1887

Abstract

A novel marine bacterium, strain JCS350, was isolated from marine sediment samples collected from a cold-seep area. The 16S rRNA gene sequence of the isolate showed high similarity to that of SW-109 (95.9 % sequence similarity). Lower 16S rRNA gene sequence similarities were shown to other members of the genus (94.6–95.4 %) and members of the genus (94.5–95.2 %). Phylogenetic analysis with all members of the family and several members of the family revealed that the isolate formed a phyletic line with [] that was distinct from other members of the family . The dominant fatty acids of strain JCS350 were 18 : 17, 16 : 17 and cyclopropane 17 : 0. The major respiratory quinone was ubiquinone 10. The DNA G+C content was 54.5 mol%. The isolate did not contain bacteriochlorophyll . Optimal growth required the presence of 2 % (w/v) NaCl with either 0.18 % CaCl or 0.59 % MgCl, at pH 6.5 and at 35 °C. On the basis of the evidence of this polyphasic taxonomic study, strain JCS350 should be classified in a novel genus and species in the family , for which the name gen. nov., sp. nov. is proposed. The misclassified species [] is transferred to the new genus as comb. nov. The type strain of is JCS350 (=KCCM 42314 =JCM 13815) and the type strain of is SW-109 (=KCTC 12311 =JCM 12599).

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2007-10-01
2021-10-27
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