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  • Title: Changes in TcpA gene frequency explain 2,4,6-trichlorophenol degradation in mesocosms.
    Author: Sinkkonen A, Ollila S, Romantschuk M.
    Journal: J Environ Sci Health B; 2014; 49(10):756-9. PubMed ID: 25065827.
    Abstract:
    Soils are often polluted by chlorophenols in timber production areas in the northern hemisphere. The tcpA gene encodes the first step of 2,4,6-trichlorophenol (246-TCP) degradation. We tested tcpA gene frequency in three natural pristine soils with different 246-TCP degradation capacity. Gene tcpA frequency increased more in spiked than non-spiked 10-L pails containing coniferous humus soil with high degradation capacity, in contrast to soils where degradation was slower. As the soil in each mesocosm originated from a spatially separate field plot, changes in tcpA gene frequency affected 246-TCP degradation over a range of soil origins. This indicates that the abundance of and changes in tcpA gene frequency could be utilized in estimating the efficacy of natural attenuation and biostimulation treatments in controlled conditions.
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