1887

Abstract

A novel sulfur-oxidizing bacterium, strain HA5, was isolated from sediment of a lake in Japan. The cells were rod-shaped (0.3–0.5 × 1.2–6.0 μm) and Gram-stain-negative. The G+C content of the genomic DNA was 63 mol%. The major components in the cellular fatty acid profile were C and summed feature 3 (Cω7 and/or Cω6). The strain oxidized thiosulfate, tetrathionate and elemental sulfur as electron donors to support autotrophic growth. Growth was observed at a temperature range of 8–37 °C, with optimum growth at 28–32 °C. The pH range for growth was pH 6.1–9.2. Optimum growth of the isolate was observed in medium without NaCl. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain belongs to the family in the class . The closest relative was skN76 with the highest 16S rRNA gene sequence similarity of 93 %. On the basis of phylogenetic and phenotypic properties, strain HA5 is proposed to represent a novel species of a new genus, gen. nov., sp. nov. The type strain of the type species is HA5 ( = DSM 100373 = NBRC 110752).

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/content/journal/ijsem/10.1099/ijsem.0.000709
2016-01-01
2019-10-23
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