1887

Abstract

Strain BELH1, a novel mesophilic, anaerobic, halotolerant, rod-shaped bacterium, was isolated from a Tunisian wastewater digester. The cells of the strain are motile, measure 0.5×2–5 µm, and occur singly or in pairs. The strain reduced thiosulfate and elemental sulfur (but not sulfate or sulfite) into sulfide. It grew at 15–40 °C (optimum 30 °C), pH 5.8–8.4 (optimum 7) and with 0–10 % (w/v) NaCl (optimum 3.0 %). The genomic DNA G+C content of strain BELH1 was 38.2 mol% and the strain’s predominant cellular fatty acids were C, asummed feature that contained iso-C and/or anteiso-C B, and C. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the novel strain was most closely related to (94.8 % sequence similarity). Based on phenotypic, phylogenetic and taxonomic characteristics, strain BELH1 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is BELH1 ( = DSM 24436 = JCM 17481).

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2012-06-01
2019-10-22
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