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Effects of ionizing radiation on soil ecosystem functioning

Research Project

Project/Area Number 18710051
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Risk sciences of radiation/Chemicals
Research InstitutionNational Institute of Radiological Sciences

Principal Investigator

ISHII Nobuyoshi  National Institute of Radiological Sciences, 放射線防護研究センター, 主任研究員 (50392212)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,720,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2007: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2006: ¥2,700,000 (Direct Cost: ¥2,700,000)
Keywords放射線 / 影響 / 生態系 / 機能 / 微生物 / 群集
Research Abstract

土壌には多種多様な微生物が生息しており、生態系における栄養塩や金属元素等の物質循環に重要な役割を果たしている。それ故、農耕地において作物が収穫できるのは、これら微生物の働きによるところが大きい。本研究では、水田土壌に生息する細菌群集に着目し、放射線に暴露された時の反応、そして土壌から溶出したイオンや元素量の変化について検討した。1 Gy/dayの線量率で5日間ガンマ線に連続暴露された水田土壌では、微生物群集の種組成が変化すること、そして溶存鉄濃度が低くなる一方で、硫酸イオン濃度が高くなることを明らかにした。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (15 results)

All 2008 2007

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (11 results)

  • [Journal Article] Application of a droplet-PIXE system to study radiation effects on ecosystem functioning2007

    • Author(s)
      Ishii,N., S.Homma-Takeda, K.Tagami, S.Fuma, H.Takeda
    • Journal Title

      International Journal of PIXE 17

      Pages: 161-167

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Impact of gamma irradiation on the transformation efficiency for extracellular plasmid DNA2007

    • Author(s)
      Ishii,N., T.Sakashita, H.Takeda, Y.Kubota, S.Fuma, M.Doi, S.Takahashi
    • Journal Title

      Journal of Environmental Radioactivity 97

      Pages: 159-167

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Application of a droplet-PIXE system to study radiation effects on ecosystem functioning2007

    • Author(s)
      Nobuyoshi ISHII
    • Journal Title

      International Journal of PIXE 3&4

      Pages: 161-167

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of gamma irradiation on the transformation efficiency for extracellular plasmid DNA2007

    • Author(s)
      Nobuyoshi ISHII
    • Journal Title

      Journal of Environmental Radioactivity 97

      Pages: 159-167

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Effects of ionizing radiation on bacterial community2008

    • Author(s)
      Nobuyoshi ISHII
    • Organizer
      The 7th Japan-France Workshop on Radiation Biology
    • Place of Presentation
      千葉、放医研
    • Year and Date
      2008-10-16
    • Related Report
      2008 Annual Research Report
  • [Presentation] Effects of ionizing-radiation on bacterial community2008

    • Author(s)
      Nobuyoshi ISHII, Shoichi Fuma, Taizo Nakamori, Shino Homma-Takeda, Keiko Tagami, Satoshi Yoshida
    • Organizer
      The 7th Japan-France Workshop on Radiation Biology
    • Place of Presentation
      Chiba
    • Related Report
      2008 Final Research Report
  • [Presentation] 土壌細菌群集に対する放射線の影響評価2007

    • Author(s)
      石井 伸昌
    • Organizer
      日本放射線影響学会 第50回大会
    • Place of Presentation
      千葉、幕張
    • Year and Date
      2007-11-15
    • Related Report
      2007 Annual Research Report
  • [Presentation] 湛水土壌からの鉄溶出に対する放射線の影響2007

    • Author(s)
      石井 伸昌
    • Organizer
      日本陸水学会 第72回大会
    • Place of Presentation
      茨城大学
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] Effects of ionizing radiation on soil bacterial community and their functioning2007

    • Author(s)
      Nobuyoshi ISHII
    • Organizer
      Japan-Ukraine international meeting on radioecology: 20years after Chernobyl, what should be next?
    • Place of Presentation
      千葉、放医研
    • Year and Date
      2007-03-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] 細菌群集に対する放射線の影響2007

    • Author(s)
      石井伸昌
    • Organizer
      第2回放医研放射線防護研究センターシンポジウム
    • Place of Presentation
      千葉
    • Related Report
      2008 Final Research Report
  • [Presentation] 土壌細菌群集に対する放射線の影響評価2007

    • Author(s)
      石井伸昌, 府馬正一, 武田洋
    • Organizer
      日本放射線影響学会第50回大会
    • Place of Presentation
      千葉
    • Related Report
      2008 Final Research Report
  • [Presentation] Effect of gamma irradiation on the transformation efficiency for extracellular plasmid DNA2007

    • Author(s)
      Ishii,N., T.Sakashita, H.Takeda, Y.Kubota, S.Fuma, M.Doi,S.Takahashi
    • Place of Presentation
      Cheju, Korea
    • Related Report
      2008 Final Research Report
  • [Presentation] 湛水土壌からの鉄溶出に対する放射線の影響2007

    • Author(s)
      石井伸昌, 武田志乃, 田上恵子, 府馬正一, 武田洋
    • Organizer
      日本陸水学会第72回大会
    • Place of Presentation
      水戸
    • Related Report
      2008 Final Research Report
  • [Presentation] ffects of ionizing radiation on soil bacterial community and their functioning2007

    • Author(s)
      Ishii,N., S.Homma-Takeda, K.Tagami, N.Ogiu, S.Fuma, H.Takeda
    • Organizer
      Japan-Ukraine International meeting on Radioecology: 20 years after Chernobyl. What should be next?
    • Place of Presentation
      Chiba
    • Related Report
      2008 Final Research Report
  • [Presentation] Effect of gamma irradiation on the transformation efficiency for extracellular plasmid DNA2007

    • Author(s)
      Nobuyoshi ISHII
    • Organizer
      International symposium of river and lake environment
    • Place of Presentation
      韓国、済州
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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