1887

Abstract

Five Gram-negative, motile, spiral-shaped strains were isolated from a sulfide spring (D-412), active sludge of wastewater (D-419, D-420, D-424) and industrial wastewater (D-416). Comparative 16S rRNA gene sequence analysis showed that the isolates belong to the family , within the class , but fall into a distinct cluster. On the basis of phenotypic, chemotaxonomic and phylogenetic data, a new genus, gen. nov., is proposed, including five species. The type species of the genus is sp. nov. (type strain D-419=DSM 12825=CIP 107340=VKM B-2350) and other novel members of the genus are sp. nov. (type strain D-412=DSM 12827=VKM B-2352), comb. nov. (basonym ), comb. nov. (basonym ) and comb. nov. (basonym ). Using the same criteria, isolate D-416 (=DSM 12826) was identified as a strain of [] . Strain D-416, the type strain of [.] and the type strain of [] form a distinct cluster within the family (97–97·2 % 16S rRNA gene sequence similarity) and share phenotypic and chemotaxonomic properties. Therefore, it is proposed that these strains are reclassified as members of a new genus, gen. nov., as comb. nov. (the type species) and comb. nov., respectively.

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2006-03-01
2019-12-14
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Supplements

vol. , part 3, pp. 569 - 576

Strains used in the study, Fatty acid content and DNA-DNA relatedness between strains.

Electron micrographs of cells of D-419 and D-412 and phase contrast micrographs of cells of D-412 .

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