【标题】Colwellia chukchiensis sp. nov., a psychrotolerant bacterium isolated from the Arctic Ocean
【Title】Colwellia chukchiensis sp. nov., a psychrotolerant bacterium isolated from the Arctic Ocean
【期刊】International journal of systematic and evolutionary microbiology
【Journal】International journal of systematic and evolutionary microbiology
【Abstract】A novel psychrotolerant bacterial strain, BCw111(T), was isolated from seawater samples from the Chukchi Sea in the Arctic Ocean. Cells of strain BCw111(T) were Gram-negative, motile, facultatively anaerobic, curved rods and were able to grow at 0-30 °C (optimum 23-25 °C). Strain BCw111(T) had Q-8 as the major respiratory quinone and contained iso-C(15 : 0) 2-OH and/or C(16 : 1)ω7c (28.13 %), C(16 : 0) (13.28 %) and C(17 : 1) (12.90 %) as the major cellular fatty acids. The genomic DNA G+C content was 41.3 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain BCw11(T) formed a distinct lineage within the genus Colwellia and exhibited the highest 16S rRNA gene sequence similarity with Colwellia polaris 537(T) (97.8 %) and Colwellia aestuarii SMK-10(T) (97.1 %). Based on phenotypic characteristics, phylogenetic analysis and DNA-DNA relatedness, a novel species, Colwellia chukchiensis sp. nov., is proposed. The type strain is BCw111(T) ( = CGMCC 1.9127(T) = LMG 25329(T) = DSM 22576(T)).