• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of the developmental stages and genes that relates to phase transition in onion cultivars

Research Project

Project/Area Number 19K15828
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 39030:Horticultural science-related
Research InstitutionUtsunomiya University

Principal Investigator

Ikeda Hiroki  宇都宮大学, 農学部, 助教 (90782053)

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: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsタマネギ / 鱗茎肥大 / 成長相転換 / 生育ステージ / 遺伝子
Outline of Research at the Start

タマネギは可食部(鱗茎)の肥大程度が収量に直結するため、栽培する地域に最適な品種や栽培時期を選定して収量を確保する必要がある。そのため科学的根拠に裏打ちされた栽培指針を確立する必要があるが、鱗茎肥大に関する学術的知見は少ない。本研究は、これまでの研究で明らかにされていない鱗茎肥大における「植物体の生育ステージ」の重要性を証明するとともに、いくつかの主要品種において鱗茎肥大が可能となる生育ステージを明らかにする。また、鱗茎肥大を開始する前後の生育ステージで遺伝子発現を網羅的に比較し、タマネギが葉身の出葉を停止して鱗茎の肥大成長相に転換するメカニズムを遺伝子レベルで解明する。

Outline of Final Research Achievements

Onion is one of the most important vegetable crops in the world. In this study, we compared changes in plant growth and bulb development of four onion cultivars to elucidate the important developmental stages and genes that relates to phase transition in onion cultivars. A comparison of growth parameters revealed that the increase in total leaf number and area were almost inhibited in winter. In spring, these growth parameters increased rapidly from the early maturing cultivar. Since AcFT1 gene play a key role in the bulb development of cultivated onions, we conducted expression analysis of AcFT1 gene. Correlation analysis of AcFT1 gene expression and total leaf number and area was conducted, and strong positive correlations were observed. Therefore, our study genetically demonstrated that leaf number and area are important for inducing onion bulb development. We also conducted transcriptome analysis, and identified a numerous gene that may relate to the onion bulb development.

Academic Significance and Societal Importance of the Research Achievements

タマネギの鱗茎肥大について、個体レベルと遺伝子など分子レベルの双方の視点から解き明かそうとする研究は、世界的にも限られている。また、鱗茎肥大における植物体の生育ステージの重要性に関する学術的知見は少ない。本研究で遺伝子発現との関連性を解析することで、生育に関する要素の中でも、特に葉数や葉面積が重要であることが明らかとなった。また鱗茎肥大に関する新たな遺伝子も見出しており、本研究の成果は栽培管理の高度化や、新品種育成などにつながると考えられる。

Report

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

    (11 results)

All 2022 2021 2020 2019 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 2 results) Remarks (3 results)

  • [Journal Article] Expression analysis of bulb development-related genes in onion cultivars2021

    • Author(s)
      H. Ikeda, H. Tsukazaki
    • Journal Title

      Acta Horticulturae

      Volume: 1312 Issue: 1312 Pages: 31-36

    • DOI

      10.17660/actahortic.2021.1312.5

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Comparative Study on the Growth and Bulb Development of Several Onion (<i>Allium cepa</i> L.) Cultivars Sown in Spring in the Northeast Region of Japan2020

    • Author(s)
      H. Ikeda, T. Yamamoto, T. Kinoshita, H. Tsukazaki, A. Yamasaki
    • Journal Title

      The Horticulture Journal

      Volume: 89 Issue: 5 Pages: 586-592

    • DOI

      10.2503/hortj.UTD-200

    • NAID

      130007932022

    • ISSN
      2189-0102, 2189-0110
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 秋まきタマネギにおける分球の発生率と内生オーキシンの品種比較2022

    • Author(s)
      平間史保、鈴木菜月、謝 肖男、池田裕樹
    • Organizer
      園芸学会令和4年度春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] タマネギの生育および抽苔の発生に伴う花成関連遺伝子の発現変動2021

    • Author(s)
      鈴木菜月、石井貴也、池田裕樹
    • Organizer
      園芸学会令和3年度秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Expression analysis of the onion AcFT2 gene that induces flowering and bolting2021

    • Author(s)
      N. Suzuki, T. Ishii, H. Ikeda
    • Organizer
      The 17th Japan Solanaceae Consortium (JSOL2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 秋まきタマネギにおける日長反応性遺伝子の発現および生育との関係2021

    • Author(s)
      石井貴也、須藤美貴、鈴木菜月、池田裕樹
    • Organizer
      園芸学会令和3年度春季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Expression analysis of bulb development-related genes in onion cultivars2020

    • Author(s)
      H. Ikeda, H. Tsukazaki
    • Organizer
      The 3rd Asian Horticultural Congress 2020 (AHC2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] タマネギにおける日長・温度感応メカニズムに関する研究2019

    • Author(s)
      池田裕樹
    • Organizer
      園芸学会令和元年度秋季大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 宇都宮大学農学部 園芸生産技術学研究室

    • URL

      http://shigen.mine.utsunomiya-u.ac.jp/farmhort/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 宇都宮大学 研究者総覧

    • URL

      https://www.utsunomiya-u.ac.jp/activity/research/scholarlist/attached/dep4/ikeda_hiroki.php

    • Related Report
      2021 Annual Research Report
  • [Remarks] 宇都宮大学 SDGs事例集

    • URL

      https://www.utsunomiya-u.ac.jp/docs/2020SDGs-jirei_7.pdf

    • Related Report
      2021 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi