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

Abstract

A novel Gram-negative, orange-pigmented, slightly halophilic, rod-shaped bacterium, strain T30T, was isolated from sediment from the South China Sea. Phylogenetic analysis showed that strain T30Twas a member of the genusErythrobacter, sharing highest 16S rRNA gene sequence similarities withErythrobacteraquimarisJCM 12189T(99.5 %) andErythrobactervulgarisDSM 17792T(99.0 %). Levels of DNA–DNA relatedness between strain T30Tand closely related strains ofErythrobacterspecies ranged from 14.5 to 56.9 %.The isolate lacked bacteriochlorophyllaand contained ubiquinone-10 as the predominant respiratory lipoquinone. The major fatty acids of this strain were C18 : 1ω7c(38.2 %) and C16 : 1ω7c/C16 : 1ω6c(17.4 %). The major polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylcholine and phosphatidylglycerol. The DNA G+C content of strain T30Twas 59.5 mol%. On the basis of phenotypic and phylogenetic data, a novel species,Erythrobacter nanhaisediminissp. nov., is proposed; the type strain is T30T(=CGMCC 1.7715T=JCM 16125T).