Effects of heavy metals on microbiota in the Watarase Retarding Basin

  • SUZUKI Nobuhiro
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • ARAKAWA Risa S.
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • TAGUCHI Naoyuki
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • SIM Joongeun
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • KATSURASHIMA Sayaka
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • KIYONO Hanako
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • UNO Eriko
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • KIMURA Nobutada
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • KIKAWADA Yoshikazu
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • KANZAWA Nobuyuki
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
  • SAITO Tamao
    Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University

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Other Title
  • 渡良瀬遊水地における重金属が微生物叢に与える影響

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Description

Approximately 100 years ago, contaminated water from the Ashio Copper Mine in Japan spilled out frequently during floods and caused the detrimental effects on surrounding areas. Currently, situations of the heavy metal contamination have been improved due to the recent activities of the government, NPOs and citizen volunteers. However, high amount of heavy metals can be still detected and effects of these heavy metals on organisms are still not clear around the Watarase Retarding Basin. In this study, we investigated the effects of heavy metals on the microbial compositions in the Watarase Retarding Basin. Measurement of heavy metals extracted from the soils sampled at different spots demonstrated that the soil from the previously contaminated spot showed higher level of various heavy metals compared to other spots. In addition, in this spot, soil bacterial composition was changed drastically, indicating that the bacterial communities were affected by the presence of heavy metals in the soil. Especially, Acidobacteria which was reported to exist in chemically polluted areas was abundant. It should be the first report that revealed the effects of heavy metals on microorganisms in the Watarase Retarding Basin.

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