Figure 4

Effects of ABA3 disruption on flavonoid biosynthesis. (a) Flavonoid biosynthetic pathway. Orange and purple letters indicate the early biosynthetic genes (EBGs) and the late biosynthetic genes (LBGs), respectively. Genes encoding transcription factors (TFs) that regulate the flavonoid biosynthetic pathway are also shown on the right. (b) Expression of genes involved in flavonoid biosynthesis under long-term stress. Values are average signal intensities obtained from three independent microarray data experiments. PAL, Phenylalanine ammonia-lyase; C4H, Cinnamate 4-hydroxylase; 4CL, 4-Coumarate:CoA ligase; CHS, Chalcone synthase; CHI, chalcone isomerase; F3H, flavonol 3-hydroxylase; F3′H, flavonol 3′-hydroxylase; FLS, flavonol synthase; DFR, dihydroflavonol-4-reductase; LDOX, leucoanthocyanidin dioxygenase; UF3GT, UDP-glucose flavonoid-3-O glucosyltransferase; GST26, Glutathione S-transferase 26.