Transduction complicates the detection of conjugative ability in lysogenic salmonella strains.
When lysogenic salmonella strains were examined for conjugative ability in tri-parental crosses, false positive results were sometimes obtained because phage carried by the lysogenic strains multiplied on the intermediate salmonella recipient strain and then transduced its streptomycin/sulphonamide resistance plasmid to the final salmonella recipient strain. Back transfer of the plasmid to the lysogenic strains was also detected.
D003227:Conjugation, Genetic; D003433:Crosses, Genetic; D008242:Lysogeny; D011815:R Factors; D012486:Salmonella typhimurium / Q000235:genetics*; D014161:Transduction, Genetic