Abstract
Strain 5675061T was isolated from a deep-sea microbial mat near hydrothermal vents within the Axial Seamount caldera on the Juan de Fuca Ridge (NE Pacific Ocean) and was taxonomically evaluated using a polyphasic approach. Morphological and chemotaxonomic properties are consistent with characteristics of the genus Streptomyces: aerobic Gram-stain-positive filaments that form spores, L,L-diaminopimelic acid in whole-cell hydrolysates, and iso-C16:0 as the major fatty acid. Phylogenetic analysis, genomic, and biochemical comparisons show close evolutionary relatedness to Streptomyces lonarensis NCL716T, S. bohaiensis 11A07T, and S. otsuchiensis OTB305T but genomic relatedness indices identify strain 5675061T as a distinct species. Based on a polyphasic characterization, identifying differences in genomic and taxonomic data, strain 5675061T represents a novel species, for which the name Streptomyces spiramenti sp. nov. is proposed. The type strain is 5675061T (=LMG 31896T = DSM 111793T).
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