Altererythrobacter flavus sp nov., isolated from mangrove sediment

A Gram-negative, aerobic, non-motile, rod-shaped bacterium, designated MS1-4(T), was isolated from mangrove sediment of the Jiulong River Estuary, Fujian Province, China. The isolate formed yellow colonies on ZB 2216E agar. Optimal growth was observed at pH 6.0, at 34 degrees C and in the presence of 4 % (w/v) NaCl. Strain MS1-4(T )shared highest 16S rRNA gene sequence similarity of 97.7 % with Altererythrobacter mangrovi C9-11(T), followed by Altererythrobacter ishigakiensis JPCCMB0017(T )(97.2 %). Phylogenetic analysis indicated that strain MS1-4(T) formed a clade with A. mangrovi C9-11(T) within the genus Altererythrobacter. The main cellular fatty acid was summed feature 8 (C-18 (:) (1)omega 7c and/or C-18 (:) (1)omega 6c) and the sole respiratory quinone was ubiquinone Q-10. The main polar lipids consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and glycolipids. The G+C content of the DNA was 60.4 mol%. Based on data from this polyphasic characterization, strain MS1-4(T )should be classified as representing a novel species in the genus Altererythrobacter, for which the name Altererythrobacter flavus sp. nov. is proposed. The type strain is MS1-4(T )(=MCCC 1K02683(T)=NBRC 112977(T)).