Abstract
Three R6K-derived γ ori minireplicons were successfully transferred by conjugation from Escherichia coli to several species of pathogenic bacteria. The pFL129 replicon encodes the wild-type initiation replication protein π, while plasmids pFL130 and pAG101 encode mutant forms of the π protein conferring the plasmid copy-up phenotype. Plasmids could be transferred to all recipient species tested, although high efficiency conjugal transfer was only obtained with genera of the Enterobacteriaceae. The efficiency of plasmid transfer to all recipients was lower for the copy-up derivatives, pFL130 and pAG101, than for pFL129. The three γ ori replicons were stably maintained in all transconjugants except pFL129 in Listeria monocytogenes. The two mutant plasmids retained their copy-up phenotype in the new bacterial hosts.
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This study was supported by the Polish Ministry of Science through the Faculty of Biology, Warsaw University intramural grants, BW 1636/21 and BW 1680/20.
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Grudniak, A.M., Kraczkiewicz-Dowjat, A., Wolska, K.I. et al. Conjugal Transfer of Plasmid R6K γ ori Minireplicon Derivatives from Escherichia coli to Various Genera of Pathogenic Bacteria. Curr Microbiol 55, 549–553 (2007). https://doi.org/10.1007/s00284-007-9032-5
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DOI: https://doi.org/10.1007/s00284-007-9032-5