Aequorivita sediminis sp. nov. and Aequorivita marina sp. nov., isolated from marine sediment.

Two Gram-stain-negative, rod-shaped, non-motile, strictly aerobic strains, forming yellow colonies and designated F6058 ^T and S2608 ^T , were isolated from marine sediment collected in Weihai, PR China. Both strains grow at 4-40 °C (optimum, 30-33 °C), pH 6.0-7.5 (optimum, pH 6.5) and in the presence of 0-7.0 % (w/v) NaCl. The optimum NaCl concentrations for strains F6058 ^T and S2608 ^T were 2.0 % and 2.5 %, respectively. Phylogenetic analysis of the 16S rRNA gene sequences indicated that strains F6058 ^T and S2608 ^T share an evolutionary lineage with members of the genus Aequorivita . The isolates exhibited a 16S rRNA gene sequence similarity of 96.7 % to each other. Strains F6058 ^T exhibited the highest 16S rRNA gene sequence similarity to Aequorivita xiaoshiensis F64183 ^T (98.8 %), and S2608 ^T was most similar to Aequorivita capsosiphonis A71 ^T (96.9 %). Iso-C _15:0 , anteiso-C _15:0 and iso-C _17:0 3-OH were the major fatty acids of strains F6058 ^T and S2608 ^T . The sole respiratory quinone of both isolates was menaquinone 6 (MK-6). The polar lipid profiles of the isolates both consisted of phosphatidylethanolamine and phosphoglycolipids; however, strain F6058 ^T exhibited one glycolipid, one aminolipid and two unidentified polar lipids, and strain S2608 ^T also had two glycolipids and one unidentified polar lipid. The DNA G+C contents of strains F6058 ^T and S2608 ^T were 34.6 % and 37.7 mol%, respectively. Based on their phenotypic, chemotaxonomic and genomic characteristics, strains F6058 ^T and S2608 ^T were considered to represent novel species of the genus Aequorivita , for which the names Aequorivita sediminis sp. nov. and Aequorivita marina sp. nov. were proposed. The type strains are F6058 ^T (=KCTC 92653 ^T =MCCC 1H01358 ^T ) and S2608 ^T (KCTC 92652 ^T =MCCC 1H01361 ^T ).