Additional file 3 of Exogenous proline mitigates toxic effects of cadmium via the decrease of cadmium accumulation and reestablishment of redox homeostasis in Brassica juncea

Additional file 3: Fig. S3. Effects of exogenous proline on GR activity in leaves (A) and roots (B) of Brassica juncea seedlings under Cd stress. All the analyses were performed with three replicates. Error bars represent the standard deviations (SD). The different letters in the group indicate significantly different values between treatments (P < 0.05). GR, glutathione reductase.