Detection of conjugal transfer systems in oral, black-pigmented Bacteroides spp.

AUTOR(ES)

Guiney, D G

RESUMO

Oral, black-pigmented Bacteroides spp. are important pathogens in oral anaerobic infections and dental disease. We detected conjugation systems in isolates of Bacteroides denticola and Bacteroides intermedius that transferred tetracycline resistance (Tetr) and penicillin resistance to Bacteroides buccae and to Bacteroides fragilis, an intestinal Bacteroides species. A cloned Tetr gene from B. fragilis hybridized to the transferable Tetr locus in the oral strains, indicating that genetic exchange occurs between these two groups of anaerobes.

Documentos Relacionados

• Transfer of conjugal elements in oral black-pigmented Bacteroides (Prevotella) spp. involves DNA rearrangements.
• Black-pigmented Bacteroides spp. in the human oral cavity.
• Black-pigmented Bacteroides spp. in human apical periodontitis.
• Long-wave UV light fluorescence for identification of black-pigmented Bacteroides spp.
• Antigenic Studies of Oral and Nonoral Black-Pigmented Bacteroides Strains