![]() glomeratus might play an important role in heavy metal tolerance. harmala to adapt to oxidative stress caused by heavy metal stress, and antioxidative defense in H. glomeratus had a greater capacity than P. glomeratus were elevated only at the highest heavy metal treatment. MDA and H2O2 contents were significantly enhanced in leaves of heavy metal-treated P. harmala exhibited a different enzyme response pattern, with a significant reduction in CAT activity, and elevated SOD and APX activities,īut significantly elevated APX activity was only at the lowest heavy metal concentration. glomeratus exhibited a typical antioxidative defense mechanism, as evidenced by the elevated activities of all the three enzymes tested. In leaves, the heavy metal accumulation pattern in both the plants was dose-dependent, being Peroxidase (APX)] activities and the contents of malondialdehyde (MDA), and hydrogen peroxide (H2O2) in leaves was examined after 2 months of heavy metal exposure. Growth as well as heavy metal accumulation, antioxidative enzymes [superoxide dismutase (SOD), catalase (CAT) and ascorbate In pot experiments, 1-month-old seedlings were grown under control and three levels of combined heavy metal stress. Peganum harmala and annual Halogeton glomeratus. The present study showed the toxicity caused by heavy metal and its detoxification responses in two desert plants: perennial
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