Fig. 6.

Changing patterns of gene expression (white boxes) associated with chlorogenic acids and with monolignols biosynthetic pathway in the developing coffee (Coffea arabica) seed. Caffeoyl quinic and feruloyl quinic acids (gray boxes) are intermediate metabolites leading to G and S monolignols. Dashed lines indicate multistep pathways or uncharacterized enzymes. C3H, p-coumarate 3-hydroxylase; C4H, trans-cinnamate 4-hydroxylase; CAD, cinnamyl alcohol dehydrogenase; CCoAOMT, caffeoyl-CoA 3-O-methyltransferase; CHS, chalcone synthase; CHI, chalcone isomerase; 4CL, 4-coumarate:CoA ligase; CCR, cinnamoyl-CoA reductase; COMT, caffeic acid O-methyltransferase; CQAs, caffeoyl quinic acids; F5H, ferulate 5-hydroxylase; FQAs, feruloyl quinic acids; HCT, hydroxycinnamoyl-CoA:shikimate/quinate hydroxycinnamoyl transferase; HQT, hydroxycinnamoyl-CoA quinate hydroxycinnamoyl transferase; PAL, phenylalanine ammonia lyase; POD, secretory peroxidase. *, p-coumaroyl quinate or p-coumaroyl shikimate.