Fig. 6

The side-chain and aromatic region in 2D-HSQC NMR spectra of WT, TG21, 5sr-1 and 5sr-5. S, syringyl; G, guaiacyl; H, p-hydroxyphenyl; FA, ferulate; PCE, p-coumaric acid ethyl ester; A, β-O-4 aryl ethers; C, phenylcoumarans; I, p-hydroxycinnamyl alcohol end-groups