Aequorivita sinensis sp. nov., isolated from sediment of the East China Sea, and reclassification of Vitellibacter todarodis as Aequorivita todarodis comb. nov. and Vitellibacter aquimaris as Aequorivita aquimaris comb. nov.

The Gram-strain-negative, rod-shaped, facultatively anaerobic, non-motile bacterial strain, designated S1-10 ^T , was isolated from marine sediment. Strain S1-10 ^T grew at 4-42 °C (optimally at 30-35 °C), at pH 7.0-10 (optimally at pH 9) and in the presence of 0.5-8 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain S1-10 ^T was related to the genus Aequorivita and had highest 16S rRNA gene sequence similarity to Aequorivita viscosa 8-1b ^T (97.7%). The predominant cellular fatty acids were iso-C _15 : 0 and anteiso-C _15 : 0 . The main respiratory quinone was menaquinone 6 (MK-6). The genomic DNA G+C content of strain S1-10 ^T was 34.6 mol%. The polar lipid profile of strain S1-10 ^T contained phosphatidylethanolamine, two aminolipids, two glycolipids, one phosphoglycolipid and three unidentified polar lipids. In addition, the maximum values of in silico DNA-DNA hybridization ( is DDH) and average nucleotide identity (ANI) between strain S1-10 ^T and A. viscosa CGMCC 1.11023 ^T were 15.4 and 75.7 %, respectively. Combined data from phenotypic, phylogenetic, is DDH and ANI analyses demonstrated that strain S1-10 ^T is the representative of a novel species of the genus Aequorivita , for which we propose the name Aequorivita sinensis sp. nov. (type strain S1-10 ^T =CGMCC 1.12579 ^T =JCM 19789 ^T ). We also propose that Vitellibacter todarodis and Vitellibacter aquimaris should be transferred into genus Aequorivita and be named Aequorivita todarodis comb. nov. and Aequorivita aquimaris comb. nov., respectively. The type strain of Aequorivita todarodis comb. nov. is MYP2-2 ^T (= KCTC 62141 ^T = NBRC 113025 ^T ) and the type strain of Aequorivita aquimaris comb. nov. is D-24 ^T (=KCTC 42708 ^T =DSM 101732 ^T ).