sp. nov., isolated from deep-sea water.

A Gram-stain-negative, rod-shaped, red-pigmented, aerobic bacterium, strain M2, was isolated from a seawater sample collected from the western Pacific Ocean at a depth of 1000 m and characterized using polyphasic taxonomy. Strain M2 was catalase-positive and oxidase-negative. Cells grew at 4-33 °C (optimum, 25 °C), at pH 6-9 (optimum, 7) and with 0-4 % (w/v) (optimum, 1 %) NaCl. Phylogenetic trees based on 16S rRNA gene sequences showed that strain M2 was associated with the genus . Strain M2 showed the highest 16S rRNA gene sequence similarities to CCUG 39621 (95.7 %), XTM003 (95.6 %) and Tibet-IIU11 (95.2 %). The DNA G+C content was 59.98 mol%. Strain M2 contained Cω5 (25.0 %), iso-C (23.9 %) and summed feature 3 (Cω6 and/or Cω7, 20.4 %) as major cellular fatty acids. The major quinone of strain M2 was menaquinone 7 and the major polar lipid was phosphatidylethanolamine. The major polyamine of strain M2 was -homospermidine. The phylogenetic analysis and physiological and biochemical data showed that strain M2 should be classified as representing a novel species of the genus , for which the name sp. nov. is proposed. The type strain is M2 (=CCTCC AB 2017185=KCTC 62120).