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. 2018 Oct 17;9:1518. doi: 10.3389/fpls.2018.01518

Figure 8.

Figure 8

Role of the ferulates and γ-acetylated guaiacyl-syringaresinol complexes in the WBT-fiber junctions. (A) General representation of WBT-fiber junctions. (B) Ferulates would act as cross-links between carbohydrates and lignin. The nucleation sites of lignification (shaded in red) would include the corners of the compound middle lamella, between the WBT-fiber junctions. CCML, corner of the compound middle lamella; FA, ferulates; Fb, fibers; G, guaiacyl units (γ-acetylated); PW, primary cell wall; S, syringyl units; SW, secondary cell wall. A portion of the carbohydrate matrix is depicted in gray.