Salinimicrobium gaetbulicola sp. nov., isolated from tidal flat sediment
A Gram-stain-negative, aerobic, non-flagellated, non-gliding and short rod- or rod-shaped bacterial strain, designated BB-My20T, was isolated from tidal flat sediment taken from the southern coast of Korea. Strain BB-My20T grew optimally at 37 °C, at pH 7.0–7.5 and in the presence of 2 % (w/v) NaCl. A phylogenetic tree based on 16S rRNA gene sequences showed that strain BB-My20T fell within the clade comprising Salinimicrobium species, joining Salinimicrobium catena HY1T, with which it had a 16S rRNA gene sequence similarity value of 97.4 %. It exhibited 95.4–96.9 % sequence similarity to the type strains of other members of the genus Salinimicrobium . Strain BB-My20T contained MK-6 as the predominant menaquinone and iso-C15 : 0, anteiso-C15 : 0 and iso-C17 : 0 3-OH as the major fatty acids. The major polar lipids detected in strain BB-My20T and S. catena JCM 14015T were phosphatidylethanolamine and one unidentified lipid. The DNA G+C content of strain BB-My20T was 45.1 mol% and its mean DNA–DNA relatedness value with S. catena JCM 14015T was 4.5 %. Differential phenotypic properties, together with its phylogenetic and genetic distinctiveness, revealed that strain BB-My20T can be distinguished from the four recognized species of the genus Salinimicrobium . On the basis of the data presented, strain BB-My20T is considered to represent a novel species of the genus Salinimicrobium , for which the name Salinimicrobium gaetbulicola sp. nov. is proposed; the type strain is BB-My20T ( = KCTC 23579T = CCUG 60898T).