Figure 8
Association of core promoter motifs with absolute mRNA levels. Shown for each promoter class are box plots representing mRNA levels for P. infestans genes, which are based on the maximum normalized signal observed in microarray analysis of the five life-stages described in Figure 6. Outer whiskers represent datapoints within 1.5× interquartile distances of the 25% and 75% quartiles. The top panel shows all genes, the middle panel shows genes with high variation over the same five life-stages (variance >1.75 in per-gene normalized data), and the lower panel shows genes that vary little between life-stages (variance <0.2).