1887

Abstract

A novel thermophilic and sulfur-reducing heterotrophic bacterium, strain TFS10-5, was isolated from a deep-sea hydrothermal field in Yonaguni Knoll IV, Southern Okinawa Trough. Cells of strain TFS10-5 were motile rods, 1.5–5 μm in length and 0.5–0.8 μm in width. Strain TFS10-5 was an obligately anaerobic heterotroph and sulfur-reduction stimulated growth. Growth was observed between 30 and 70 °C (optimum at 55–60 °C), pH 5.0–7.4 (optimum at pH 5.5–5.8), 1.0–5.5 NaCl % (optimum at 3.0–3.5 %). The fatty acid content was C (71.0 %), C (6.0 %), C (21.4 %) and C (1.6 %). The G+C content of the genomic DNA was 28 mol%. 16S rRNA gene sequence analysis indicated that strain TFS10-5 belongs to the genus . Based on the physiological and phylogenetic features of the new isolate, strain TFS10-5 represents a novel species in the genus for which the name sp. nov. is proposed. The type strain is TFS10-5 (=JCM 13303=DSM 17373).

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2007-03-01
2024-03-28
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