Figure 1

Regulatory networks in lignocellulose synthesis in angiosperms, shown using Arabidopsis gene nomenclature, involve feed-forward loop circuits. Dashed arrows highlight direct target gene activation by higher hierarchy regulators. White boxes at the bottom indicate target gene programs. For simplicity, some regulators, including ASL19, MYB103 and KNAT7, are omitted. Adapted from [1] and references therein.