Fig. 7
Effects of HgCl2 (aquaporin inhibitor) and DTT (dithiothreitol, anti-inhibitor) on the transpiration rate of MEL treated and untreated maize seedlings under water deficiency stress (PEG). After 3 h of PEG treatment, the seedlings were divided as follows: one group determined the transpiration rate directly, another group was treated with 50 μM HgCl2 for 5 min and then rinsed with distilled water before determining the transpiration rate, and the other was exposed to 50 μM HgCl2 (5 min) and 5 mM DTT (15 min) before measuring the transpiration rate. Values are presented as the means ± SE (n = 8). Different letters indicate statistically significant differences at P < 0.05