1887

Abstract

Three filamentous gliding bacteria from the German Collection of Microorganisms and Cell Cultures, Hp g11, Hp g471 and Hp g472, were subjected to a phylogenetic analysis. These organisms had previously been classified as members of the genus based on their growth physiology and morphology. However, a taxonomic assignment at the species level had not been carried out. Analysis of 16S rRNA sequences now confirmed the close relationship of strain Hp g472 to DSM 785 (98.6 % nucleotide identity) and DSM 7119 (97.7 %). The results of DNA–DNA hybridization experiments further implied that strain Hp g472 should be classified as a distinct species. The DNA G+C content of strain Hp g472 was 49.9 mol%. The major quinone was MK-10 and the predominant cellular fatty acids were C, C and C. Based on phenotypic, chemotaxonomic and phylogenetic data it was concluded that strain Hp g472 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is Hp g472 (=DSM 52871=NBRC 112829). In contrast to Hp g472, the strains Hp g11 and Hp g471 exhibited closest 16S rRNA gene sequence similarity (>99 %) with ‘’ Hp a2. The distinctive genotypic and phenotypic properties of the latter supported the revival of the name as ( Reichenbach & Golecki, 1975) sp. nov., nom. rev. We propose the previously deposited reference strain DSM 589=NBRC 112828 as the type strain.

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2017-07-01
2021-07-25
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