Figure 4.

Clustering of DNA methylation differences in plants subjected to abiotic stress. Hierarchical clustering (Wards method) was performed for the DMRs identified in stressed plants (A), control plants (B), or both stress and control plants (C). The heatmap uses red to indicate DNA methylation levels higher than the control average and blue to indicate lower DNA methylation levels. The samples are indicated at the bottom of each plot and the symbols indicate the treatment (green-control, blue-cold, red-heat, yellow-UV).