Loktanella sediminum sp. nov., isolated from marine surface sediment
A Gram-staining-negative, strictly aerobic and short rod-shaped bacterium, designated strain S3B03T, was isolated from the sediment of the northern Okinawa Trough. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain S3B03T belonged to the genus Loktanella (family Rhodobacteraceae ) and showed the highest sequence similarity with Loktanella litorea KCTC 23883T (96.16 %) and 92.99–95.90 % 16S rRNA gene sequence similarity to other members of the genus Loktanella . Optimal growth occurred in the presence of 2–5 % (w/v) NaCl at pH 7.0–8.0 and 28–32 °C. Ubiquinone-10 (Q-10) was the predominant respiratory quinone. The major fatty acids (>10 % of the total fatty acids) were C18 : 1ω7c and/or C18 : 1ω6c. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine and two unidentified polar lipids. The DNA G+C content of strain S3B03T was 57.6 mol%. On the basis of polyphasic analysis, strain S3B03T is considered to represent a novel species of the genus Loktanella , for which the name Loktanella sediminum sp. nov. is proposed. The type strain is S3B03T ( = JCM 30120T = DSM 28715T = MCCC 1K00257T).