Tenacibaculum geojense sp. nov., isolated from seawater

A Gram-negative, non-flagellated, non-spore-forming bacterium, designated YCS-6 ^T, that was motile by gliding, was isolated from seawater on the southern coast of Korea. Strain YCS-6 ^T grew optimally at 30 °C and with 2% (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain YCS-6 ^T fell within the genus Tenacibaculum and was most closely associated with Tenacibaculum litopenaei B-I ^T, with which the isolate exhibited 95.9% 16S rRNA gene sequence similarity. Sequence similarity between strain YCS-6 ^T and other members of the genus Tenacibaculum was 93.8-95.7 %. Strain YCS-6 ^T contained menaquinone-6 (MK-6) as the predominant respiratory quinone and iso-C _{15: 0}, summed feature 3 (iso-C _{15: 0} 2-OH and/or C _{16: 1}ω7c), iso-C _{15: 0} 3-OH and iso-C _{15: 1} G as the major fatty acids. The DNA G+C content was 32.7 mol%. Differential phenotypic properties and phylogenetic distinctiveness distinguished strain YCS-6 ^T from all other members of the genus Tenacibaculum. On the basis of our phenotypic, chemotaxonomic and phylogenetic data, strain YCS-6 ^T is considered to represent a novel species of the genus Tenacibaculum, for which the name Tenacibaculum geojense sp. nov. is proposed. The type strain is YCS-6 ^T (=KCTC 23423 ^T =CCUG 60527 ^T).