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- W2045348519 endingPage "6526" @default.
- W2045348519 startingPage "6515" @default.
- W2045348519 abstract "Polychlorinated biphenyls (PCBs) pose potential risks to human and environmental health because they are carcinogenic, persistent, and bioaccumulative. In this study, we investigated bacterial communities in soil microcosms spiked with PCB 52, 77, and 153. Switchgrass (Panicum virgatum) was employed to improve overall PCB removal, and redox cycling (i.e., sequential periods of flooding followed by periods of no flooding) was performed in an effort to promote PCB dechlorination. Lesser chlorinated PCB transformation products were detected in all microcosms, indicating the occurrence of PCB dechlorination. Terminal restriction fragment length polymorphism (T-RFLP) and clone library analysis showed that PCB spiking, switchgrass planting, and redox cycling affected the microbial community structure. Putative organohalide-respiring Chloroflexi populations, which were not found in unflooded microcosms, were enriched after 2 weeks of flooding in the redox-cycled microcosms. Sequences classified as Geobacter sp. were detected in all microcosms and were most abundant in the switchgrass-planted microcosm spiked with PCB congeners. The presence of possible organohalide-respiring bacteria in these soil microcosms suggests that they play a role in PCB dechlorination therein." @default.
- W2045348519 created "2016-06-24" @default.
- W2045348519 creator A5013885155 @default.
- W2045348519 creator A5026577952 @default.
- W2045348519 creator A5027907619 @default.
- W2045348519 creator A5042582323 @default.
- W2045348519 creator A5084022458 @default.
- W2045348519 date "2015-03-31" @default.
- W2045348519 modified "2023-10-18" @default.
- W2045348519 title "Microbial community analysis of switchgrass planted and unplanted soil microcosms displaying PCB dechlorination" @default.
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