory mechanism of parthenocarpic fruit set in tomato. Phenotype analysis indicated that seedless fruit is produced in association with vegetative growth caused by flavonoid deficiency. In another mutant, the result suggested that the responsible gene is a novel gene which controls parthenocarpic fruit set.

Academic Significance and Societal Importance of the Research Achievements

本研究で単離した新たな単為結果性育種素材は、単為結果性に関する研究材料としてだけけでなく、品種育成に向けた育種素材としての利用が期待される。果実発達研究のモデルとして利用されているトマトにおける単為結果性の分子機構を解明することにより、それらの知見をピーマンやメロン等の果菜類における着果率向上、応用することが可能である。また、新しい制御因子を利用した高収量品種の育種や環境変動に伴う夏期の高温下での収量性改善に寄与することが期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2019 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Remarks (1 results)

  • [Int'l Joint Research] フランス国立農学研究所(フランス)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Aberrant stamen development is associated with parthenocarpic fruit set through up-regulation of gibberellin biosynthesis in tomato2019

    • Author(s)
      Okabe Y, Yamaoka T, Ariizumi T, Ushijima K, Kojima M, Takebayashi Y, Sakakibara H, Kusano M, Shinozaki Y, Pulungan SI, Kubo Y, Nakano R, Ezura H
    • Journal Title

      Plant & Cell Physiology

      Volume: 60 Issue: 1 Pages: 38-51

    • DOI

      10.1093/pcp/pcy184

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Remarks] 蔬菜・花卉学研究室

    • URL

      http://tsukuba-olericulture.org/

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2022-01-27  

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