PMID:22145760
| Citation |
López-Cuevas, O, Castro-Del Campo, N, León-Félix, J, González-Robles, A and Chaidez, C (2011) Characterization of bacteriophages with a lytic effect on various Salmonella serotypes and Escherichia coli O157:H7. Can. J. Microbiol. 57:1042-51 |
|---|---|
| Abstract |
Four phages isolated from cattle and poultry feces were analyzed for their ability to lyse Salmonella serotypes and Escherichia coli O157:H7. The phage one-step growth curves, morphology, and genetic characteristics were determined. All phages showed a lytic effect on various Salmonella serotypes and E. coli O157:H7, which lysed at least 70% of the 234 strains tested. The phages had latent periods ranging from 10 to 15 min and generation times of 30 to 45 min, while burst size fluctuated between 154 and 426 PFU/cell. Phages morphology showed isometric and elongated heads and rigid contractile tails, consistent with morphology of the Myoviridae family. Phages' DNA dendrograms showed a distinctive RFLP when digested by HindIII and EcoRV, and SDS-PAGE profile showed distinctive proteins expression as well. In vitro phage challenge showed a total reduction of E. coli O157:H7, Salmonella Typhimurium and Saintpaul counts at 2 h, whereas for Salmonella Montevideo a reduction and retardation growth, at a multiplicity of infection (MOI) of 100, was observed; however, under a MOI of 10 000, no viable cells were detected after 4 h. The wide host ranges of these phages suggested they could be used for simultaneous biocontrol of some Salmonella serotypes and E. coli O157:H7. |
| Links |
PubMed Online version:10.1139/w11-099 |
| Keywords |
Animals; Bacteriophages/genetics; Bacteriophages/growth & development; Bacteriophages/isolation & purification; Bacteriophages/physiology; Bacteriophages/ultrastructure; Cattle; DNA Restriction Enzymes; DNA, Viral/genetics; Escherichia coli O157/virology; Feces/virology; Host Specificity/physiology; Polymorphism, Restriction Fragment Length; Poultry/virology; Salmonella/virology |
| edit table |
Significance
You can help EcoliWiki by summarizing why this paper is useful
Useful Materials and Methods
You can help Ecoliwiki by describing the useful materials (strains, plasmids, antibodies, etc) described in this paper.
Annotations
<annotationlinks/>
EcoliWiki Links
Add links to pages that link here (e.g. gene, product, method pages)
See also
References
See Help:References for how to manage references in EcoliWiki.