Comparative analysis of expression profiles of common differentially expressed genes from ADC2, SAMDC1, and SPMS overexpressing plants. Only hormone-related genes are shown. Left: MAPMAN analysis (Thimm et al., 2004; Usadel et al., 2005). The signal from transgenic plants is expressed as a ratio relative to the signal in wild-type Col-0 plants converted to a log2 scale, and displayed. Right: Heatmap expression analysis using abiotic stress series from BAR (Toufighi et al., 2005). Rows represent genes and columns represent experimental conditions. The colour at a point represents the log2 of the ratio of the average of replicate treatments relative to the average of corresponding controls. The scale is shown in the figures. Orange boxes: ADC2 overexpressing plants. Blue boxes: SAMDC1 overexpressing plants; yellow boxes: SPMS overexpressing plants.