Alleviation of cadmium toxicity to Cole (Brassica campestris L. Cruciferae) by exogenous glutathione

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Wang, Jun^1 ; Huang, Bin^2 ; Chen, Xin^2 ; Shi, Yi^2

College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun

113001, China^1

State Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang

110164, China^2

关键词: Above ground biomass;    Anti-oxidant activities;    Anti-oxidative enzymes;    Beneficial effects;    Cadmium toxicity;    Cd accumulation;    Plant development;    Radical oxygen species;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012080/pdf
DOI  :  10.1088/1755-1315/61/1/012080

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this study, we determined the influence of exogenous GSH on cadmium toxicity to cole. GSH addition had beneficial effect on plant development and growth, especially on aboveground biomass and root length. Despite that exogenous GSH insignificantly promoted Cd uptake by the plant, it could decrease of Cd root-to-shoot transport and ameliorate Cd toxicity to the plant. At 6 mg Cd kg-1 soil, GSH addition well countered the Cd-induced significant reduction in CAT activity, but only insignificantly decreased MDA content, suggesting exogenous GSH might indirectly protect plant against oxidative stress via regulating antioxidative enzyme activities. However, at 12 mg Cd kg-1 soil, GSH application insignificantly increased the antioxidant activities but significantly decreased MDA content, indicating external GSH could directly participate in removing radical oxygen species. The results suggest exogenous GSH may have the potential of decreasing Cd accumulation in the edible parts of cultivars and alleviating Cd toxicity.