sp. nov., isolated from deep-sea sediment.

A novel bacterial strain, designated SW136, was isolated from a deep-sea sediment sample collected from the South China Sea. Cells were Gram-stain-negative, aerobic, catalase-positive and oxidase-positive. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SW136 represented a novel member of the genus , forming a distinct cluster with '', and (98.2, 98.1 and 97.9% sequence similarity, respectively). The predominant cellular fatty acid of strain SW136 was C 7. Strain SW136 contained ubiquinone-10 as the dominant respiratory quinone, and diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine and phosphatidylglycerol as the major polar lipids. The genomic DNA G+C content was 64.3 mol%. The average nucleotide identity and digital DNA-DNA hybridization values of strain SW136 with CGMCC 1.12222 and CGMCC 1.12225 were 78.8 and 78.6 % and 21.5 and 25.5 %, respectively. On the basis of phylogenetic inference and phenotypic characteristics, we propose that strain SW136 represents a novel species of the genus , with the name sp. nov. The type strain is SW136 (=CGMCC 1.17725=KCTC 82366).