sp. nov., a novel bacterium isolated from a coastal phytoplankton bloom in Xiamen.

A Gram-stain-negative, non-motile, ovoid or short rod shaped and aerobic marine bacterium, designated as strain LXJ103, was isolated from a coastal phytoplankton bloom in Xiamen, PR China. Cells were oxidase- and catalase-positive. Strain LXJ103 grew at 4-40 °C (optimum, 28-37 °C), at pH 6-10 (optimum, pH 8.5) and with 1-15 % (w/v) NaCl (optimum, 3 %). The major cellular fatty acids (>10 %) were iso-C 7/iso-C 6 (70.2 %) and C (10.3 %). The following polar lipids were found to be present: phosphatidylglycerol, phosphatidylethanolamine, two unidentified phospholipids and five unknown glycolipids. The predominant respiratory quinone was ubiquinone-10. Strain LXJ103 exhibited the highest 16S rRNA gene sequence similarity to D1-W8 (96.97 %). The phylogenetic trees based on 16S rRNA gene sequences showed that strain LXJ103 was a member of the genus . The draft genome size of strain LXJ103 is 3.05 Mb with a genomic G+C content of 61.22 mol%. The digital DNA-DNA genome hybridization value of strain LXJ103 compared with the most similar type strain CECT 8287 was 18.80 %. The average nucleotide identity value between strain LXJ103 and CECT 8287 was 72.60 %. On the basis of polyphasic data, strain LXJ103 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is LXJ103 (=CGMCC 1.19168=MCCC 1K06527=JCM 34778).