1887

Abstract

A Gram-negative, chemoheterotrophic, strictly aerobic, alkaliphilic, rod-shaped marine bacterium, designated HTCC2654, was isolated from the western Sargasso Sea by using a dilution-to-extinction culturing method. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain HTCC2654 belonged to the clade of the order . The 16S rRNA gene sequence similarity of the strain with respect to other members of the r clade ranged from 90.4 to 95.1 %. In the phylogenetic analyses, the strain formed an independent phyletic line and could not be assigned to any other known genera of the . The DNA G+C content of strain HTCC2654 was 61.7 mol% by HPLC and 64.1 mol% from genome sequences. The predominant constituents of the cellular fatty acids were C 2-OH (27.3 %), 11-methyl C 7 (19.6 %) and C 7 (17.3 %), and the major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and phosphatidylcholine, which served to differentiate the strain from other members of the clade. On the basis of the taxonomic data obtained in this study, strain HTCC2654 represents a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain is HTCC2654 (=KCCM 42376=NBRC 102057).

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2007-07-01
2024-03-29
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