Aliidiomarina indica sp. nov., isolated from deep seawater

A Gram-stain-negative, rod-shaped bacterial strain, designated SW123(T), was isolated from a deep-sea water sample collected from the Indian Ocean. Strain SW123(T) was strictly aerobic, catalase- and oxidase-positive. The predominant cellular fatty acids were iso-C-15:0, iso-C-17:0 and summed feature 9 (comprising C-16:0-methyl or iso-C-17:1 omega 9c). Ubiquinone-8 was the sole respiratory quinone. The major polar lipids consisted of diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylglycerol. The genomic DNA G+C content was 49.4 mol%. 16S rRNA gene sequence analysis showed that strain SW123(T) was closely related to Aliidiomarina shirensis AIST (96.7 % sequence similarity), Aliidiomarina iranensis GBPy7(T) (96.3%), Aliidiomarina haloalkalitolerans AK5(T) (96.0%) and Aliidiomarina celeris F3105(T) (95.9%). Phylogenetic trees based on 16S rRNA gene sequences showed that strain SW123(T) represented a novel member of the genus Aliidiomarina, forming a distinct cluster with A. celeris F3105(T). On the basis of phylogenetic inference and phenotypic characteristics, we propose that strain SW123(T) represents a novel species of the genus Aliidiomarina, with the name Aliidiomarina indica sp. nov. The type strain is SW123(T) (=CGMCC1.16169(T)=KCTC 82234(T)).