Melatonin alleviates lead-induced oxidative damage in safflower (Carthamus tinctorius L.) seedlings.

Application of signaling molecules has gained immense importance in improving the phytoremediative capacity of plants. This study investigated the possible role of melatonin (MEL) as a signaling molecule in ameliorating lead (Pb)-induced oxidative injury in safflower seedlings. Pot grown 10-day-old safflower seedlings were exposed to 50 μM Pb (NO) alone and in combination with different MEL concentrations (0-300 μM).