title: Extensive 16S rRNA gene sequence diversity in Campylobacter hyointestinalis strains: taxonomic and applied implications.
abstract: Phylogenetic relationships of Campylobacter hyointestinalis subspecies were examined by means of 16S rRNA gene sequencing. Sequence similarities among C. hyointestinalis subsp. lawsonii strains exceeded 99.0%, but values among C. hyointestinalis subsp. hyointestinalis strains ranged from 96.4 to 100%. Sequence similarities between strains representing the two different subspecies ranged from 95.7 to 99.0%. An intervening sequence was identified in certain of the C. hyointestinalis subsp. lawsonii strains. C. hyointestinalis strains occupied two distinct branches in a phylogenetic analysis of the genus Campylobacter, emphasizing the need for multiple strain analysis when using 16S rRNA gene sequence comparisons for taxonomic investigations.
authors.affiliation: Department of Medical Microbiology, University of Aberdeen, Foresterhill, UK. csh@svs.dk
authors.forename: C S
authors.initials: CS
authors.lastname: Harrington
authors.forename: S L
authors.initials: SL
authors.lastname: On
mesh_terms: D000818:Animals; D001483:Base Sequence; D002167:Campylobacter / Q000145:classification* / Q000235:genetics*; D002169:Campylobacter Infections / Q000382:microbiology / Q000662:veterinary; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D003967:Diarrhea / Q000662:veterinary; D020459:Genes, rRNA; D014644:Genetic Variation; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D017422:Sequence Analysis, DNA; D013270:Stomach / Q000382:microbiology; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S