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A Gram-negative, strictly aerobic, slightly curved rod-shaped bacterial strain, designated CL-UU02T, was isolated from coastal seawater off the east coast of Korea. 16S rRNA gene sequence analysis revealed a clear affiliation of this novel strain with the family Rhodospirillaceae. Strain CL-UU02T formed a robust cluster with the type strains of species of the genus Rhodovibrio at 16S rRNA gene sequence similarity levels of 89.9–90.4 %. Strain CL-UU02T shared no more than 89 % 16S rRNA gene sequence similarity with the type strains of other species in the family Rhodospirillaceae. Strain CL-UU02T was able to grow in the presence of 2–6 % sea salts, and grew optimally at 28–30 °C and pH 7–8. The DNA G+C content of strain CL-UU02T was 66.3 mol%. On the basis of phylogenetic analyses and chemotaxonomic and physiological data, strain CL-UU02T is considered to represent a novel species of a new genus in the family Rhodospirillaceae, for which the name Pelagibius litoralis gen. nov., sp. nov. is proposed. The type strain of Pelagibius litoralis is CL-UU02T (=KCCM 42323T=JCM 15426T).
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International Journal of Systematic and Evolutionary Microbiology vol. 59 , part 4, pp. 818 - 823
Supplementary Fig. S1. Extended neighbour-joining tree based on 16S rRNA gene sequences showing the position of strain CL-UU02 T( Pelagibius litoralis gen. nov., sp. nov.) among members of the family Rhodospirillaceae . [PDF](23 KB)