Abstract:
AIMS:To develop and evaluate primer sets targeted to the dissimilatory sulfite reductase gene (dsrA) for use in quantitative real-time PCR detection of sulfate-reducing bacteria (SRB) in stored swine manure. METHODS AND RESULTS:Degenerate primer sets were developed to detect SRB in stored swine manure. These were compared with a previously reported primer set, DSR1F+ and DSR-R, for their coverage and ability to detect SRB communities in stored swine manure. Sequenced clones were most similar to Desulfovibrio sp. and Desulfobulbus sp., and these SRB populations differed within different manure ecosystems. Sulfur content of swine diets was shown to affect the population of Desulfobulbus-like Group 1 SRB in manure. CONCLUSIONS:The newly developed assays were able to enumerate and discern different groups of SRB, and suggest a richly diverse and as yet undescribed population of SRB in swine manure. SIGNIFICANCE AND IMPACT OF THE STUDY:The PCR assays described here provide improved and efficient molecular tools for quantitative detection of SRB populations. This is the first study to show population shifts of SRB in swine manure, which are a result of either the effects of swine diets or the maturity of the manure ecosystem.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Spence C,Whitehead TR,Cotta MAdoi
10.1111/j.1365-2672.2008.03900.xsubject
Has Abstractpub_date
2008-12-01 00:00:00pages
2143-52issue
6eissn
1364-5072issn
1365-2672pii
JAM3900journal_volume
105pub_type
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