Fig. 4
Mining of key candidate genes in the biosynthesis of phenolic acids and lignans. A Volcano plot of phenolic acids and lignans metabolites. B Heatmap of relative content of phenolic acids and lignans compounds. C Changes in syringaresinol-4'-O-glucopyranosid content after gene overexpression in N. benthaniana leaves. D Changes in 1-O-Sinapoyl-D-glucose content after gene overexpression in N. benthaniana leaves. E Phenolic acids and lignans biosynthesis pathway and expression of key genes in the P. cyrtonema. Green genes show that compound accumulation is inhibited, whereas red genes promote compound accumulation