Abstract

A Gram-negative, orange-pigmented, rod-shaped bacterium, designated strain CP32T was isolated from a brown alga Carpopeltis affinis collected on the coast of Jeju Island, Republic of Korea. The isolate grew at 10–37°C (optimum 25°C) and at pH 6.5–9.5 (optimum pH 7.0). The 16S rRNA gene sequence of the isolate showed much similarity with the type strains of recognized species of the genus Winogradskyella (94.0–96.6%). The most closely related species were Winogradskyella echinorum KMM 6211T, Winogradskyella ulvae KMM 6390T, Winogradskyella thalassocola KMM 3907T, Winogradskyella poriferorum UST030701-295T, and Winogradskyella eximia KMM 3944T. The major respiratory quinone was menaquinone-6 (MK-6) and the predominant cellular fatty acids were iso-C15:1 G (24.8%), iso-C15:0 (23.4%), and iso-C17:0 3-OH (11.6 %). The DNA G+C content was 33.3 mol%. The polar lipid profile was composed of phosphatidylethanolamine, two aminolipids, and five unknown lipids. On the basis of phenotypic features, and the result of 16S rRNA gene sequence analysis, strain CP32T (=KCTC 23835T =JCM 18454T) represents a novel species of the genus Winogradskyella, for which the name Winogradskyella jejuensis sp. nov. is proposed.

• Keywords: Flavobacteriaceae;Winogradskyella jejuensis sp. nov.;brown alga