[Genetic analysis of lactose-fermenting Salmonella typhimurium isolated in Rio de Janeiro].
Lactose fermenting Salmonella typhimurium are endemic in São Paulo, but not in Rio de Janeiro Two isolations are described from the latter city. These Rio de Janeiro strains have a plasmid of 7.4 megadaltons. These plasmids were not auto-transferable, were thermostable and were not eliminated by acridine orange. One of these strains arose from a plasmid that had the lactose operon repressed, leading us to speculate about the evolution of the lactose fermenting character in Brazilian Salmonella.
Câmara
F P
FP
Cardoso
M A
MA
de Almeida
D F
DF
D001938:Brazil; D003227:Conjugation, Genetic; D005285:Fermentation; D007785:Lactose / Q000378:metabolism*; D007786:Lactose Factors / Q000235:genetics* / Q000502:physiology; D010957:Plasmids / Q000235:genetics*; D011815:R Factors / Q000235:genetics* / Q000502:physiology; D012486:Salmonella typhimurium / Q000235:genetics* / Q000378:metabolism
D007785:Lactose
Análise genética de Salmonella typhimurium fermentadoras de lactose isoladas no Rio de Janeiro.