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Abstract

A Gram-stain-negative bacterium, designated IO390501, was isolated from a sea water sample from the Indian Ocean and taxonomically characterized using a polyphasic approach. The strain is phylogenetically close to '' L15 and IPL18, with 16S rRNA gene sequence similarity of 97.7 and 97.4 %, respectively. The genome of IO390501 has a DNA G+C content of 61.9 mol% for the 3.9 Mb chromosome. Genome-based phylogenetic trees indicated that IO390501 clusters as an independent lineage with '' L15. Genomic relatedness of DNA–DNA hybridization between IO390501 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 IO390501 are summed feature 8 (Cω7/ ω6) and C. IO390501 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 IO390501 represents a novel species of the genus for which the name sp. nov. is proposed. The type strain is IO390501.

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/content/journal/ijsem/10.1099/ijsem.0.003759
2019-10-09
2019-10-22
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