A Gram-negative, facultatively anaerobic, motile, slightly curved rod-shaped bacterial strain was isolated from black sand collected from Soesoggak, Jeju island, Korea. The strain, designated J74, was able to grow in the presence of 1–7.5 % NaCl, at temperatures of 4–45 °C and at pH 5–10. Strain J74 was oxidase- and catalase-positive, arginine dihydrolase-negative and sensitive to the vibriostatic agent O/129. Strain J74 was characterized based on physiology, morphology, biochemical features and 16S rRNA gene sequence analysis. The isolate required sodium ions for growth and utilized a wide range of compounds as sole sources of carbon and energy. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain J74 belongs to the class . It was found to be associated with the genus and was phylogenetically related most closely to the type strain of (98.7 % 16S rRNA gene sequence similarity). However, DNA–DNA hybridization experiments between strain J74 and KCTC 12827 revealed a level of relatedness of 37.7 %. Thus, phenotypic and phylogenetic data suggested that J74 should be placed in the genus as representing a novel species, for which the name sp. nov. is proposed. The type strain is J74 (=KCTC 22122 =JCM 14949).


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