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Abstract
A Gram-negative, aerobic, rod-shaped, motile by gliding and yellow-pigmented bacterium, designated strain 6Alg 8^sup T^, was isolated from the common Pacific green alga Ulva fenestrata. The phylogenetic analysis based on 16S rRNA gene sequence placed the novel strain within the genus Polaribacter, a member of the family Flavobacteriaceae, the phylum Bacteroidetes, with sequence similarities of 97.6 % to Polaribacter dokdonensis DSW-5^sup T^ and 92.8-96.1 % to other recognized Polaribacter species. The prevalent fatty acids of strain 6Alg 8^sup T^ were iso-C^sub 15:0^, iso-C^sub 15:1^, iso-C^sub 15:0^ 2-OH, C^sub 15:0^ and C^sub 15:1^[omega]6. The polar lipid profile consisted of the major lipids phosphatidylethanolamine, two unknown aminolipids and one unknown lipid. The DNA G+C content of the type strain is 31.6 mol%. The new isolate and the type strains of recognized species of the genus Polaribacter were readily distinguished based on a number of phenotypic characteristics. A combination of the genotypic and phenotypic data showed that the algal isolate represents a novel species of the genus Polaribacter, for which the name Polaribacter reichenbachii sp. nov. is proposed. The type strain is 6Alg 8^sup T^ (= KCTC 23969^sup T^ = KMM 6386^sup T^ = LMG 26443^sup T^).[PUBLICATION ABSTRACT]