G6PD activity in untreated and rehydrated R. lacera placed in the growth chamber. Lichen samples were soaked in deionized water for 5 min, wiped to remove excess water, and placed inside a growth chamber (25°C, 97% RH, 73 μmol of photons m−2 s−1). The results are expressed as means ± the SD (n = 4). The values of treatments denoted by different letters differ significantly by one-way ANOVA and Tukey HSD test (P < 0.001, F ratio = 12.648).