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Erythrobacter nanhaisediminis sp. nov., isolated from marine sediment of the South China Sea

¹ China agricultural university;
² Institute of Microbiology, Chinese Academy of Sciences;
³ Polar Research Institute of China;
⁴ Beijing Institute of Technology;
⁵ China Agricultural University

⁶ E-mail: tianhome{at}cau.edu.cn

A novel Gram-negative, orange-pigmented, slightly halophilic, rod shaped strain T30^T was isolated from the South China Sea. Phylogenetic analysis showed that strain T30^T was a member of the genus Erythrobacter, sharing the highest 16S rRNA gene sequence similarities with E. aquimaris JCM 12189^T (99.5 %) and E. vulgaris DSM 17792^T (99.0 %). Levels of DNA-DNA relatedness between strain T30^T and closely related strains of Erythrobacter species ranged from 14.5 to 56.9 %.This isolate lacked bacteriochlorophyll a and contained ubiquinone-10 (Q-10) as the predominant respiratory lipoquinone. The major fatty acids of this strain were C_18:17c (38.2%) and C_16:17c/ C_16:16c (17.4%). The major polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylcholine and phosphatidylglycerol. The DNA G+C content of this strain was 59.5 mol %. On the basis of phenotypic and phylogenetic data, a new species Erythrobacter nanhaisediminis is proposed; the type strain is T30^T (=CGMCC 1.7715^T=JCM 16125^T).