Figure 3.
Spectrophotometric activity (a) and electrophoretic profile after Native-PAGE (b) of ascorbate peroxidase (APX) in the cytosolic fraction 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 = 1 nmol of ascorbate oxidized min−1; prot. = proteins. 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.