The invention relates to nucleic acids encoding a p-coumaroyl-CoA:monolignol transferase and to inhibitory nucleic acids adapted to inhibit the expression and/or translation of a p-coumaroyl-CoA:monolignol transferase RNA. Inhibition of p-coumaroyl-CoA:monolignol transferase in plants improves the incorporation of monolignol ferulates into the lignin of plants, giving rise to plant biomass that is more easily processed into useful products such as paper and biofuels.