Taxonomy of Antarctic Flavobacterium species: description of Flavobacterium gillisiae sp. nov., Flavobacterium tegetincola sp. nov., and Flavobacterium xanthum sp. nov., nom. rev. and reclassification of [Flavobacterium] salegens as Salegentibacter salegens gen. nov., comb. nov

Int J Syst Evol Microbiol. 2000 May;50 Pt 3:1055-1063. doi: 10.1099/00207713-50-3-1055.

Abstract

16S rRNA phylogenetic analysis of a number of yellow- and orange-pigmented strains isolated from a variety of Antarctic habitats including sea ice, lakewater and cyanobacterial mats indicated a close relationship to the genus Flavobacterium but distinct from known Flavobacterium species. Phenotypic properties, DNA G+C content and whole-cell fatty acid profiles of the Antarctic strains were consistent with those of the genus Flavobacterium. DNA-DNA hybridization analysis indicated the presence of two distinct and novel genospecies each isolated from a different Antarctic habitat. From polyphasic taxonomic data it is proposed that the two groups represent new species with the following proposed names: Flavobacterium gillisiae (ACAM 601T) and Flavobacterium tegetincola (ACAM 602T). In addition polyphasic analysis of the species '[Cytophaga] xantha' (Inoue and Komagata 1976), isolated from Antarctic mud, indicated it was a distinct member of the genus Flavobacterium and was thus revived as Flavobacterium xanthum. Phylogenetic and fatty acid analyses also indicate that the species [Flavobacterium] salegens (Dobson et al. 1993), from Organic Lake, Antarctica, is misclassified at the genus level. It is proposed that this species belongs to a new genus, Salegentibacter salegens gen. nov., comb. nov.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antarctic Regions
  • Base Composition
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • DNA, Ribosomal / chemistry
  • DNA, Ribosomal / genetics
  • Fatty Acids / analysis
  • Flavobacterium / classification*
  • Flavobacterium / genetics*
  • Flavobacterium / metabolism
  • Gram-Negative Aerobic Bacteria / classification*
  • Gram-Negative Aerobic Bacteria / genetics*
  • Gram-Negative Aerobic Bacteria / metabolism
  • Molecular Sequence Data
  • Nucleic Acid Hybridization
  • Phenotype
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Seawater / microbiology*

Substances

  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • RNA, Ribosomal, 16S

Associated data

  • GENBANK/AF030380
  • GENBANK/U85887
  • GENBANK/U85888
  • GENBANK/U85889