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. 1982 Jul;151(1):281–287. doi: 10.1128/jb.151.1.281-287.1982

Two independent conjugal transfer systems operating in Bacteroides fragilis V479-1.

C J Smith, R A Welch, F L Macrina
PMCID: PMC220239  PMID: 7085560

Abstract

Bacteroides fragilis V479-1 (also designated strain 92) has previously been shown to contain a conjugative plasmid, pBF4, that specifies resistance to clindamycin (Cc). A report of inducible tetracycline (Tc) resistance in this strain suggested that this phenotype was also plasmid associated (G. Privitera et al., Nature [London] 278:657-659, 1979) and prompted further investigation. Mating experiments with V469-1 and a Cc-sensitive derivative of V479-1, V598, showed that Tc resistance transfer occurred by a conjugation-like event which was insensitive to DNase, was not mediated by donor culture cell-free filtrates, and required cell-to-cell contact. Results from transfer experiments with V479-1 indicated that Tc and Cc resistance determinants were not linked and segregated independently in matings. Progeny recovered from matings with the V479-1 or V598 donor strain were able to transfer the Tc resistance marker in secondary crosses. Tc resistance transfer from V479-1 or V598 was greatly stimulated by pregrowth in the presence of Tc but not Cc. pBF4-mediated Cc resistance transfer was not affected by pregrowth in the presence of Cc or Tc. Filter blot DNA hybridization studies revealed that pBF4 sequences were not involved in either the Tc resistant phenotype or its associated conjugal transfer properties. The Tc resistance transfer element was not associated with pBF4 or any other extrachromosomal DNA element.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Finegold S. M., Attebery H. R., Sutter V. L. Effect of diet on human fecal flora: comparison of Japanese and American diets. Am J Clin Nutr. 1974 Dec;27(12):1456–1469. doi: 10.1093/ajcn/27.12.1456. [DOI] [PubMed] [Google Scholar]
  2. Franke A. E., Clewell D. B. Evidence for a chromosome-borne resistance transposon (Tn916) in Streptococcus faecalis that is capable of "conjugal" transfer in the absence of a conjugative plasmid. J Bacteriol. 1981 Jan;145(1):494–502. doi: 10.1128/jb.145.1.494-502.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Guerry P., LeBlanc D. J., Falkow S. General method for the isolation of plasmid deoxyribonucleic acid. J Bacteriol. 1973 Nov;116(2):1064–1066. doi: 10.1128/jb.116.2.1064-1066.1973. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Hansen J. B., Olsen R. H. Isolation of large bacterial plasmids and characterization of the P2 incompatibility group plasmids pMG1 and pMG5. J Bacteriol. 1978 Jul;135(1):227–238. doi: 10.1128/jb.135.1.227-238.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Macrina F. L., Kopecko D. J., Jones K. R., Ayers D. J., McCowen S. M. A multiple plasmid-containing Escherichia coli strain: convenient source of size reference plasmid molecules. Plasmid. 1978 Jun;1(3):417–420. doi: 10.1016/0147-619x(78)90056-2. [DOI] [PubMed] [Google Scholar]
  6. Macrina F. L., Weatherly G. G., Curtiss R., 3rd R6K plasmid replication: influence of chromosomal genotype in minicell-producing strains of Escherichia coli K-12. J Bacteriol. 1974 Dec;120(3):1387–1400. doi: 10.1128/jb.120.3.1387-1400.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Mays T. D., Smith C. J., Welch R. A., Delfini C., Macrina F. L. Novel antibiotic resistance transfer in Bacteroides. Antimicrob Agents Chemother. 1982 Jan;21(1):110–118. doi: 10.1128/aac.21.1.110. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Meyers J. A., Sanchez D., Elwell L. P., Falkow S. Simple agarose gel electrophoretic method for the identification and characterization of plasmid deoxyribonucleic acid. J Bacteriol. 1976 Sep;127(3):1529–1537. doi: 10.1128/jb.127.3.1529-1537.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Privitera G., Sebald M., Fayolle F. Common regulatory mechanism of expression and conjugative ability of a tetracycline resistance plasmid in Bacteroides fragilis. Nature. 1979 Apr 12;278(5705):657–659. doi: 10.1038/278657a0. [DOI] [PubMed] [Google Scholar]
  10. Rigby P. W., Dieckmann M., Rhodes C., Berg P. Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I. J Mol Biol. 1977 Jun 15;113(1):237–251. doi: 10.1016/0022-2836(77)90052-3. [DOI] [PubMed] [Google Scholar]
  11. Shoemaker N. B., Smith M. D., Guild W. R. DNase-resistant transfer of chromosomal cat and tet insertions by filter mating in Pneumococcus. Plasmid. 1980 Jan;3(1):80–87. doi: 10.1016/s0147-619x(80)90036-0. [DOI] [PubMed] [Google Scholar]
  12. Smith C. J., Markowitz S. M., Macrina F. L. Transferable tetracycline resistance in Clostridium difficile. Antimicrob Agents Chemother. 1981 Jun;19(6):997–1003. doi: 10.1128/aac.19.6.997. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
  14. Tally F. P., Snydman D. R., Gorbach S. L., Malamy M. H. Plasmid-mediated, transferable resistance to clindamycin and erythromycin in Bacteroides fragilis. J Infect Dis. 1979 Jan;139(1):83–88. doi: 10.1093/infdis/139.1.83. [DOI] [PubMed] [Google Scholar]
  15. Tally F. P., Snydman D. R., Gorbach S. L., Malamy M. H. Plasmid-mediated, transferable resistance to clindamycin and erythromycin in Bacteroides fragilis. J Infect Dis. 1979 Jan;139(1):83–88. doi: 10.1093/infdis/139.1.83. [DOI] [PubMed] [Google Scholar]
  16. Thayer R. E. An improved method for detecting foreign DNA in plasmids of Escherichia coli. Anal Biochem. 1979 Sep 15;98(1):60–63. doi: 10.1016/0003-2697(79)90705-x. [DOI] [PubMed] [Google Scholar]
  17. Tinnell W. H., Macrina F. L. Extrachromosomal elements in a variety of strains representing the Bacteroides fragilis group of organisms. Infect Immun. 1976 Oct;14(4):955–964. doi: 10.1128/iai.14.4.955-964.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Varel V. H., Bryant M. P. Nutritional features of Bacteroides fragilis subsp. fragilis. Appl Microbiol. 1974 Aug;28(2):251–257. doi: 10.1128/am.28.2.251-257.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Welch R. A., Jones K. R., Macrina F. L. Transferable lincosamide-macrolide resistance in Bacteroides. Plasmid. 1979 Apr;2(2):261–268. doi: 10.1016/0147-619x(79)90044-1. [DOI] [PubMed] [Google Scholar]
  20. Welch R. A., Macrina F. L. Physical characterization of Bacteroides fragilis R plasmid pBF4. J Bacteriol. 1981 Feb;145(2):867–872. doi: 10.1128/jb.145.2.867-872.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]

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