Figure 1.

Overview of experiments and scatter plot graphs of expression distribution patterns of 2375 ESTs after microarray hybridizations with labeled cDNA probes obtained from mRNA of untreated and treated Arabidopsis plants (average of two replicates for each treatment). Treatments with corresponding untreated controls included inoculation with A. brassicicola and applications of the defense-related signaling molecules SA, MJ, and ethylene (Eth). A negative control hybridization was carried out with two untreated control samples. Diagonal red lines represent 2-fold and 3-fold induction/repression ratio cutoffs relative to the best fit line through the normalized data (middle green line).