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Abstract

A bacterial strain, designated JS7-11, was isolated from the surface sediment of the Jiulong River and characterized using a polyphasic taxonomic approach. Cells of JS7-11 were Gram-staining-negative, non-motile and short-rod-shaped. Growth was observed at 10–40 °C (optimum 25–30 °C), at pH 6–8 (optimum 7) and in 1–12 % NaCl (optimum 3–4 %, w/v). The results of phylogenetic analysis based on 16S rRNA gene sequences indicated that JS7-11 and SSW136 formed an independent cluster, sharing 97.9 % similarity between the two strains, and less than 96.0 % similarities with other type strains of members of the family . The major fatty acids were summed feature 8 and C. The quinone was identified as Q-10. The polar lipids comprised phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and two unidentified phospholipids. The DNA G+C content was 63.4 mol%. The digital DNA–DNA hybridization and average nucleotide identity values between JS7-11 and SSW136 were 22.1 and 79.4 %, respectively. The results of phenotypic, phylogenetic and chemotaxonomic analyses clearly indicated that JS7-11 represents a novel species within the genus , for which the name sp. nov. is proposed. The type strain of the novel species is JS7-11 (=MCCC 1A00710=KCTC 42144).

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2017-05-01
2019-12-13
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