Abstract
A Gram-reaction-negative, strictly aerobic, non-motile bacterium, designated strain G4(T), was isolated from a sandy beach of Taean in South Korea. Cells were ovoid rods and were catalase- and oxidase-positive. Growth of strain G4(T) was determined at 15-35 °C (optimum 25-30 °C) and pH 6-8 (optimum pH 6.5-7.5). Strain G4(T) contained Q-10 as the predominant isoprenoid quinone and C(18 : 1)ω7c (59.0 %), C(18 : 1)ω7c 11-methyl (11.3 %) and C(12 : 1) 3-OH (9.8 %) as the major fatty acids. The major cellular polar lipids were identified as phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine, an unidentified amino lipid, an unidentified phospholipid and an unidentified lipid. The DNA G+C content was 62.4 mol%. Phylogenetic and comparative analysis based on 16S rRNA gene sequences indicated that strain G4(T) fell within the family Rhodobacteraceae of Alphaproteobacteria and was most closely related to members of the genera Marinovum, Leisingera and Phaeobacter with 95.5-96.4 % sequence similarities. On the basis of phenotypic, chemotaxonomic and molecular properties, strain G4(T) represents a novel species of a novel genus within the family Rhodobacteraceae, for which the name Litorimicrobium taeanense gen. nov., sp. nov. is proposed. The type strain is G4(T) ( = KACC 13706(T) = DSM 22007(T)).
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