Growth phenotypes of A. fumigatus alcA::AfcrzA strains grown in the presence of different calcium concentrations. (A) Fold increase in AfcrzA mRNA levels after the growth of the wild type and alcA::AfcrzA strain either in MM+glycerol 2%+ethanol 2% or MM+glycerol 2%+threonine 100 mM for 6 hours at 37°C. The relative quantitation of AfcrzA and tubulin gene expression was determined by a standard curve (i.e., CT-values plotted against logarithm of the DNA copy number). The results are the means ± standard deviation of four sets of experiments. The values represent the number of times the genes are expressed compared to the corresponding wild type control strain (represented absolutely as 1.00). (B) A. fumigatus wild type and alcA::AfcrzA strains were grown for 48 hours at 37°C in MM+ 4% glucose, MM+2% glycerol, MM+2% glycerol+100 mM threonine in the absence of presence of calcium chloride 200 mM and 400 mM. The graph shows the radial growth (cm) of the strains under different growth conditions. The results are the means ± standard deviation of four sets of experiments.