<i>In Situ</i> Gene Expression Responsible for Sulfide Oxidation and CO<sub>2</sub> Fixation of an Uncultured Large Sausage-Shaped <i>Aquificae</i> Bacterium in a Sulfidic Hot Spring

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  • Tamazawa Satoshi
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • Yamamoto Kyosuke
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • Takasaki Kazuto
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • Mitani Yasuo
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • Hanada Satoshi
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) Graduate School of Life and Environmental Sciences, University of Tsukuba
  • Kamagata Yoichi
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • Tamaki Hideyuki
    Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)

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  • In Situ Gene Expression Responsible for Sulfide Oxidation and CO₂ Fixation of an Uncultured Large Sausage-Shaped Aquificae Bacterium in a Sulfidic Hot Spring

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Description

We investigated the in situ gene expression profile of sulfur-turf microbial mats dominated by an uncultured large sausage-shaped Aquificae bacterium, a key metabolic player in sulfur-turfs in sulfidic hot springs. A reverse transcription-PCR analysis revealed that the genes responsible for sulfide, sulfite, and thiosulfate oxidation and carbon fixation via the reductive TCA cycle were continuously expressed in sulfur-turf mats taken at different sampling points, seasons, and years. These results suggest that the uncultured large sausage-shaped bacterium has the ability to grow chemolithoautotrophically and plays key roles as a primary producer in the sulfidic hot spring ecosystem in situ.

Journal

  • Microbes and Environments

    Microbes and Environments 31 (2), 194-198, 2016

    Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles

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