RT Journal Article SR Electronic(1) A1 Kim, Young-Ok A1 Kong, Hee Jeong A1 Park, Sooyeon A1 Kang, So-Jung A1 Kim, Woo-Jin A1 Kim, Kyung-Kil A1 Oh, Tae-Kwang A1 Yoon, Jung-HoonYR 2012 T1 Roseovarius halocynthiae sp. nov., isolated from the sea squirt Halocynthia roretzi JF International Journal of Systematic and Evolutionary Microbiology, VO 62 IS Pt_4 SP 931 OP 936 DO https://doi.org/10.1099/ijs.0.031674-0 PB Microbiology Society, SN 1466-5034, AB A Gram-negative, motile, ovoid- to rod-shaped bacterial strain, designated MA1-10T, was isolated from a sea squirt (Halocynthia roretzi) collected from the South Sea, Korea. Strain MA1-10T grew optimally at pH 7.0–8.0, at 30 °C and in the presence of 2 % (w/v) NaCl. In the neighbour-joining phylogenetic tree based on 16S rRNA gene sequences, strain MA1-10T clustered with Roseovarius crassostreae CV919-312T, with which it exhibited 97.1 % sequence similarity, at a bootstrap resampling value of 96.2 %. It exhibited 93.3–95.8 % 16S rRNA gene sequence similarity to the type strains of other recognized Roseovarius species. Strain MA1-10T contained Q-10 as the predominant ubiquinone and C18 : 1ω7c as the major fatty acid, which is consistent with data for the genus Roseovarius . The major polar lipids were phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, an unidentified aminolipid and an unidentified lipid. The DNA G+C content of strain MA1-10T was 55.4 mol%. Mean DNA–DNA relatedness between strain MA1-10T and R. crassostreae DSM 16950T was 13 %. Differential phenotypic properties, together with phylogenetic and genetic distinctiveness, demonstrated that strain MA1-10T could be distinguished from all recognized Roseovarius species. On the basis of the data presented, strain MA1-10T is considered to represent a novel species of the genus Roseovarius , for which the name Roseovarius halocynthiae sp. nov. is proposed; the type strain is MA1-10T ( = KCTC 23462T = CCUG 60745T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.031674-0