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Abstract

Strain JBM2-3, a pale-yellow-coloured, aerobic, catalase-negative, oxidase-positive and Gram-stain-negative bacterium, was isolated from wet soil. The isolate grew aerobically at 25–30 °C (optimum 25 °C), pH 6.0–8.0 (optimum pH 7.0) and in the presence of 0–0.5 % (w/v) NaCl (optimum 0 % NaCl). Phylogenetic analysis based on 16S rRNA gene sequence indicated that strain JBM2-3 belonged to the genus Spirosoma , with a sequence similarity of 96.2 % with Spirosoma panaciterrae Gsoil 1519. The strain showed the typical chemotaxonomic characteristics of the genus Spirosoma , with the presence of menaquinone 7 as the respiratory quinone; the major fatty acids were summed feature 3 (composed of C16: 1ω6c /ω7c), C16: 1ω5c and iso-C15: 0. The DNA G+C content of strain JBM2-3 was 47.4 mol%. The polar lipid profile contained major amounts of phosphatidylethanolamine and aminophospholipids. On the basis of its phenotypic and genotypic properties, and phylogenetic distinctiveness, strain JBM2-3 should be classified as a representative of a novel species in the genus Spirosoma , for which the name Spirosoma swuense sp. nov. is proposed. The type strain is JBM2-3 (=KCTC 52176=JCM 31298).

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2017-04-03
2019-10-22
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