Study On The Detoxification Mechanism Of Sulfhydryl Substances In Wheat Under Copper And Cadmium Stress
Keywords
Wheat, Cadmium, Copper, Malondialdehyde, Phytochelatins, Glutathione
Abstract
The wheat seedlings were cultured in a culture medium containing 100 ¦Ìmol/LCu2+ and a culture medium containing 100 ¦Ìmol/LCd2+, and the heavy metal contents, malondialdehyde (MDA), phytochelatin (PC) and glutathione (GSH) in the body were observed. )The change. The test results showed that under copper and cadmium stress, the heavy metal content in wheat gradually increased, especially in the roots, which increased significantly, about 75 times, while in the leaves, the increase was less, 2 to 5 times; both in the roots and leaves Among them, the cadmium content is higher than that of copper; the degree of membrane lipid peroxidation in wheat leaves under copper and cadmium stress is higher than that in roots. Regardless of copper stress or cadmium stress, the GSH content in wheat leaves is higher than that in roots, while PC The content is lower than that of the roots.
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Original research done by Wang Haiou, Zhong Guangrong, Liu Xiaofeng, Gong Aijun, Li Xiaojing
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