1887

Abstract

A Gram-staining-negative, strictly aerobic bacterial strain, designated SM-6, was isolated from a sea tidal flat of the Dangjin bay, South Korea. Strain SM-6 was able to degrade a broad range of aliphatic hydrocarbons. Cells were catalase- and oxidase-positive and non-motile rods. Growth of strain SM-6 was observed at 10–37 °C (optimum, 20–25 °C), at pH 5.5–9.0 (optimum, pH 6.5–7.5) and in the presence of 0–10 % (w/v) NaCl (optimum, 2–3 %). The only isoprenoid quinone detected was ubiquinone-8 (Q-8). C ω8, C 3-OH, summed feature 3 (comprising C ω7 and/or C ω6), C 3-OH and C 3-OH were observed as the major cellular fatty acids and phosphatidylethanolamine, phosphatidylglycerol and four unidentified lipids were detected as polar lipids. The G+C content of the genomic DNA was 47.5 mol%. Strain SM-6 was most closely related to KU41G (95.5 %), KU41E (94.4 %) and SW-11 (94.3 %), based on 16S rRNA gene sequences, and phylogenetic analyses showed that strain SM-6 formed a phyletic lineage distinct from the closely related genera. On the basis of phenotypic, chemotaxonomic and molecular features, strain SM-6 represents a novel genus and species of the order in the class , for which name gen. nov., sp. nov. is proposed. The type strain is SM-6 ( = KACC 18121 = JCM 30134).

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2015-06-01
2021-04-11
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