Figure 1.

A simplified diagram of the phenylpropanoid pathway for lignin biosynthesis. Cinnamyl alcohol dehydrogenase (CAD) converts the cinnamyl aldehydes (p-coumaraldehyde, coniferaldehyde and sinapaldehyde) to alcohols, the monomeric precursors of H, G, and S lignin. Caffeic acid O- methyltransferase (COMT) catalyzes the methylation of alcohol/aldehyde precursors to S and G lignin. amiR-cad1 impairs CAD activity; amiR-comt4 impairs COMT activity.

Trabucco et al. BMC Biotechnology 2013 13:61   doi:10.1186/1472-6750-13-61
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