Figure 4

Representative images from SEM backscattering detection of DAB stained Bienertia chlorenchyma cells (For quantification of results see Table 2). Image A is the control for H₂O₂ detection (no DAB was included). Image B is the stain for H₂O₂, where DAB was allowed to react with in vivo produced H₂O₂. Image C is the control for peroxidase activity (no H₂O₂ was added). Image D is the stain for peroxidase activity, where H₂O₂ is supplied in excess. CCC = central compartment chloroplast, PCC = peripheral compartment chloroplast. Scale Bar = 50 μm.