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Mechanism of low oxygen tolerance in Azorhizobium caulinodans

Research Project

Project/Area Number 23780061
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Plant nutrition/Soil science
Research InstitutionThe University of Tokyo

Principal Investigator

AONO Toshihiro  東京大学, 生物生産工学研究センター, 助教 (10372418)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords窒素固定細菌 / 根粒菌
Research Abstract

Azorhizobium caulinodans is a microsymbiont of a tropical legume, Sesbania rostrata, and forms nitrogen fixing nodules on the stems. In this study, it was revealed that ocmA gene, which was predicted to encode an inner membrane protein, was related to production of exopolysaccharides in A. caulinodans. It was also revealed that Lon protease was involved in production of exopolysaccharides. Furthermore, Lon protease was found to be involved in suppression of reb genes, which is related to killer trait of this bacterium.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (8 results)

All 2012

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (5 results)

  • [Journal Article] Lon protease of Azorhizobium caulinodans ORS571 is required for the suppression of reb gene expression.2012

    • Author(s)
      Nakajima A, Aono T, Tsukada S, Siarot LL, Ogawa T, Oyaizu H
    • Journal Title

      Applied and Environmental Microbiology

      Volume: 78 (19) Pages: 6251-6261

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] NAD(P)+-malic enzyme mutants of Sinorhizobium sp. strain NGR234, but not Azorhizobium caulinodans ORS571, maintain symbiotic N2 fixation capabilities.2012

    • Author(s)
      Zhang Y, Aono T, Poole P, Finan TM
    • Journal Title

      Applied and Environmental Microbiology

      Volume: 78 (8) Pages: 2803-2812

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Lon protease of Azorhizobium caulinodans ORS571 is required for the suppression of reb gene expression2012

    • Author(s)
      Nakajima Azusa
    • Journal Title

      Applied and Environmental Microbiology

      Volume: 78 Issue: 17 Pages: 6251-6261

    • DOI

      10.1128/aem.01039-12

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] Azorhizobium caulinodansのLonプロテアーゼはreb遺伝子群の発現抑制に関与している2012

    • Author(s)
      中島梓、青野俊裕、塚田周平、LowelaSiarot、小川哲弘、小柳津広志
    • Organizer
      日本土壌肥料学会
    • Place of Presentation
      鳥取
    • Year and Date
      2012-09-04
    • Related Report
      2012 Final Research Report
  • [Presentation] Lon protease of Azorhizobium caulinodans is required forthe suppression of reb gene expression2012

    • Author(s)
      Nakajima A., Aono T., Tsukuda S, Siarot L.L, Ogawa T, Oyaizu H
    • Organizer
      XV International Congress on Plant-Microbe Interactions.
    • Place of Presentation
      京都
    • Year and Date
      2012-07-30
    • Related Report
      2012 Final Research Report
  • [Presentation] The role of potassium transport systems of Azorhizobium caulinodans2012

    • Author(s)
      Siarot, L. Toyazaki, H. and Aono, T.
    • Organizer
      2nd Asian Conference in Plant-Microbe Symbiosis and Nitrogen Fixation.
    • Place of Presentation
      プーケット・タイ
    • Related Report
      2012 Final Research Report
  • [Presentation] Lon protease of Azorhizobium caulinodans is required for the suppression of reb gene expression2012

    • Author(s)
      Nakajima Azusa
    • Organizer
      XV International Congress on Plant-Microbe Interactions
    • Place of Presentation
      Kyoto International Conference Center
    • Related Report
      2012 Annual Research Report
  • [Presentation] Azorhizobium caulinodansのLonプロテアーゼはreb遺伝子群の発現抑制に関与している2012

    • Author(s)
      中島梓
    • Organizer
      日本土壌肥料学会
    • Place of Presentation
      鳥取大学
    • Related Report
      2012 Annual Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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