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Study of the Biological Effect of Soil Sterilization on The Radioactive Cesium Transfer to Plants

Research Project

Project/Area Number 16K00600
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Modeling and technologies for environmental conservation and remediation
Research InstitutionKyoto University

Principal Investigator

KINOUCHI Tadatoshi  京都大学, 複合原子力科学研究所, 講師 (90301457)

Co-Investigator(Kenkyū-buntansha) 小林 優  京都大学, 農学研究科, 准教授 (60281101)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords放射性セシウム / ファイトレメディエーション / 土壌汚染 / 藻類 / 除染 / 土壌滅菌
Outline of Final Research Achievements

Bioremediation (BRM) is expected as a decontamination measure for soil contaminated with radioactive cesium (Cs) released by the Fukushima Daiichi Nuclear Power Plant accident. In order to investigate the effect of soil microorganisms on BRM, we cultivated the radish on sterilized contaminated soil and observed its Cs absorption rate. As a result, the Cs absorption rate of the radish increased up to 1%. Since it was suggested that Cs which had been assimilated by microorganisms became available via sterilization for uptake by the radish, an investigation was started to confirm the assimilation mode of Cs in the microorganisms. As a result, it was revealed that microalgae cultured under a wavelength range of 400-500 nm especially assimilated Cs. Therefore, it has been shown that it is possible to perform BRM efficiently under this specific wavelength.

Academic Significance and Societal Importance of the Research Achievements

バイオレメディエーション(BRM)は、農地特有の生産能力を可能な限りそのままの状態で残せる低コストの原位置浄化法として期待されているが、水耕栽培では培養液中のCsを20%程度吸収するヒマワリでさえ、実際にCs汚染した土壌で栽培すると、その吸収率は0.04%程度で、実用性が見出せなかった。我々はBRMにおける水耕栽培と土耕栽培の効率の違いの原因として土壌微生物に着目し、汚染土壌を滅菌することによってその吸収率を最大1%まで上昇させることに成功した。BRM効果が改善された理由として、結合態として土壌微生物に収着されていたCsが滅菌処理によって可給態となったことを明らかにした。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results)

  • [Journal Article] Using Experimental Transfer Factors to Estimate the Ratio between the Committed Effective Dose from Ingestion of Radio-tellurium to that of Radio-cesium Released by the Fukushima Daiichi Nuclear Power Plant Accident2018

    • Author(s)
      T. Takahashi, K. Fujiwara, T. Kinouchi, S. Fukutani, S. Takahashi
    • Journal Title

      Japanese Journal of Health Physics

      Volume: 53 Issue: 1 Pages: 12-16

    • DOI

      10.5453/jhps.53.12

    • NAID

      130007384330

    • ISSN
      0367-6110, 1884-7560
    • Related Report
      2018 Annual Research Report
  • [Journal Article] Transfer Factors of Tellurium and Cesium from Soil to Radish (<i>Raphanus sativus</i> var. <i>sativus</i>) and Komatsuna (<i>Brassica rapa</i> var. <i>perviridis</i>)2017

    • Author(s)
      K.Fujiwara, T.Takahashi, T.Kinouchi, S.Fukutani, S.Takahashi, T.Watanabe, S.Funakawa
    • Journal Title

      Japanese Journal of Health Physics

      Volume: 52 Issue: 3 Pages: 192-199

    • DOI

      10.5453/jhps.52.192

    • NAID

      130006201411

    • ISSN
      0367-6110, 1884-7560
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Isomeric Replacement of a Single Aspartic Acid Induces a Marked Change in Protein Function: The Example of Ribonuclease A2017

    • Author(s)
      Sakaue H, Kinouchi T, Fujii N, Takumi T, Fujii N.
    • Journal Title

      ACS Omega

      Volume: 2 Issue: 1 Pages: 260-267

    • DOI

      10.1021/acsomega.6b00346

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] カイコをモデルとした内部被ばくの経世代影響2018

    • Author(s)
      田中草太,木野内忠稔,高橋知之,牧大介, 納冨昭弘, 高橋千太郎
    • Organizer
      日本放射線影響学会第 61 回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 田中草太,木野内忠稔,高橋知之,牧大介, 納冨昭弘, 高橋千太郎2018

    • Author(s)
      原発事故後の昆虫類への放射線影響:カイコを利用した放射線影響評価
    • Organizer
      第62回日本応用動物昆虫学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 環境中の被ばく形態に対応した放射線影響評価:カイコを利用した放射線の内部被ばく及び外部被ばくに対する影響評価手法の探索2017

    • Author(s)
      田中草太、木野内忠稔、足達太郎、高橋知之、高橋千太郎
    • Organizer
      第61回日本応用動物昆虫学会大会
    • Place of Presentation
      東京農工大学小金井キャンパス
    • Year and Date
      2017-03-28
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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