Antioxidative Defense System in Pisum sativum Roots Exposed to Heavy Metals (Pb, Cu, Cd, Zn)
نویسندگان
چکیده
Heavy metals (Cd, Pb, Cu, Zn) absorbed by roots brought about oxidative stress conditions through ROS production (O2̄ ̇, H2O2) for pea plants cultivated hydroponically for 96 h on a Hoagland medium with the addition of 50 μM: CdCl2, Pb(NO3)2, CuSO4, and ZnSO4. We shows, using laser ablation ICP MS, that Cd, Cu, Pb, and Zn elements are located along a cross-section through the roots of pea plants. We observed increasing activities of antioxidative enzymes (SOD, CAT, GR) in oxidative stress conditions. We have shown changes in redox state (GSH/GSSG) in pea root grown with Pb, Cu, Cd, and Zn.
منابع مشابه
Antioxidative defense to lead stress in subcellular compartments of pea root cells.
Lead, similar to other heavy metals and abiotic factors, causes many unfavorable changes at the subcellular and molecular levels in plant cells. An increased level of superoxide anion in Pisum sativum root cells treated with 1 mM Pb(NO3)2 evidenced oxidative stress conditions. We found increased activities of enzymatic components of the antioxidative system (catalase and superoxide dismutase) i...
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