Development and application of real-time PCR assays for quantification of genes encoding tetracycline resistance

Yu, Zhongtang, Michel, Frederick C., Hansen, Glenn, Wittum, Thomas and Morrison, Mark (2005) Development and application of real-time PCR assays for quantification of genes encoding tetracycline resistance. Applied and Environmental Microbiology, 71 11: 6926-6933. doi:10.1128/AEM.71.11.6926-6933.2005

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Author Yu, Zhongtang
Michel, Frederick C.
Hansen, Glenn
Wittum, Thomas
Morrison, Mark
Title Development and application of real-time PCR assays for quantification of genes encoding tetracycline resistance
Journal name Applied and Environmental Microbiology   Check publisher's open access policy
ISSN 0099-2240
1098-5336
Publication date 2005-11-01
Sub-type Article (original research)
DOI 10.1128/AEM.71.11.6926-6933.2005
Open Access Status File (Publisher version)
Volume 71
Issue 11
Start page 6926
End page 6933
Total pages 8
Place of publication Washington, D.C. USA
Publisher American Society for Microbiology
Language eng
Subject 03 Chemical Sciences
Abstract We report here the development, validation, and use of three real-time PCR assays to quantify the abundance of the following three groups of tetracycline resistance genes: tet(A) and tet(C); tet(G); and tet genes encoding ribosomal protection proteins, including tet(M), tet(O), tetB(P), tet(Q), tet(S), tet(T), and tet(W). The assays were validated using known numbers of sample-derived tet gene templates added to microbiome DNA. These assays are both precise and accurate over at least 6 log tet gene copies. New tet gene variants were also identified from cloned tet amplicons as part of this study. The utility of these real-time PCR assays was demonstrated by quantifying the three tet gene groups present in bovine and swine manures, composts of swine manure, lagoons of hog house effluent, and samples from an Ekokan upflow biofilter system treating hog house effluent. The bovine manures were found to contain fewer copies of all three groups of tet genes than the swine manures. The composts of swine manures had substantially reduced tet gene abundance (up to 6 log), while lagoon storage or the upflow biofilter had little effect on tet gene abundance. These results suggest that the method of manure storage and treatment may have a substantial impact on the persistence and dissemination of tet genes in agricultural environments. These real-time PCR assays provide rapid, quantitative, cultivation-independent measurements of 10 major classes of tet genes, which should be useful for ecological studies of antibiotic resistance.
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemistry and Molecular Biosciences
 
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Created: Fri, 18 Dec 2009, 23:51:14 EST by Ms Lynette Adams on behalf of School of Chemistry & Molecular Biosciences