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Abstract

Strain HHS 31, a Gram-positive, motile, rod-shaped, non-spore-forming, alkaliphilic bacterium, was isolated from the melt water of a glacier. Phenotypic and chemotaxonomic characteristics indicate that strain HHS 31 is related to species of the genus . The 16S rRNA gene sequence similarities between HHS 31 and strains of known species confirm that it is closely related to members of the genus (93–99 %) and that it exhibits >97 % similarity with DSM 20416 (98.9 %), DSM 14480 (98.0 %), JCM 12280 (97.9 %) and DSM 14481 (97.4 %). Phylogenetic analysis based on the 16S rRNA gene sequence further confirms the affiliation of HHS 31 with the genus . However, the levels of DNA–DNA relatedness between HHS 31 and JCM 12280, DSM 20416, DSM 14481 and DSM 14480 are 50, 63, 67 and 28 %, respectively. Strain HHS 31 also differs from these four closely related species in terms of a number of phenotypic traits. The phenotypic, chemotaxonomic and phylogenetic data suggest that HHS 31 merits the status of a novel species, for which the name sp. nov. is proposed. The type strain is HHS 31 (=LMG 23471=IAM 15368).

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2006-12-01
2019-11-13
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Neighbour-joining tree based on 16S rRNA gene sequences showing the phylogenetic relationship between strain HHS 31 and species of the genus . [PDF](13 KB)

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Fatty acid compositions (%) of sp. nov. HHS 31 and related type strains. [PDF](25 KB)

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