Aureitalea marina gen. nov., sp. nov., a member of the family Flavobacteriaceae, isolated from seawater

Abstract

An irregular rod-shaped, non-gliding, yellow-pigmented bacterium was isolated from seawater from the western North Pacific Ocean near Japan. The strain, designated S1-66T, was Gram-negative, obligately aerobic, heterotrophic and oxidase-positive. Growth occurred in the presence of 1–4 % NaCl, with optimum growth at 2 % NaCl. The strain grew at 15–30 °C, with optimum growth at 20–25 °C. The G+C content of genomic DNA was 48.1 mol% (HPLC). The predominant isoprenoid quinone was MK-6 and the major cellular fatty acids were iso-C15 : 0(26.4 %), iso-C15 : 1(20.3 %) and iso-C17 : 03-OH (14.2 %). Phylogenetic trees generated by using 16S rRNA gene sequences revealed that strain S1-66Tbelongs to the familyFlavobacteriaceaeand showed 94.2 % sequence similarity to the most closely related type strain,Ulvibacter antarcticusIMCC3101T. On the basis of phenotypic and phylogenetic features, S1-66Tis classified in a novel genus and species within the familyFlavobacteriaceae, for which the nameAureitalea marinagen. nov., sp. nov. is proposed. The type strain ofAureitalea marinais S1-66T( = NBRC 107741T = KCTC 23434T).