A Gram-negative, aerobic, slightly halophilic, rod-shaped bacterium was isolated from black sand in Soesoggak, Jeju island, Korea. The strain, designated J63, was oxidase- and catalase-positive and arginine dihydrolase-negative. The isolate required Na for growth and differed from phenotypically related species by being able to utilize sucrose and -galactose as a carbon source. Phylogenetic analysis based on the sequence of the 16S rRNA gene revealed that strain J63 belongs to the genus . It exhibited 16S rRNA gene sequence similarities of 97.6–98.7 % to the closely related species , , and . The phylogenetic analysis revealed that strain J63 comprised a relatively long subline of descent, shared a branch point with the outlying species and occupied a phylogenetically distant position on the main branch. Based on DNA–DNA hybridization, the levels of relatedness between strain J63 and NBRC 102224, CIP 108405 and JCM 20774 were 56.2, 45.1 and 51.3 %, respectively. On the basis of the phenotypic, genetic and phylogenetic data, strain J63 should be placed in the genus as representing a novel species, for which the name sp. nov. is proposed. The type strain is J63 (=KCTC 22118=JCM 14948).


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