Figure 6. Histochemical and cytochemical detection of H₂O₂ accumulation induced by SA in mung bean hypocotyl cuttings.

a Mung bean hypocotyl cuttings were incubated in SA for 24 h, and H₂O₂ levels were monitored at the indicated time points. All experiments were repeated at least three times with similar results. Bar=1 cm.

b Mung bean hypocotyl cuttings were incubated in SA for 12 h. Hypocotyls treated with distilled water under the same conditions served as controls. All experiments were repeated at least three times with similar results. Abbreviations: CW, cell wall; IS, intercellular space. Bar=1 µm.