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1887

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 68, Issue 7

Evaluation of the genus Winogradsky 1888 (Approved Lists 1980) emend. Aruga 2002: reclassification of to gen. nov., comb. nov., and of to gen. nov., comb nov., with emended description of Free

Abstract

is the type genus of the in the of the , comprising nine species of sulfur-oxidising filamentous bacteria, which are variously autotrophic, heterotrophic or have mixed metabolic modes. Within the genus, four species show 16S rRNA gene identities lower the Yarza threshold for the rank of genus (94.5 %) – , , and – as they show no affiliation to extant genera, a polyphasic study was undertaken including biochemical, physiological and genomic properties and phylogeny based on the 16S rRNA gene (), recombination protein A (RecA), polynucleotide nucleotidyltransferase (Pnp), translation initiation factor IF-2 (InfB), glyceraldehyde-3-phosphate dehydrogenase (GapA), glutaminyl-tRNA synthetase (GlnS), elongation factor EF-G (FusA) and concatamers of 53 ribosomal proteins encoded by , and operons, all of which support the reclassification of these species. We thus propose gen. nov. and gen. nov. for which the type species are gen. nov., comb. nov. and gen. nov., comb. nov. We also propose that these genera are each circumscribed into novel families fam. nov. and fam. nov., and that and are circumscribed into fam. nov. and provide emended descriptions of and .

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): filamentous bacteria , Gammaproteobacteria , Thiofilum , Thiolinea , Thiothrix and Thiotrichales
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2018-07-01
2025-04-28
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Evaluation of the genus Thiothrix Winogradsky 1888 (Approved Lists 1980) emend. Aruga et al. 2002: reclassification of Thiothrix disciformis to Thiolinea disciformis gen. nov., comb. nov., and of Thiothrix flexilis to Thiofilum flexile gen. nov., comb nov., with emended description of Thiothrix
Int J Syst Evol Microbiol 68, 2226 (2018); https://doi.org/10.1099/ijsem.0.002816
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