scholarly journals Comparison of PCR and quantitative real-time PCR methods for the characterization of ruminant and cattle fecal pollution sources

2013 ◽  
Vol 47 (18) ◽  
pp. 6921-6928 ◽  
Author(s):  
Meredith R. Raith ◽  
Catherine A. Kelty ◽  
John F. Griffith ◽  
Alexander Schriewer ◽  
Stefan Wuertz ◽  
...  
2014 ◽  
Vol 80 (10) ◽  
pp. 3086-3094 ◽  
Author(s):  
Hyatt C. Green ◽  
Richard A. Haugland ◽  
Manju Varma ◽  
Hana T. Millen ◽  
Mark A. Borchardt ◽  
...  

ABSTRACTQuantitative real-time PCR (qPCR) assays that target the human-associated HF183 bacterial cluster within members of the genusBacteroidesare among the most widely used methods for the characterization of human fecal pollution in ambient surface waters. In this study, we show that a current TaqMan HF183 qPCR assay (HF183/BFDrev) routinely forms nonspecific amplification products and introduce a modified TaqMan assay (HF183/BacR287) that alleviates this problem. The performance of each qPCR assay was compared in head-to-head experiments investigating limits of detection, analytical precision, predicted hybridization to 16S rRNA gene sequences from a reference database, and relative marker concentrations in fecal and sewage samples. The performance of the modified HF183/BacR287 assay is equal to or improves upon that of the original HF183/BFDrev assay. In addition, a qPCR chemistry designed to combat amplification inhibition and a multiplexed internal amplification control are included. In light of the expanding use of PCR-based methods that rely on the detection of extremely low concentrations of DNA template, such as qPCR and digital PCR, the new TaqMan HF183/BacR287 assay should provide more accurate estimations of human-derived fecal contaminants in ambient surface waters.


2013 ◽  
Vol 47 (18) ◽  
pp. 6873-6882 ◽  
Author(s):  
Jared S. Ervin ◽  
Todd L. Russell ◽  
Blythe A. Layton ◽  
Kevan M. Yamahara ◽  
Dan Wang ◽  
...  

2011 ◽  
Vol 39 (5) ◽  
pp. 5905-5912 ◽  
Author(s):  
Gang Zhang ◽  
Mingming Zhao ◽  
Chao Song ◽  
Anxiong Luo ◽  
Jianfa Bai ◽  
...  

2010 ◽  
Vol 76 (14) ◽  
pp. 4886-4889 ◽  
Author(s):  
B. Fremaux ◽  
T. Boa ◽  
C. K. Yost

ABSTRACT Canada geese (Branta canadensis) are prevalent in North America and may contribute to fecal pollution of water systems where they congregate. This work provides two novel real-time PCR assays (CGOF1-Bac and CGOF2-Bac) allowing for the specific and sensitive detection of Bacteroides 16S rRNA gene markers present within Canada goose feces.


2006 ◽  
Vol 10 (4) ◽  
pp. 243-249 ◽  
Author(s):  
Alberto Casarin ◽  
Maddalena Martella ◽  
Roberta Polli ◽  
Emanuela Leonardi ◽  
Laura Anesi ◽  
...  

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