title: Ribosomal RNA gene probes to detect intraspecies heterogeneity in Mycoplasma gallisepticum and M. synoviae.
abstract: Intraspecies genotypic heterogeneity among strains of Mycoplasma gallisepticum and M. synoviae was tested using genomic fingerprints with a ribosomal RNA (rRNA) gene probe. The organism's DNA was digested by a restriction endonuclease, electrophoresed, transferred to a nitrocellulose sheet, and hybridized with 32P-labeled pMC5 plasmid carrying the highly conserved rRNA genes of M. capricolum. The resulting hybridization patterns indicated a degree of genotypic heterogeneity among M. gallisepticum strains more pronounced than among the M. synoviae strains tested. Most importantly, the live vaccine F strain of M. gallisepticum could be distinguished from virulent field isolates of this species, enabling the detection and identification of the F strain in areas in which vaccination with this strain has taken place. Genomic fingerprints with an rRNA gene probe can thus be added to the battery of tools useful in taxonomy at the intraspecies level and in epidemiology of mycoplasmosis in poultry.
authors.affiliation: Department of Membrane and Ultrastructure Research, Hebrew University, Jerusalem, Israel.
authors.forename: D
authors.initials: D
authors.lastname: Yogev
authors.forename: S
authors.initials: S
authors.lastname: Levisohn
authors.forename: S H
authors.initials: SH
authors.lastname: Kleven
authors.forename: D
authors.initials: D
authors.lastname: Halachmi
authors.forename: S
authors.initials: S
authors.lastname: Razin
mesh_terms: D000818:Animals; D001426:Bacterial Proteins; D004262:DNA Restriction Enzymes; D004269:DNA, Bacterial / Q000032:analysis; D015246:Deoxyribonuclease EcoRI; D015247:Deoxyribonuclease HindIII; D015252:Deoxyribonucleases, Type II Site-Specific; D004591:Electrophoresis, Polyacrylamide Gel; D014644:Genetic Variation; D005838:Genotype; D009174:Mycoplasma / Q000145:classification / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D011200:Poultry / Q000382:microbiology; D012335:RNA, Ribosomal
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D012335:RNA, Ribosomal; D004262:DNA Restriction Enzymes; D015246:Deoxyribonuclease EcoRI; D015247:Deoxyribonuclease HindIII; C024404:BglII endonuclease; D015252:Deoxyribonucleases, Type II Site-Specific