Figure 2.

Hierarchical clustering of data from the microarray analysis of gene expression in smoke- and KAR₁-treated germinating maize kernels. The data represents control vs. smoke, control vs. KAR₁, control vs. smoke-treated for 3 h after a 3 h delay, control vs. smoke-treated for 6 h after a 3 h delay, and KAR₁ vs. smoke comparisons. Samples with similar patterns of expression of the genes studied cluster together, as indicated by the dendrogram. The hierarchical clustering of the 21 genes that seemed to be the most relevant in all experiments is illustrated (expression changed in all experiments with fold-change ≥ 2, and at least in one experiments the corrected p-values < 0.1). Yellow indicates up-, and blue indicates downregulation.