Comparison of droplet digital PCR and quantitative real-time PCR in mcrA-based methanogen community analysis

Autor: Tae Gwan Kim, So-Yeon Jeong, Kyung-Suk Cho
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Biotechnology Reports, Vol 4, Iss C, Pp 1-4 (2014)
Druh dokumentu: article
ISSN: 2215-017X
DOI: 10.1016/j.btre.2014.06.010
Popis: Two different quantitative PCR platforms, droplet digital PCR (dd-PCR) and quantitative real-time PCR (qPCR), were compared in a mcrA-based methanogen community assay that quantifies ten methanogen sub-groups. Both technologies exhibited similar PCR efficiencies over at least four orders of magnitude and the same lower limits of detection (8 copies μL-DNA extract−1). The mcrA-based methanogen communities in three full-scale anaerobic digesters were examined using the two technologies. dd-PCR detected seven groups from the digesters, while qPCR did five groups, indicating that dd-PCR is more sensitive for DNA quantification. Linear regression showed quantitative agreements between both of the technologies (R2 = 0.59–0.98) in the five groups that were concurrently detected. Principal component analysis from the two datasets consistently indicated a substantial difference in the community composition among the digesters and revealed similar levels of differentiation among the communities. The combined results suggest that dd-PCR is more promising for examining methanogenic archaeal communities in biotechnological processes.
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