1887

Abstract

The taxonomic positions of two actinobacterial strains isolated from Mariana Trench sediment were established using a combination of genotypic and phenotypic data. The strains, isolates MT2.1 and MT2.2, formed a distinct phyletic line in the 16S rRNA gene tree together with NCIMB 14084. The isolates had chemical and phenotypic properties typical of members of the genus and could be distinguished sharply from one another and from the type strains of and using DNA–DNA relatedness data. A range of phenotypic properties served to distinguish the two novel strains from one another and from the type strains of established species. The G+C contents of the DNAs of strains MT2.1 and MT2.2 were 66.8 and 69.1 mol%, respectively. It is evident that the two isolates merit recognition as novel species within the genus . The names proposed for these taxa are sp. nov. (type strain MT2.1=DSM 17574=NCIMB 14081) and sp. nov. (type strain MT2.2=DSM 17575=NCIMB 14084).

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2006-10-01
2020-01-19
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