A conceptual model linking functional gene expression and reductive dechlorination rates of chlorinated ethenes in clay rich groundwater sediment.
作者： Jacob Bælum , Julie C. Chambon , Charlotte Scheutz , Philip J. Binning , Troels Laier
DOI: 10.1016/J.WATRES.2013.02.016
关键词: Environmental chemistry 、 Dehalogenase 、 Bacterial growth 、 Vinyl chloride 、 Biology 、 Reductive dechlorination 、 Steady state (chemistry) 、 Dehalococcoides 、 Sediment 、 Environmental engineering 、 Microcosm
摘要: We used current knowledge of cellular processes involved in reductive dechlorination to develop a conceptual model describe the regulatory system at cell level; links bacterial growth and substrate consumption abundance messenger RNA functional genes process. The applicability was tested on treatability study biostimulated bioaugmented microcosms. Using quantitative real time PCR, high-resolution expression profiles dehalogenase bvcA vcrA were obtained during two consecutive events trichlorethene, cis-dichlorethene vinyl chloride. Up-regulation (for microcosms) gene fitted well with high rates chloride, while no known transcripts could be measured trichloroethene dechlorination. Maximum concentrations 2.1 1.7 per genes, respectively, same points as maximum observed. developed compared experimental data for both microcosms under non-steady state conditions supported by results from recently published steady conditions.
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