1887

Abstract

An aerobic, Gram-negative, catalase-positive, oxidase-positive bacterium, designated strain YC6-17, was isolated from pieces of wood collected at the bottom of Youngcheon Cave in Jeju, Republic of Korea. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain YC6-17 formed a tight cluster with DSM 25521 (98.1 % sequence similarity) and was distinctly separate from other taxa of the order . Cells were motile rods and showed growth at 10–30 °C, pH 6–8 and 2 % NaCl. Colonies were smooth, circular, convex and pale yellow in colour. The predominant ubiquinone was Q-10. The predominant fatty acids were Cω7, 11-methyl-Cω7, summed feature 3 and C. The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, two glycolipids and a lipid. The DNA G+C content was 64.4 mol%. DNA–DNA relatedness between strain YC6-17 and the closest relative was 15.6±7.9 %. Based on combined data from phenotypic characterization and DNA–DNA hybridization as well as phylogenetic analysis, it was suggested that the isolate represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is strain YC6-17 (=KCTC 52518=DSM 103734).

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2017-09-01
2019-12-11
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