Fig. 5
Total soluble proteins in leaves of 30-d-old S. lycopersicum plants grown from seeds treated with TiO2 particles. (A) average protein concentration at day 30, and (B) changes in protein concentration in leaves during the day. Different letters indicate significant differences between treatments (A) or at each measurement time (B) using the Tukey test (p ≤ 0.05). Means ± SE, n = 5