Effect of methyl jasmonate on proline content and absorption Cu, Fe, Zn and Mg in Lepidium sativum L. subjected to copper toxicity

This study aimed to investigate the effect of different concentrations of methyl jasmonate (0, 5, 10 and 20 μ) in plants under different levels of Cu (0, 50, 100 and 200 μ) were performed. Proline, reducing sugars and absorption of iron, zinc, magnesium and copper were measured in plants. The determination of Mg, Fe, Zn, Cu contents was performed on a model Vista MPX Varian inductively coupled plasma-optical emission spectroscopy (ICP-OES) under optimized measurement condition. Our results showed that with the increase of copper concentration in the nutrient solution of copper accumulation in shoots and roots increased. Use of methyl jasmonate reduces the amount of copper in plants. The presence of large amounts of copper in the nutrient solution, iron content in roots increased while decreased in shoots. Use of methyl jasmonate reduces the amount of iron in the shoots. The magnesium content of copper stress on root crops decreased while the magnesium content was unchanged compared with controls. The rate of decline in plant roots and shoots did not change. Methyl jasmonate treatment of certain concentrations under increasing amounts of copper ions such as magnesium and zinc in the shoot.