Figure 4

Heat map of enriched TFBSs and their corresponding TFs for each of the eight clusters, when both TFBSs and TFs are present in the diurnal genes. The columns indicate the TFs in each of the eight clusters, where the rows represent the enriched (P < 0.05) TFBSs in the 1 kb upstream region of genes in each of the eight clusters. The color of the cell represents the degree of matching: green cells indicate that there is no matching TF and TFBS, while increasing intensity of red colors indicate one or more matches. We found that clusters 2, 7 and 8 contain few TFs that may regulate genes in other clusters, but clusters 4-6 tend to have TFs that may regulate genes in most of the other clusters.