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  • Title: [Conjugation in Rhodopseudomonas sphaeroides mediated by R plasmids].
    Author: Kameneva SV, Polivtseva TP, Kopteva AV, Muronets EM.
    Journal: Genetika; 1982 Sep; 18(9):1433-41. PubMed ID: 6216140.
    Abstract:
    Plasmids R68.45, RP4, RP4::Mu cts62, RP1ts::Tn10, RP1ts::Tn9, Rts1 and RP41 were transferred into cells of photosynthetic nitrogen-fixation bacterium Rhodopseudomonas sphaeroides from Escherichia coli and Pseudomonas aeruginosa. The transfer of plasmids occurred with high frequency of 10(-1) to 10(-2) per donor cell in all cases. Mobilization of R. sphaeroides 2R chromosome was obtained by RP4 and Rts1 plasmids at a frequency of 10(-7) to 10(-8) per donor cell in all cases. Mobilization of R. sphaeroides 2R chromosome was obtained by RP4 and Rts1 plasmids at a frequency of 10(-7) to 10(-8) per donor cell. Bacteriophage Mu cts62 could be induced from the plasmid DNA in R. sphaeroides 2R cells and was capable of the lytic growth and producing phage progeny. It was demonstrated that an increase in the efficiency of donor chromosomal genes transfer into recipient cells could be achieved in crosses with the donor carrying RP4::Mcts62 plasmid.
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