Fig. 3
Effect of NaCl on ROS production and antioxidant enzyme activities in the alkaligrass calli. a H2O2 content and O2•- generation rate; b Activities of superoxide dismutase (SOD) and catalase (CAT); c Activities of ascorbate peroxidase (APX) and peroxidase (POD); d Glutathione peroxidase (GPX) activity; e Activities of monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR); f Activities of glutathione reductase (GR) and glutathione S-transferase (GST); g Contents of ascorbate (AsA) and dehydroascorbate (DHA); h Contents of reduced glutathione (GSH) content and oxidized glutathione (GSSG) content. The values were determined under 0, 50, 150 mM NaCl for 28 days, and were presented as means ± SD (n = 3). Different small letters indicate significant difference (p < 0.05) among different treatments