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  • Title: Colwellia chukchiensis sp. nov., a psychrotolerant bacterium isolated from the Arctic Ocean.
    Author: Yu Y, Li HR, Zeng YX.
    Journal: Int J Syst Evol Microbiol; 2011 Apr; 61(Pt 4):850-853. PubMed ID: 20495042.
    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)).
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