Figure 8.

Flavonol (FV) biosynthetic gene expression network eQTLs versus transcription factor eQTLs. The vertical lines separate the genome into chromosomes I-V (as labeled at the top) with cM progressing left to right along the x axis and the length of each chromosome in cM at the end of each chromosome. Only chromosomes I, II and V were included in the figure since chromosomes III and IV did not contain eQTLs for any of the traits described. A) Network eQTLs controlling the expression of flavonol biosynthetic genes. The solid black line is the mean FV network expression utilizing the log² normalized gene expression. The dashed black line is the mean network expression utilizing the z score gene expression. B) eQTLs controlling the expression of transcription factors known to regulate the flavonol biosynthetic gene expression. TTG1 (AT5G24520), TTG2 (AT2G37260) and PAP1 (AT1G56650) detected eQTLs, while TT2 (AT5G35550), TT16 (AT5G23260) and TT8 (AT4G09820) did not. The arrows show the genomic position of the TTG1, TTG2 and PAP1 genes.