FIGURE 3.
Log change in the number of gene copies of three specific hydrolytic dehalogenase genes from the levels present at time zero. The figure panels show Pelican Lake enrichment cultures (A–C) and PCB contaminated soil enrichments (D–F). Shown are results using the PCB 2-haloacidDhg (A,D), the Pelican 2-haloacidDhg (B,E), and PCBHaDhg1 (C,F) primer sets. The light gray bars show the data for the Cl-NOM-amended treatments and the dark gray bars show that from the NOM-amended treatments. The error bars represent standard deviations of triplicates. The right y-axis shows the average chloride released at each time point for the Cl-NOM enrichments (square) and NOM enrichments (circle).