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Functional promotion of phytoremediation by Cucurbitaceae-plant growth promoting bacteria complex system

Research Project

Project/Area Number 19K12379
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 64020:Environmental load reduction and remediation-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

Kataoka Ryota  山梨大学, 大学院総合研究部, 准教授 (00635104)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsCucumber / endophytic bacteria / Plant growth promoting / phytoremediation / 植物内生細菌 / 植物生長促進効果 / キュウリ代謝 / 植物生育促進内生細菌 / ウリ科植物 / Curtobaerium属菌 / Microbacterium属菌 / 残留性有機汚染物質 / ファイトレメディエーション / Brevibacillus属菌 / Paenibacillus属菌 / Bacillus属菌 / 植物生育促進微生物
Outline of Research at the Start

「ウリ科植物のPOPs吸収力をウリ科植物生育促進細菌と有機酸生産菌を導入する複合微生物系で機能強化できるか?」という学術的問いを設定し、パキスタンで問題となっているDDT汚染土壌を浄化するための学術的エビデンスを得る。そのために、ウリ科植物に対する植物生育促進微生物を選抜し、促進メカニズムを解明する。そして、DDTの植物吸収に与える微生物効果をRNA-seq等の網羅的解析から検証し、微生物が関与するDDT吸収促進メカニズムを明らかにする。さらに、ウリ科植物のDDT吸収を促す方法として微生物を利用した土壌中DDTのバイオアベイラビリティー向上についても検討する。

Outline of Final Research Achievements

The diversity of endophytic bacteria in cucumber was investigated by both cultured and non-cultured methods. Certain bacteria were always present inside the cucumber, and in some cases, it has seemed to be selected by the cucumber. In addition, about 300 endophytic bacterial strains were isolated from the starks of cucumber, and the possibility of PGP was investigated. PGP selected 5 strains of the isolates that showed the better results for plant growth promotion and further investigated using pot experiments. Strains 4 and 227 showed particularly better results and were also found to increase fruit number and growth under field experiments. Although the two strains showed common PGP characteristics, metabolomics analysis suggested that the mechanism for the plant growth promoting effect was fundamentally different.

Academic Significance and Societal Importance of the Research Achievements

DDTとPCP(ペンタクロロフェノール)で汚染された土壌を植物と微生物を用いて浄化するための新しい浄化技術が提案された。つまり、土壌中に低濃度かつ広範囲に広がる汚染を効率よく効果的に除去するために植物を用いた除去(ファイトレメディエーション)に加えて植物の生育を促進する内生細菌を組み合わせることで、ファイトレメディエーションの強化を図るものである。ファイトレメディエーションを微生物で機能強化した新たな汚染物質除去技術は、ファイトレメディエーションに寄与する内生細菌の多様性解析から分離・選抜、機能解析を通じて植物‐微生物間相互関係や微生物の生存戦略などに関する興味深い知見を与えるものである。

Report

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

    (7 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] ウリ科植物と内生菌の複合系によるPOPsのバイオレメディエーション2021

    • Author(s)
      片岡 良太
    • Journal Title

      農薬環境科学研究

      Volume: 28 Pages: 19-29

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Non-target Impact of Dinotefuran and Azoxystrobin on Soil Bacterial Community and Nitrification2021

    • Author(s)
      Yamaguchi Taku、Mahmood Ahmad、Ito Takahide、Kataoka Ryota
    • Journal Title

      Bulletin of Environmental Contamination and Toxicology

      Volume: - Issue: 6 Pages: 996-1002

    • DOI

      10.1007/s00128-021-03163-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Agricultural Utilization of Unused Resources: Liquid Food Waste Material as a New Source of Plant Growth-Promoting Microbes2020

    • Author(s)
      Asghar Waleed、Kondo Shiho、Iguchi Riho、Mahmood Ahmad、Kataoka Ryota
    • Journal Title

      Agronomy

      Volume: 10 Issue: 7 Pages: 954-954

    • DOI

      10.3390/agronomy10070954

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metabolite profiling reveals a complex response of plants to application of plant growth-promoting endophytic bacteria2020

    • Author(s)
      Mahmood Ahmad、Kataoka Ryota
    • Journal Title

      Microbiological Research

      Volume: 234 Pages: 126421-126421

    • DOI

      10.1016/j.micres.2020.126421

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] The possibility of microbial degradation on the soil contaminants such as endosulfan and endosulfan sulfate2019

    • Author(s)
      Ryota Kataoka
    • Organizer
      15th Chengdu international water exhibition
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 7.Plant growth promoting endophytic bacteria confer growth promoting effect and different metabolite profiling in host plant2019

    • Author(s)
      Mahmood Ahmad, Ryota Kataoka
    • Organizer
      2019 ESAFS
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] Priming and Pretreatment of Seeds and Seedlings2019

    • Author(s)
      Mahmood Ahmad, Ryota Kataoka
    • Total Pages
      604
    • Publisher
      Springer
    • Related Report
      2019 Research-status Report

URL: 

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

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