Isolation and Characterization of a Thermotolerant Ammonia-Oxidizing Bacterium Nitrosomonas sp. JPCCT2 from a Thermal Power Station

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概要

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• A thermotolerant ammonia-oxidizing bacterium strain JPCCT2 was isolated from activated sludge in a thermal power station. Cells of JPCCT2 are short non-motile rods or ellipsoidal. Molecular phylogenetic analysis of 16S rRNA gene sequences demonstrated that JPCCT2 belongs to the genus Nitrosomonas with the highest similarity to Nitrosomonas nitrosa Nm90 (100%), Nitrosomonas sp. Nm148 (99.7%), and Nitrosomonas communis Nm2 (97.7%). However, G+C content of JPCCT2 DNA was 49.1 mol% and clearly different from N. nitrosa Nm90, 47.9%. JPCCT2 was capable of growing at temperatures up to 48°C, while N. nitrosa Nm90 and N. communis Nm2 could not grow at 42°C. Moreover, JPCCT2 grew similarly at concentrations of carbonate 0 and 5 gL-1. This is the first report that Nitrosomonas bacterium is capable of growing at temperatures higher than 37°C.

• 日本微生物生態学会の論文

著者

• Uchino Yoshihito

  NITE Biological Resource Center (NBRC)

• Morikawa Masaaki

  Division Of Biosphere Science Graduate School Of Environmental Science Hokkaido University

• Boonmak Chanita

  Division Of Biosphere Science Graduate School Of Environmental Science Hokkaido University

• Uchino Yoshihito

  NITE Biological Resource Center (NBRC), National Institute of Technology and Evaluation (NITE)

• Itoh Yoshikane

  Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University

• Sakagami Keiko

  Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University

• Oriyama Tetsuro

  Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University

• Tojo Fuyumi

  Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University

• Matsumoto Mitsufumi

  Wakamatsu Research Institute, Technology Development Center, Electric Power Development Co., Ltd.

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