Psychroserpens damuponensis sp. nov., isolated from seawater.

A novel bacterium, designated strain F051-1(T), isolated from a seawater sample collected from the coast at Damupo beach in Pohang, Korea, was investigated in a polyphasic taxonomic study. Cells were yellow-pigmented, strictly aerobic, Gram-staining-negative and rod-shaped. The temperature, pH and NaCl ranges for growth were 4-30 °C, pH 6.0-9.0 and 1.0-6.0 % (w/v), respectively. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain F051-1(T) belongs to the genus Psychroserpens in the family Flavobacteriaceae. Its closest relatives were Psychroserpens burtonensis ACAM 188(T) (96.8 % 16S rRNA gene sequence similarity) and Psychroserpens mesophilus KOPRI 13649(T) (95.7 %). The major cellular fatty acids were iso-C(15 : 0), iso-C(15 : 1) G and anteiso-C(15 : 0). The polar lipid profile consisted of a mixture of phosphatidylethanolamine, two unidentified aminolipids, one unidentified phospholipid and eight unidentified lipids. The major respiratory quinone was menaquinone-6 and the genomic DNA G+C content of the strain was 33.5 mol%. On the basis of phenotypic, phylogenetic and genotypic data, strain F051-1(T) represents a novel species within the genus Psychroserpens, for which the name Psychroserpens damuponensis sp. nov. is proposed. The type strain is F051-1(T) ( = KCTC 23539(T)  = JCM 17632(T)).