Fig. 10

Expression profiles of sorghum UGTs. All 108 expressed UGTs found in the phylogenetic analysis were normalized to Z-score and clustered using hierarchical clustering with Wards method (a). The hierarchical clustering was divided into 6 groups, which was further subdivided into 14 subgroups (colored lines in each cluster) (Additional file 8). The lighter color represents the first subgroup and the darker color the last subgroup in a cluster. The number of genes in each cluster is listed in parenthesis next the cluster number. The grey field represents the span of all the expression profiles in a single cluster. The dashed curves represent the concentration of pGlcPAAc (largest peak between day 10 and 20) and the three dhurrin glucosides (smaller peaks) pr. mg tissue in the course of grain development in relation to the expression profiles. Genes in cluster 1 plotted in FPKM values of interest to the conversion of the glucosylation of pOHPAAc (b). Genes from cluster 3 plotted in FPKM values representing good candidates for the formation of the three CNdglcs (c). UGTs contained in phylogenetic group G (defined in Fig. 9) (d). The colors in b–d refers to the gene names listed next to panel a