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Genes encoding tetracycline resistance in a full-scale municipal wastewater treatment plant investigated during one year
Linköping University, Department of Clinical and Experimental Medicine, Medical Microbiology . Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Medical Microbiology . Linköping University, Faculty of Health Sciences.
2010 (English)In: JOURNAL OF WATER AND HEALTH, ISSN 1477-8920, Vol. 8, no 2, 247-256 p.Article in journal (Refereed) Published
Abstract [en]

Tetracycline-resistant bacteria and genes encoding tetracycline resistance are common in anthropogenic environments. We studied how wastewater treatment affects the prevalence and concentration of two genes, tetA and tetB, that encode resistance to tetracycline. Using real-time polymerase chain reaction (PCR) we analysed wastewater samples collected monthly for one year at eight key-sites in a full-scale municipal wastewater treatment plant (WWTP). We detected tetA and tetB at each sampling site and the concentration of both genes, expressed per wastewater volume or per total-DNA, decreased over the treatment process. The reduction of tetA and tetB was partly the result of the sedimentation process. The ratio of tetA and tetB, respectively, to total DNA was lower in or after the biological processes. Taken together our data show that tetracycline resistance genes occur throughout the WWTP, and that the concentrations are reduced under conventional operational strategies.

Place, publisher, year, edition, pages
Iwa Publishing , 2010. Vol. 8, no 2, 247-256 p.
Keyword [en]
LUX (TM) real-time polymerase chain reaction (PCR), tetA, tetB, tetracycline, wastewater treatment plant
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-57394DOI: 10.2166/wh.2009.159ISI: 000278433000005OAI: oai:DiVA.org:liu-57394DiVA: diva2:325550
Available from: 2010-06-18 Created: 2010-06-18 Last updated: 2010-06-18

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Börjesson, Stefan

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