Aureibaculum algae sp. nov. isolated from the Pacific red alga Ahnfeltia tobuchiensis

A Gram stain-negative, aerobic, rod-shaped, motile by gliding and yellow-orange-pigmented bacterium, designated strain 10Alg 115 T , was isolated from the red alga Ahnfeltia tobuchiensis . The phylogenetic analysis based on 16S rRNA gene sequences placed the novel strain within the family Flavobacteriaceae , phylum Bacteroidetes. The nearest neighbor of the new isolate was Aureibaculum marinum KCTC 62204 T with sequence similarity of 98.1%. The average nucleotide similarity and digital DNA–DNA hybridization values between the novel strain and Aureibaculum marinum KCTC 62204 T were 80% and 22.3%, respectively. The prevalent fatty acids of strain 10Alg 115 T were iso-C 15:0 , iso-C 15:1 G , iso-C 17:0 3-OH, iso-C 16:0 3-OH and C 15:0 . The polar lipid profile consisted of phosphatidylethanolamine, two unidentified aminolipids and two unidentified lipids. The DNA G + C content of the type strain calculated from the whole-genome sequence was 32.2 mol%. A combination of the genotypic and phenotypic data showed that the algal isolate represents a novel species of the of genus Aureibaculum , for which the name Aureibaculum algae sp. nov. is proposed. The type strain is 10Alg 115 T (= KCTC 62086 T = KMM 6764 T ).