Erythrobacter insulae sp. nov., isolated from a tidal flat

A Gram-staining-negative, aerobic, non-motile and coccoid, ovoid or rod-shaped bacterial strain, designated as JBTF-M21 T , was isolated from a tidal flat sediment on the Yellow Sea, Republic of Korea. The neighbour-joining phylogenetic tree based on 16S rRNA gene sequences indicated that JBTF-M21 T fell within the clade comprising the type strains of species of the genus Erythrobacter . JBTF-M21 T exhibited 16S rRNA gene sequence similarities of 97.0–98.4 % to the type strains of Erythrobacter longus , Erythrobacter aquimaris , Erythrobacter nanhaisediminis , Erythrobacter vulgaris , Erythrobacter seohaensis , Erythrobacter litoralis and Erythrobacter citreus and 93.7–96.6 % to the type strains of the other species of the genus Erythrobacter . The ANI and dDDH values between JBTF-M21 T and the type strains of E. longus , E. nanhaisediminis , E. seohaensis and E. litoralis were 70.83–72.93 % and 18.0–18.8 %, respectively. Mean DNA–DNA relatedness values between JBTF-M21 T and the type strains of E. aquimaris , E. vulgaris and E. citreus were 12–24 %. The DNA G+C content of JBTF-M21 T was 57.0 mol%. JBTF-M21 T contained Q-10 as the predominant ubiquinone and C 18 : 1 ω7 c and C 17 : 1 ω6 c as the major fatty acids. The major polar lipids ofJBTF-M21 T were phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and sphingoglycolipid. Distinguishing phenotypic properties, together with the phylogenetic and genetic distinctiveness, revealed that JBTF-M21 T is separated from species of the genus Erythrobacter with validly published names. On the basis of the data presented, strain JBTF-M21 T is considered to represent a novel species of the genus Erythrobacter , for which the name Erythrobacter insulae sp. nov. is proposed. The type strain is JBTF-M21 T (=KACC 19864 T =NBRC 113584 T ).