Spongiibacterium flavum gen. nov., sp. nov., a member of the family Flavobacteriaceae isolated from the marine sponge Halichondria oshoro, and emended descriptions of the genera Croceitalea and Flagellimonas
A Gram-negative, strictly aerobic, non-flagellated, non-gliding, oxidase- and catalase-positive, yellow-pigmented rod, designated A11T, was isolated from a marine sponge, Halichondria oshoro, collected on the coastline of Jeju Island, Republic of Korea. Phylogenetic analysis based on nearly complete 16S rRNA gene sequences revealed that strain A11T was a member of the family Flavobacteriaceae. Its closest relatives were members of the genera Muricauda, Flagellimonas and Croceitalea (94.4–94.8 % 16S rRNA gene sequence similarity). The only polar lipid detected in strain A11T was phosphatidylethanolamine. The dominant fatty acids were iso-C15 : 0 (30.4 %), iso-C15 : 1 G (26.7 %), iso-C17 : 0 3-OH (12.4 %) and iso-C15 : 0 3-OH (7.3 %). The DNA G+C content of strain A11T was 41.7 mol% and its major respiratory quinone was MK-6. On the basis of combined data from phenotypic and phylogenetic analyses, strain A11T represents a novel genus and species within the family Flavobacteriaceae, for which the name Spongiibacterium flavum gen. nov., sp. nov. is proposed. The type strain of the type species is A11T ( = KCTC 22665T = DSM 22638T). Emended descriptions of the genera Croceitalea and Flagellimonas are also given.
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