Figure 5

Superoxide equivalents extruded by scutellar epidermis. Reduction of XTT by substances produced from surface of scutellum in presence of one of the following conditions: CuCl₂, NADH, NADPH, NADH + CuCl₂, or NADPH + CuCl₂; a, after 18 h; b, after 24 h; c, after 36 h of imbibition. Results are shown as means ± SD of n = 3. ANOVA and Tukey-Kramer Multiple-Comparison Tests were performed with p < 0.05. Symbols: data groups with different numbers imply significant differences; ↑%, represents percent increase in reduction capacity; ↓%, represents percent decrease in reduction capacity.