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Systemic regulation of symbiotic nitrogen fixation by a signal compound transported via vascular bundles

Research Project

Project/Area Number 15K07103
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plant molecular biology/Plant physiology
Research InstitutionAichi University of Education

Principal Investigator

SUGANUMA Norio  愛知教育大学, その他部局等, 理事・副学長 (40179114)

Project Period (FY) 2015-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsマメ科植物 / 根粒菌 / 共生 / 根粒 / 窒素固定 / 変異体 / ミヤコグサ / 遺伝子
Outline of Final Research Achievements

A one of Lotus japonicus Fix- mutants, syp71 in which SYP71 gene coding for a SNARE protein is mutated, was analyzed to reveal a systemic signal compound transported from the shoot to the root via vascular bundles that controls nitrogen fixation activity of rhizobia in the nodules. Daidzein was appeared to be significantly effective for recovering weights of plants as well as nodules depressed in the syp71 mutant. In addition, analysis of a Lotus japonicus mutant uncovered that a nucleoporin GLE1 is involved in symbiotic association with rhizobia.

Academic Significance and Societal Importance of the Research Achievements

20世紀初頭に人工的に窒素肥料を合成することが可能になり、食糧生産は増大し、安定して収量を確保できるようになった。しかし、人工的に窒素肥料を合成するために、多大の化石エネルギーが消費される。また、施肥された窒素肥料は海洋の富栄養化の一因となっている。マメ科植物と根粒菌の共生窒素固定作用は、こうした窒素肥料がもたらす課題を解決し、持続可能な環境保全型の作物生産を実現するために利用価値の高い生物的機能である。本研究は、そのための基盤となる学術的な知見を提供するものである。

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (4 results)

All 2020 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] The Lotus japonicus nucleoporin GLE1 is involved in symbiotic association with rhizobia2020

    • Author(s)
      Imai A, Ohtani M, Nara A, Tsukakoshi A, Narita A, Hirakawa H, Sato S, Suganuma N
    • Journal Title

      Physiologia Plantarum

      Volume: 168 Issue: 3 Pages: 590-600

    • DOI

      10.1111/ppl.12996

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Function and evolution of a Lotus japonicas AP2/ERF family transcription factor that is required for development of infection threads2017

    • Author(s)
      Yano K, Aoki S, Liu M, Umehara Y, Suganuma N, Iwasaki W, Sato S, Soyano T, Kouchi H, Kawaguchi M
    • Journal Title

      DNA Research

      Volume: 印刷中 Pages: 193-203

    • DOI

      10.1093/dnares/dsw052

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] マメ科植物の窒素固定関連遺伝子 SEN1 の多型と表現型2018

    • Author(s)
      鈴木章弘、江上由佳、河野里実、中尾隆寛、千々岩 諒汰、中島菜摘、原田克哉、河済英紀、渡邊啓史、穴井豊昭、有馬進、菅沼教生
    • Organizer
      第28回植物微生物研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] マメ科植物における窒素固定関連遺伝子SEN1の多型と表現型2018

    • Author(s)
      鈴木章弘、江上由佳、河野里実、中尾隆寛、千々岩諒汰、中島菜摘、原田克哉、河濟英紀、渡邊啓史、穴井豊昭、菅沼教生、有馬進
    • Organizer
      日本作物学会
    • Related Report
      2017 Research-status Report

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Published: 2015-04-16   Modified: 2021-02-19  

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