Figure 4.

Expression of (a) the putative CRP-family regulatory gene encoded by MED4 locus PMM0806, (b) Yfr20, (c) nrdJ, and (d) the PTOX locus PMM0336 in the gas shock experiment. Data points are the geometric means of two biological replicates. Fold change is relative to t=0 for each condition. The region between each time course and the baseline used for significance testing (for the air control, expression at t=0; for experimental conditions, the parallel time course in air) is shaded according to the outcome of that test: a significant change in expression in air with respect to t=0, blue; a significantly different time course in an experimental condition than in air, red; no significant effect, gray.