Lutibacter oceani sp nov., isolated from marine sediment in South Korea

A novel Gram-negative, non-motile, non-spore forming, facultatively anaerobic and short-rod shaped bacterial strain, designated as 325-5(T), was isolated from marine sediment obtained from a coastal region in South Korea. Phylogenetic analysis based on the 16S rRNA gene sequence of strain 325-5(T) showed close similarity to Lutibacter crassostreae (97.8 %). The novel isolate was found to grow optimally at 25 A degrees C and pH 7.0. The major fatty acids identified in the strain were iso C-15:0 and iso C-15:0 3OH, which supports the affiliation of strain 325-5(T) to the genus Lutibacter. Menaquinone (MK-6) was identified as the respiratory quinone component. The polar lipid profile was found to contain phosphatidylethanolamine and two unidentified lipids. The G+C molar content of strain 325-5(T) was determined to be 33.1 mol%. DNA-DNA hybridization of strain 325-5(T) exhibited less than 40 % relatedness to L. crassostreae KCTC 42461(T). Pigment analysis showed the presence of carotenoid pigments. Based on this polyphasic analysis, we propose that strain 325-5(T) represents a novel species of the genus Lutibacter, for which the name Lutibacter oceani sp. nov. (type strain 325-5(T) = JCM 30924(T) = KEMB 7306-529(T)) is proposed.