f Erythrobacter xanthus sp. nov., isolated from surface seawater of the South China Sea

A Gram-reaction-negative, aerobic, oxidase- and catalase-positive, yellow-pigmented, non-flagellated, rod-shaped bacterium, designed strain SM1501T, was isolated from surface seawater of the South China Sea. SM1501T grew at 7–42 °C and with 0–11 % (w/v) NaCl. Phylogenetic analyses based on 16S rRNA gene sequences revealed that SM1501T represented a member of the genus Erythrobacter , sharing the highest 16S rRNA gene sequence similarity (97.4 %) with Erythrobacter luteus and 94.2–96.5 % 16S rRNA gene sequence similarities to other species of the genus Erythrobacter with validly published names. The average nucleotide identity (ANI) value and in silico DNA–DNA hybridization value between SM1501T and E. luteus were only 74.6 and 20.0 %, respectively. The predominant cellular fatty acids of SM1501T were C_17 : 1ω6c, C_18 : 1ω7c and summed feature 3 (C_16 : 1ω7c and/or iso-C_15 : 0 2-OH). The major polar lipids of the strain were phosphatidylethanolamine, phosphatidylglycerol, sphingoglycolipid, diphosphatidylglycerol and phosphatidylcholine and the main respiratory quinone of was Q-10. Polyphasic data presented in this paper support the notion that SM1501T represents a novel species in the genus Erythrobacter , for which the name Erythrobacter xanthus sp. nov. is proposed. The type strain of Erythrobacter xanthus is SM1501T (=KCTC 42669T=CCTCC AB 2015396T).