Abstract
A Gram-stain-negative bacterium, designated IO390501T, was isolated from a sea water sample from the Indian Ocean and taxonomically characterized using a polyphasic approach. The strain is phylogenetically close to 'Devosia lucknowensis' L15 and Devosia chinhatensis IPL18T, with 16S rRNA gene sequence similarity of 97.7 and 97.4 %, respectively. The genome of IO390501T has a DNA G+C content of 61.9 mol% for the 3.9 Mb chromosome. Genome-based phylogenetic trees indicated that IO390501T clusters as an independent lineage with 'D. lucknowensis' L15. Genomic relatedness of in silico DNA-DNA hybridization between IO390501T and phylogenetic neighbours ranged from 18.8 to 21.5 %, below the cutoff of 70 %, and corresponding average nucleotide identity values were between 71.4 and 79.0 %, lower than the 95.0 % threshold. The predominant cellular fatty acids of IO390501T are summed feature 8 (C18 : 1ω7c/C18 : 1ω6c) and C16 : 0. IO390501T contains ubiquinone-10 as the sole respiratory quinone, and phosphatidylglycerol and glycolipids as the major polar lipids. On the basis of the results of phenotypic, chemotaxonomic and genetic analyses, strain IO390501T represents a novel species of the genus Devosia for which the name Devosia indica sp. nov. is proposed. The type strain is IO390501T.
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