Figure 2.

Hierarchical clustering of the 3,925 transcripts across the different ROS-generating conditions. Transcripts with at least a 5-fold difference in expression within one time point across all experiments were subjected to hierarchical average linkage clustering. Each horizontal line displays the expression data for one gene. Red and green indicate up- and down-regulation in transgenic or treated plants compared to wild-type or untreated plants, respectively. Intensity of the colors is proportional to the absolute value of the fold difference. Gray corresponds to missing expression values for transcripts that are not represented on either the Affymetrix ATH1 or Agilent Arabidopsis2 microarrays. The horizontal dendrogram (top) indicates the relationship among the experiments across all transcripts included in the cluster analysis. Three main clusters (I, II, and III) are indicated.