A taxonomic study was carried out on a Gram-negative, rod-shaped, non-motile, halophilic bacterium, designated strain W11-2B, which was isolated from a pyrene-degrading consortium that was enriched from sediment from the Pacific Ocean. Growth was observed at salinities of 0.5–10 % and at temperatures of 10–41 °C. Strain W11-2B was unable to degrade Tween 80 or gelatin. 16S rRNA gene sequence comparisons showed that strain W11-2B was related most closely to SS011B1-20 (95.8 % similarity) and HTCC2597 (95.7 %); levels of 16S rRNA gene sequence similarity between strain W11-2B and the type strains of other species tested were below 95.2 %. The dominant fatty acids of strain W11-2B were C 7 (32.1 % of the total), C cyclo (20.9 %), C 7 11-methyl (19.5 %), C (7.3 %), C (6.6 %) and C (3.8 %). The G+C content of the chromosomal DNA was 64.6 mol%. The above data were in good agreement with those of members of the genus . Based on morphology, physiology, fatty acid composition and 16S rRNA gene sequence data, strain W11-2B is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is W11-2B (=CCTCC AB 208224=LMG 24619=MCCC 1A01034).


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Transmission electron micrograph of cells of strain W11-2B . [PDF](308 KB)


Cellular fatty acid contents of strain W11-2B and related species. [PDF](48 KB)


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