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

Cloning of the responsible genes complementary for clubroot resistance and improving of the resistance breeding base

Research Project

Project/Area Number 18K05568
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39010:Science in plant genetics and breeding-related
Research InstitutionIwate University

Principal Investigator

Hatakeyama Katsunori  岩手大学, 農学部, 准教授 (60355625)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords病害抵抗性遺伝子 / ハクサイ / 根こぶ病 / 形質転換 / 根こぶ病抵抗性 / Brassica rapa / 病害抵抗性 / Crr1 / 抵抗性遺伝子
Outline of Final Research Achievements

Brassica rapa clubroot resistance locus, Crr1b, confers resistance only in combination with another locus, Crr2, and each locus has two candidate ORFs. To identify the responsible genes for each locus, we produced transgenic Arabidopsis harboring a single ORF and crossed with each line to stack ORFs. We found that necrosis caused by autoimmunity was found in the transgenic lines harboring two ORFs from Crr1b. We produced the stacking line harboring two ORFs from Crr1b and one of ORFs from Crr2, and inoculated clubroot isolates. All the stacking line showed necrosis and did not show clear resistance to clubroot. These results suggests that two ORFs of Crr1b work in pairs and introgression of B.rapa genes to Arabidopsis background would results in NLR mis-regulation and autoimmunity.

Academic Significance and Societal Importance of the Research Achievements

病害抵抗性の向上は品種改良において重要な目標の一つである。本研究では、ハクサイの根こぶ病抵抗性遺伝子座Crr1bに存在する2つのNLR遺伝子をシロイヌナズナに導入すると過敏感反応が誘導されることが明らかになった。これらのNLR遺伝子はシロイヌナズナには存在せず、ハクサイが新たに獲得した遺伝子であると考えられる。本研究で得られた結果は、NLR遺伝子の進化を理解する上で重要な知見となる。また、Crr1bの2つのNLR遺伝子がペアで機能する可能性を示唆する知見が得られた。これらの知見は、DNA情報を利用した効率的な選抜技術の開発に有用であると考えられる。

Report

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

    (6 results)

All 2021 2020 2019 2018

All Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] ハクサイ根こぶ病抵抗性遺伝子Crr1bの候補ORFを集積したシロイヌナズナにおける過敏感反応の誘導2021

    • Author(s)
      秋田谷茉那,清水元樹,高橋美紗子,松元哲,殿崎薫,畠山勝徳
    • Organizer
      日本育種学会第139回講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 根こぶ病抵抗性遺伝子 Crr1b 候補 ORF の集積による過敏感反応様形質の誘導2020

    • Author(s)
      秋田谷茉那, 高橋美紗子, 松元哲, 殿崎薫, 畠山勝徳
    • Organizer
      第15回東北育種研究集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 根こぶ病抵抗性遺伝子座Crr1bの候補ORF集積系統における致死表現型2019

    • Author(s)
      秋田谷 茉那, 高橋 美紗子, 松元 哲, 高畑 義人, 畠山 勝徳
    • Organizer
      第14回東北育種研究集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Molecular genetics of the clubroot resistant genes in Chinese cabbage (Brassica rapa L.).2018

    • Author(s)
      Hatakeyam, K.
    • Organizer
      2018 International clubroot workshop
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular cloning and utilization of the clubroot resistant genes in Chinese cabbage2018

    • Author(s)
      Hatakeyama, K., Takahashi, M., Takahata, Y., Matsumoto, S.
    • Organizer
      The 3rd International symposium on innovations in plant food sciences
    • Related Report
      2018 Research-status Report
  • [Presentation] 根こぶ病抵抗性遺伝子Crr1b, Crr2候補ORF導入シロイヌナズナの解析2018

    • Author(s)
      秋田谷茉那,高橋美紗子,湯澤彰太,松元 哲,高畑義人,畠山勝徳
    • Organizer
      第13回東北育種研究集会
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi