DNase-resistant transfer of chromosomal cat and tet insertions by filter mating in pneumococcus
Journal Article
·
· Plasmid; (United States)
Genes for chloramphenicol resistance, Cm(r) and tetracycline resistance, Tc(r), which are present as heterologous insertions in the chromosomes of some clinical isolates of Streptococcus pneumoniae (pneumococcus) and derivative strains, were transferred at a low frequency to other pneumococci by a DNase-resistant filter mating process that resembles conjugation. Cotransfer of Cm(r) and Tc(r) was the most common event. Neither the donor strains nor the transconjugants contained detectable plasmids. Transconjugants acted as donors for transformation and for filter mating and had properties similar to those of the parent strain. The presence of the conjugative plasmid pIP501 in the donor did not appear to influence the transfer properties of the Cm(r) or Tc(r) determinants.
- Research Organization:
- Duke Univ., Durham, NC
- OSTI ID:
- 6760433
- Journal Information:
- Plasmid; (United States), Journal Name: Plasmid; (United States) Vol. 3; ISSN PLSMD
- Country of Publication:
- United States
- Language:
- English
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