Figure 3.
Variation in (a) malondialdehyde (MDA) content, and (b) lipoxygenase (LOX) activity in leaves of sage exposed to charcoal-filtered air (open circle) or to 120 ppb of ozone (5 h day−1) for 36 consecutive days (closed circle). Data are shown as mean ± standard deviation. For each parameter, p levels for the effects of ozone, time, and their interaction from a two-way ANOVA are shown (***: p ≤ 0.001, **: p ≤ 0.01). According to Tukey’s HSD post hoc test, different letters indicate significant differences among means (p ≤ 0.05). FW: fresh weight.