Chryseoglobus indicus sp. nov., isolated from deep sea water

A novel Gram-stain-positive, motile, aerobic, non-spore-forming and slender rod-shaped actinobacterium, designated strain CTD02-10-2^T, was isolated from deep sea water of the Indian Ocean. Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain CTD02-10-2^T was grouped into a separated branch with Chryseoglobus frigidaquae JCM 14730^T (98.4 % nucleotide sequence identity). The respiratory quinones were menaquinones with 11, 12, 13 and 14 isoprene units and anteiso-C_15 : 0, iso-C_16 : 0, anteiso-C_15 : 1 A and anteiso-C_17 : 0 were the major fatty acids. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol and three unknown glycolipids. The genome of strain CTD02-10-2^T was 2.59 Mb, with a DNA G+C content of 69.6 mol% and contained genes involved in the biosynthesis of alkylresorcinol, ansamycin, and carotenoids. In silico DNA-DNA hybridization and average nucleotide identity values for whole-genome sequence comparisons between strain CTD02-10-2^T and C. frigidaquae JCM 14730^T were clearly below the thresholds used for the delineation of a new species. Based on its morphological and chemotaxonomic characteristics, as well as genotypic data, strain CTD02-10-2^T was classified as a novel species of the genus Chryseoglobus, for which the name Chryseoglobus indicus sp. nov. is proposed. The type strain is CTD02-10-2^T (=JCM 33842^T=MCCC 1A16619^T).