Pseudofulvibacter marinus sp. nov., isolated from seawater

A novel Gram-stain-negative, rod-shaped, non-spore-forming, non-flagellated, strictly aerobic strain, designated RZW2-1^T, was isolated from coastal seawater of the Yellow Sea in China (35.475° N 119.613° E). The organism grew optimally at 24 °C, at pH 7.0 and in the presence of 3.0 % (w/v) NaCl. The strain requires seawater or artificial seawater for growth and NaCl alone does not support growth. Strain RZW2-1^T contained MK-6 as the only respiratory quinone and iso-C_15 : 0, iso-C_15 : 1 G and 10-methyl C_16 : 0 and/or iso-C_17 : 1ω9c as the dominant fatty acids. The polar lipids of strain RZW2-1^T were four unidentified phospholipids (PL1-PL4), two unknown lipids (L1, L2) and one unidentified aminolipid (AL1). The DNA G+C content of strain RZW2-1^T was 32 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that the novel strain was most closely related to the type strain of the only described species of genus Pseudofulvibacter, Pseudofulvibacter geojedonensis YCS-9^T, with 95.1 % 16S rRNA gene sequence similarity. On the basis of polyphasic analyses, strain RZW2-1^T represents a novel species of the genus Pseudofulvibacter, for which the name Pseudofulvibacter marinus sp. nov. is proposed. The type strain is RZW2-1^T ( = JCM 30826^T = MCCC 1K00695^T).