Halomonas maris sp. nov., a moderately halophilic bacterium isolated from sediment in the southwest Indian Ocean

A halophilic, Gram-staining-negative, rod-shaped, flagellated and motile bacterium, strain QX-1 T, was isolated from deep-sea sediment at a depth of 3332 m in the southwestern Indian Ocean. Strain QX-1 T growth observed 4–50 °C (optimum 37 °C), pH 5.0–11.0 7.0), 3–25% NaCl (w/v; optimum 7%), it did not grow without NaCl. phylogenetic analysis based on 16S rRNA gene placed genus Halomonas most closely related to sulfidaeris (97.9%), zhaodongensis (97.8%), songnenensis (97.6%), hydrothermalis (97.4%), subterranea (97.3%), salicampi (97.1%), arcis (97.0%). DNA–DNA hybridization (  10%) are C16:0 (25.5%), C17:0 cyclo (14.0%), C19:0 ω8c (18.7%), summed feature 8 (C18:1 ω7c and/or C18:1 ω6c, 18.1%). The polar lipids mainly diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, unidentified phospholipid, aminophospholipid, five lipids. main respiratory quinone is Q-9. G + C content its chromosomal DNA 54.4 mol%. Its fatty acid profile, quinones, also support placement Halomonas. These phylogenetic, phenotypic, chemotaxonomic analyses indicate that novel species, for which name maris proposed. type (= MCCC 1A17875T = KCTC 82198 T = NBRC 114670 T).