Quantification of genes and gene transcripts for microbial perchlorate reduction in fixed‐bed bioreactors
dc.contributor.author | De Long, S.K. | en_US |
dc.contributor.author | Li, X. | en_US |
dc.contributor.author | Bae, S. | en_US |
dc.contributor.author | Brown, J.C. | en_US |
dc.contributor.author | Raskin, L. | en_US |
dc.contributor.author | Kinney, K.A. | en_US |
dc.contributor.author | Kirisits, M.J. | en_US |
dc.date.accessioned | 2012-03-16T15:59:32Z | |
dc.date.available | 2013-05-01T17:24:41Z | en_US |
dc.date.issued | 2012-03 | en_US |
dc.identifier.citation | De Long, S.K.; Li, X.; Bae, S.; Brown, J.C.; Raskin, L.; Kinney, K.A.; Kirisits, M.J. (2012). "Quantification of genes and gene transcripts for microbial perchlorate reduction in fixed‐bed bioreactors." Journal of Applied Microbiology 112(3). <http://hdl.handle.net/2027.42/90307> | en_US |
dc.identifier.issn | 1364-5072 | en_US |
dc.identifier.issn | 1365-2672 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/90307 | |
dc.description.abstract | Aims: Optimization of full‐scale, biological perchlorate treatment processes for drinking water would benefit from knowledge of the location and quantity of perchlorate‐reducing bacteria (PRB) and expression of perchlorate‐related genes in bioreactors. The aim of this study was to quantify perchlorate removal and perchlorate‐related genes ( pcrA and cld ) and their transcripts in bioreactors and to determine whether these genes or transcripts could serve as useful biomarkers for perchlorate treatment processes. Methods and Results: Quantitative PCR (qPCR) assays targeting pcrA and cld were applied to two pilot‐scale, fixed‐bed bioreactors treating perchlorate‐contaminated groundwater. pcrA and cld genes per microgram of DNA were two‐ to threefold higher and three‐ to fourfold higher, respectively, in the bioreactor showing superior perchlorate‐removal performance. In a laboratory‐scale bioreactor, quantities of pcrA and cld genes and transcripts were compared under two distinct performance conditions ( c. 60 and 20% perchlorate removal) for a 5‐min empty bed contact time. cld genes per microgram of DNA were approximately threefold higher and cld transcripts per microgram of RNA were approximately sixfold higher under the higher perchlorate‐removal condition. No differences in pcrA genes or transcripts per microgram of DNA or RNA, respectively, were detected between the c. 60 and 20% perchlorate‐removal conditions, possibly because these assays did not accurately quantify pcrA genes and transcripts in the mixed culture present. Conclusions: Quantities of cld genes and transcripts per microgram of DNA and RNA, respectively, were found to be higher when perchlorate removal was higher. However, quantities of pcrA and cld genes or transcripts were not found to directly correlate with perchlorate‐removal rates. Significance and Impact of the Study: To our knowledge, this study represents the first application of qPCR assays to quantify perchlorate‐related genes and transcripts in continuous‐flow bioreactors. The results indicate that cld gene and transcript quantities can provide insights regarding the quantity, location and gene expression of PRB in bioreactors. | en_US |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.publisher | Wiley Periodicals, Inc. | en_US |
dc.subject.other | Biological Drinking Water Treatment | en_US |
dc.subject.other | Perchlorate‐Reducing Bacteria | en_US |
dc.subject.other | Quantitative PCR | en_US |
dc.subject.other | Reverse‐Transcription QPCR | en_US |
dc.subject.other | Perchlorate | en_US |
dc.title | Quantification of genes and gene transcripts for microbial perchlorate reduction in fixed‐bed bioreactors | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Microbiology and Immunology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationother | Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, Austin, TX, USA | en_US |
dc.contributor.affiliationother | Carollo Engineers, Sarasota, FL, USA | en_US |
dc.identifier.pmid | 22188394 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90307/1/JAM_5225_sm_FigS1.pdf | |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90307/2/JAM_5225_sm_FigS2.pdf | |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90307/3/j.1365-2672.2011.05225.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2672.2011.05225.x | en_US |
dc.identifier.source | Journal of Applied Microbiology | en_US |
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dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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