In Situ Gene Expression Responsible for Sulfide Oxidation and CO₂ Fixation of an Uncultured Large Sausage-Shaped Aquificae Bacterium in a Sulfidic Hot Spring <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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We investigated the <i>in situ</i> gene expression profile of sulfur-turf microbial mats dominated by an uncultured large sausage-shaped <i>Aquificae</i> 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 <i>in situ</i>.
- Microbes and Environments
Microbes and Environments 31(2), 194-198, 2016
Japanese Society of Microbial Ecology · The Japanese Society of Soil Microbiology