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How hydrangea create two types of flowers?

Research Project

Project/Area Number 18K14461
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

NASHIMA Kenji  日本大学, 生物資源科学部, 講師 (30779616)

Project Period (FY) 2018-04-01 – 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 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsアジサイ / 手まり咲き / 装飾花 / 形態形成 / ゲノム解読 / 変異 / DNA / NGS / RNA-seq / リシークエンス / DNAマーカー / トランスクリプトーム解析 / ドラフトゲノム / ファインマッピング
Outline of Final Research Achievements

Aiming to elucidate the control mechanism of the morphology of decorative flowers and non-decorative flowers of hydrangea, we focused on the hortensia/lace-cap phenotype of hydrangea, which has different arrangement patterns of decorative and non-decorative flowers. We performing whole-genome de novo sequencing, expression comparison by RNA sequencing, and mutation detection by whole-genome resequencing to elucidate the causative gene. Finally, a candidate causative gene was found on chromosome 4. Because all hortensia cultivars possessed only functionally deficient allele, it was considered to be promising as the causative gene.

Academic Significance and Societal Importance of the Research Achievements

本研究ではアジサイの装飾花および非装飾花の着生位置・着生数を支配する重要遺伝子候補を見出した。今後機能解析を進めることで、2種類の花の作り分け機構の解明を進めることができると期待される。また着生数・パターンを制御する遺伝子で、他の植物に対して応用することで、収量の増加や新しい形態を有する花きなどの作出が可能になるかもしれない。
研究遂行の過程で、アジサイの全ゲノム解読を完了した。今後のアジサイ研究の際に、ゲノム配列情報や遺伝子予測などが幅広く利用されることが期待される。

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

    (4 results)

All 2021 2020 2019

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

  • [Journal Article] Genome sequence of Hydrangea macrophylla and its application in analysis of the double flower phenotype2020

    • Author(s)
      Nashima Kenji、Shirasawa Kenta、Ghelfi Andrea、Hirakawa Hideki、Isobe Sachiko、Suyama Takuro、Wada Takuya、Kurokura Takeshi、Uemachi Tatuya、Azuma Mirai、Akutsu Midori、Kodama Masaharu、Nakazawa Yoshiko、Namai Kiyoshi
    • Journal Title

      DNA Research

      Volume: 28 Issue: 1 Pages: 1-10

    • DOI

      10.1093/dnares/dsaa026

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] DNA marker development for two different loci linked to double flower phenotype of Hydrangea macrophylla2021

    • Author(s)
      Nashima Kenji、Shirasawa Kenta、Hirakawa Hideki、Isobe Sachiko、Suyama Takuro、Wada Takuya、Kurokura Takeshi、Uemachi Tatuya、Azuma Mirai、Akutsu Midori、Kodama Masaharu、Nakazawa Yoshiko、Namai Kiyoshi
    • Organizer
      IV international symposium on woody ornamentals of the temperate zone
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] アジサイの全ゲノム配列解読および八重咲き性選抜DNAマーカーの開発2020

    • Author(s)
      奈島賢児・白澤健太・平川英樹・磯部祥子・巣山拓郎・和田卓也・黒倉健・ 上町達也・東未来・阿久津翠・中澤佳子・小玉雅晴・生井潔
    • Organizer
      令和2年度園芸学会春季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 八重咲き・手まり咲き遺伝子同定の試み2019

    • Author(s)
      奈島賢児
    • Organizer
      令和元年度園芸学会秋季大会内 アジサイ研究小集会
    • Related Report
      2019 Research-status Report

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

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