66-fold increases in their expression 1 h after GA3 treatment,
while 3-7-fold decreases were noted in their expression
24 h after treatment. Differentially expressed genes
encoding enzymes involved in the phenylpropanoid biosynthetic
pathway, as well as the related chlorogenic acid biosynthetic
pathway (Additional file 2: Figure S12), included
phenylalanine ammonia-lyases, cinnamate 4-hydroxylase,
4-coumarate CoA ligases, hydroxycinnamoyl-CoA shikimate/quinate
hydroxycinnamoyltransferase, caffeoyl-CoA
O-methyltransferases and cinnamoyl-CoA reductases.
Interestingly, the majority of DEGs encoding PALs, which
are the enzymes that catalyze the first step in this