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. 2006 Aug;72(8):5610-4.
doi: 10.1128/AEM.00364-06.

Quantitative PCR method for sensitive detection of ruminant fecal pollution in freshwater and evaluation of this method in alpine karstic regions

Georg H Reischer  1 , David C Kasper, Ralf Steinborn, Robert L Mach, Andreas H Farnleitner
Affiliations

Quantitative PCR method for sensitive detection of ruminant fecal pollution in freshwater and evaluation of this method in alpine karstic regions

Georg H Reischer et al. Appl Environ Microbiol. 2006 Aug.

Abstract

A quantitative TaqMan minor-groove binder real-time PCR assay was developed for the sensitive detection of a ruminant-specific genetic marker in fecal members of the phylum Bacteroidetes. The qualitative and quantitative detection limits determined were 6 and 20 marker copies per PCR, respectively. Tested ruminant feces contained an average of 4.1 x 10(9) marker equivalents per g, allowing the detection of 1.7 ng of feces per filter in fecal suspensions. The marker was detected in water samples from a karstic catchment area at levels matching a gradient from negligible to considerable ruminant fecal influence (from not detectable to 10(5) marker equivalents per liter).

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