Altererythrobacter mangrovi sp nov., isolated from mangrove sediment

A Gram-stain-negative, facultative anaerobic, yellow-pigmented, rod-shaped, non-flagellum and non-motile bacterial strain, designed C9-11(T), was isolated from mangrove sediment in Zhangzhou, Fujian Province, China. Growth was observed at temperatures from 15 to 37 degrees C (optimum 30 degrees C), at salinities from 0 to 4% (optimum 0.5-2 %) and at pH from 6 to 8 (optimum 7). Phylogenetic analysis based on 16S rRNA gene sequence revealed that strain C9-11(T) was a member of the genus Altererythrobacter. Strain C9-11(T) was related most closely to Altererythrobacter oceanensis Y2(T) (96.8% 16S rRNA gene sequence similarity), followed by Altererythrobacter marinus H32(T) (96.5 %). The G+C content of the genomic DNA was 63.5 mol %. The dominant fatty acids were C-18 : 1 omega 7c (41.6 %), C-17 : 1 omega 6c (15.4 %), 11-methyl C-18 : 1 omega 7c (8.1 %), summed feature 3 (comprising C-16 : 1 omega 7c and/or C-16 : 1 omega 6c 7.4 %) and C-16 : 0 (6.2 %). The predominant respiratory quinone was ubiquinone-10 and the major polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and sphingoglycolipid. According to its morphology, physiology, fatty acid composition and 16S rRNA gene sequence analysis, strain C9-11(T) belongs to genus Altererythrobacter, but can readily be distinguished from recognized species. Strain C9-11(T) is proposed as the type strain of a novel species of the genus Altererythrobacter, for which the name Altererythrobacter mangrovi sp. nov (=MCCC 1K03311(T)=JCM 32056(T)) is proposed.