Cytogenetic And Oxidative Damage Of Aluminum, Lead And Cadmium In The Simulated Acid Rain To Plants

With the aggravation of environment pollution, acid rain has become an international environmental problem. Acid rain can accelerate the soil acidification and strengthen the activity of heavy metals in the soil. The heavy metals absorbed by plants not only inhibit plant growth but also enter into food chain by edible portion in plants to damage the health of human being. Consequently, it is more important to study the toxic effects of acid rain and metals in the environment.The effects of aluminum, lead and cadmium on the activities of superoxide dismutase(SOD), peroxidase(POD) and catalase(CAT) were investigated in Triticum aestivum and Vicia faba under the condition of acid rain. Results showed that the combination of acid rain, aluminum, lead and cadmium decreased the activities of SOD, POD and CAT significantly at higher concentration, while it affected the activities at low concentrations. This means that the combination of acid rain and metals can lead to oxidation damage to plants.Cytogenetic effects of the combination of acid rain, aluminum, lead and cadmium were investigated in Vicia faba root tip cells. The experimental results showed that the combination caused genetic...