Figure 5From: Pectic homogalacturonan masks abundant sets of xyloglucan epitopes in plant cell wallsIndirect immunofluorescence detection of xyloglucan and pectic HG epitopes in TS pea stem internode. a. Bright field image showing anatomy. b. Calcofluor White image of section shown in a showing all cell walls. c. LM15 binding to an equivalent section. The antibody binds most strongly to distal region of protoxylem (arrowheads). d. An equivalent section to c that had been pre-treated with pectate lyase to remove pectic HG. LM15 binds strongly to epidermal and parenchyma cell walls. e. Section immunolabelled with pectic HG probe JIM5. f. Equivalent section to e pre-treated with pectate lyase indicates that the JIM5 epitope had been abolished. Arrows indicate inner edge of pith parenchyma. Dotted shaft arrows indicate junction between non-sclerifed parenchyma cell walls with sclerified parenchyma/fibre cell walls. cp = cortical parenchyma, pp = pith parenchyma, ep = epidermis, vb = vascular bundle, pf = phloem fibre bundle. Scale = 100 μm.Back to article page