Fig. 6

The proposed pathways and genes involved in the biosynthesis of PhGs and lignins in C. tubulosa. The grey box represents the organic acid acyl moiety of PhGs derived from PS pathway; The orange box represents the phenylethanol moiety or phenylethanol glycosides that derived from TM/PM pathways; The pink box represents metabolites in tyrosine/phenylalanine metabolism pathways; The green box represents lignins derived from the PS pathway