Arenibacillus arenosus gen. nov., sp. nov., a member of the family Rhodobacteraceae isolated from sea sand

초록

A Gram-stain-negative, aerobic, non-motile, non-spore-forming, rod-shaped bacterial strain, designated CAU 1304(T), was isolated from sea sand. Strain CAU 1304(T) grew optimally at pH 8.5 and 30 degrees C and in the presence of 1 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain CAU 1304(T) belonged to the family Rhodobacteraceae, and was most closely related to Roseicitreum antarcticum ZS2-28(T)- (96.54 % similarity) and Rhodobacter veldkampii ATCC 35703(T) (96.46 %). The major fatty acid was C-18 (:) (1)omega 7c and the respiratory quinone was Q-10. The polar lipids were composed of phosphatidylglycerol, phosphatidylcholine and an unidentified aminolipid. The DNA G+C content was 55.9 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic analysis, it is proposed that strain CAU 1304(T) represents a novel species of a new genus of the family Rhodobacteraceae, for which the name Arenibacillus arenosus gen. nov., sp. nov. is proposed. The type strain of Arenibacillus arenosus is CAU 1304(T) (=KCTC 42827(T)=NBRC 113022(T)).

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