1887

Abstract

The taxonomic positions of three thermophilic actinomycetes isolated from arid soil samples were established by using a polyphasic approach. The organisms had chemical and morphological features that were consistent with their classification in the genus . 16S rRNA gene sequence data supported the classification of the isolates in the genus and showed that they formed distinct branches in the subclade. DNA–DNA relatedness studies between the isolates and their phylogenetic neighbours showed that they belonged to distinct genomic species. The three isolates were readily distinguished from one another and from the type strains of species classified in the subclade based on a combination of phenotypic properties and by genomic fingerprinting. Consequently, it is proposed that the three isolates be classified in the genus as representatives of sp. nov. (type strain GY307 = NCIMB 14709 = NRRL B-24844), sp. nov. (type strain NMG112 = NCIMB 14711 = NRRL B-24848) and sp. nov. (type strain SF45 = NCIMB 14705 = NRRL B-24845).

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2012-06-01
2019-12-05
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