Figure 7.
Schematic overview of benzenoid (C6–C1) biosynthetic pathways in plants. Displayed are the peroxisomal β-oxidative pathway investigated and two proposed nonoxidative cytosolic pathways in the biosynthesis of benzenoid compounds from the common precursor cinnamic acid. Already known enzymatic steps from plants are displayed with solid arrows, unknown enzymatic steps with dashed arrows. Enzymes investigated in this study are highlighted in red, already characterized enzymes from other plants are displayed in black. BALDH, benzaldehyde dehydrogenase; BEBT, benzoyl-CoA:benzyl alcohol O-benzoyltransferase; BSMT, benzoic acid/salicylic acid methyltransferase; 4CL, 4-coumarate CoA-ligase; CoA, Coenzyme A; 3H3PP, 3-hydroxy-3-phenylpropionic acid; 3H3PP-CoA, 3-hydroxy-3-phenylpropanoyl-CoA; 3O3PP, 3-oxo-3-phenylpropanoyl-CoA; PAL, phenylalanine ammonia lyase; TE, thioesterase.