Chromate-fluorescence response of pCHRGFP1 <i>E. coli</i> (A) and pCHRGFP2 <i>O. tritici</i> (B) reporters measured after different exposure periods.

<p>0 h chromate incubation (⧫), 1 h chromate incubation (▪), 2 h chromate incubation (○), 3 h chromate incubation (x), 4 h chromate incubation (•), 5 h chromate incubation (□). The data are the mean values of three experiments with the standard deviations.</p>