Aerotolerant Thiosulfate-Reducing Bacterium Fusibacter sp. Strain WBS Isolated from Littoral Bottom Sediments of the White Sea—Biochemical and Genome Analysis

The strain WBS, an anaerobic, psychro- and halotolerant bacterium belonging to the genus Fusibacter, was isolated from littoral bottom sediments of White Sea, Arctic, Russia. Fusibacter bizertensis WBS grew at temperatures between 8 32 °C (optimum growth 18–20 °C), pH 5.2 8.3 7.2), NaCl concentrations 0 70 g L−1 L−1). It reduced sulfate, thiosulfate, elemental sulfur into sulfide, and, probably, is able disproportionate thiosulfate. also utilized a wide range substrates as it chemoorganotrophic bacterium. Analysis sequenced genome revealed genes for all enzymes involved in Embden–Meyerhof glycolytic pathway well non-oxidative stage pentose phosphate pathway. presence encoding aldehyde dehydrogenases alcohol suggests that, addition acetate, alcohols can be fermentation products. possessed superoxide dismutase peroxidase activities ability consume O2, which full accordance with corresponding antioxidant defense genome. phylogenetic analysis suggested that closest relative LTF Kr01T (16S rRNA gene sequence similarity 98.78%). Based on biochemical genomic characteristics, proposed represent novel aero-, halo- psychrotolerant first time among its members cold oxygenated marine sediments.