Fig. 4

Peroxidase (POD) and catalase (CAT) activity levels in corn plantlets versus TMA-IONP concentrations. Data are presented on two separate vertical axes: POD activity is shown on the left axis and CAT activity is represented on the right axis. Data are presented as mean ± standard deviation. * Statistically significant differences (p < 0.05); ** statistically insignificant differences (p > 0.05) in relation to the control.