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  • Title: The virulence plasmids of Salmonella serovars typhimurium, choleraesuis, dublin, and enteritidis, and the cryptic plasmids of Salmonella serovars copenhagen and sendai belong to the same incompatibility group, but not those of Salmonella serovars durban, gallinarum, give, infantis and pullorum.
    Author: Ou JT, Baron LS, Dai XY, Life CA.
    Journal: Microb Pathog; 1990 Feb; 8(2):101-7. PubMed ID: 2348777.
    Abstract:
    We examined the compatibility of the Salmonella virulence plasmids of serovars choleraesuis, dublin, enteritidis, gallinarum and pullorum and the cryptic Salmonella plasmids of serovars copenhagen, durban, give, infantis and sendai, with the 90 kilobase pair (kb) virulence plasmid of S. typhimurium. The 90 kb virulence plasmid of S. typhimurium in the form of pWR33, a cointegrate of F'::Tn10lac+ts and the 90 kb virulence plasmid, was transferred by bacterial conjugation into the Salmonella strains (except for S. sendai). The compatibility of their plasmids with the 90 kb virulence plasmid of S. typhimurium was then tested. Separately, a 90 kb virulence plasmid tagged with Tn5 was transformed into the S. sendai strain. The 90 kb virulence plasmid of S. typhimurium was found to be incompatible with the plasmids of serovars choleraesuis, copenhagen, dublin, enteritidis, and sendai, but compatible with the plasmids of serovars durban, gallinarum, give, infantis, and pullorum.
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