Figure 6.
Spectrophotometric analysis (a), electrophoretic pattern of Native-PAGE (b), and related densitometric analysis (c) in the cytosolic fraction of superoxide dismutase (SOD) of artichoke control plants (Ctrl), mycorrhizal plants (M), plants inoculated with Verticillium dahliae (I), and in mycorrhizal plants inoculated with V. dahliae (MI); 1 U= the amount of enzyme required to inhibit the reduction rate of NBT by 50% at 25 °C; prot. = proteins; a.u. = arbitrary units. The results are given as the mean values of at least five experiments ± SD; * * and ▼▼ indicate values significantly different from the control (Ctrl) and from the artichoke inoculated with V. dahliae, respectively, by the Student’s t test with p < 0.01.