Melatonin-induced DNA demethylation of metal transporters and antioxidant genes alleviates lead stress in radish plants

摘要

a Changes in Pb contents (mg g−1 DW), DW: dry weight. b Weight of roots and leaves under different concentrations of MT treatment, FW: fresh weight. c, d Melatonin-induced changes in the activity of ascorbate peroxidase (APX) and glutathione reductase (GR). e Growth conditions of radish under Pb-free (Control), Pb stress (Pb200), and 50 μM MT treatment under Pb stress (Pb_50MT). Columns with different letters indicate significant differences at P < 0.05 according to Duncan’s multiple range test