1887

Abstract

A seawater bacterium, designated IMCC3195, was isolated from the Antarctic coast. Cells of the novel strain were Gram-negative, rusty-coloured, strictly aerobic, chemoheterotrophic, non-budding and non-motile rods or vibrioids that possessed a thin prostheca. Based on 16S rRNA gene sequence comparisons, the novel strain was most closely related to the genera (89.4–90.9 %), (90.1–90.4 %), (89.0 %) and (87.9 %) of the family . Phylogenetic analyses also showed the Antarctic isolate to be only distantly related to the genera of stalked bacteria of marine origin in the family . The DNA G+C content of the novel strain was 60.3 mol% and the predominant cellular fatty acids were C 7 (41.9 %), C 8 (21.4 %) and C (14.3 %). The major quinone was Q-10. Several phenotypic and chemotaxonomic characteristics, including optimum temperature and salinity range for growth, cell morphology, pigmentation and fatty acid content, differentiated the novel strain from other related genera in the family . From the taxonomic evidence collected in this study, it is suggested that strain IMCC3195 (=KCCM 42687=NBRC 103098) represents a new genus and novel species in the family , for which the name gen. nov., sp. nov. is proposed.

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2007-11-01
2019-10-17
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