Protective role of iron ions in Brassica juncea L. plants for the action of lead acetate

Abstract

Protective role of iron ions in different concentrations on Brassica juncea L. plants under the exposure of lead acetate was studied. Inhibitory effect of lead ions on plants morphometric parameters was shown, iron ions in high concentrations slightly stimulated plant growth. It was found that increasing of lead concentration due to the reduction of chlorophyll content in leaves was caused by iron deficiency. Marked antagonistic interactions between lead and iron ions was shown, and that the toxic effects of lead were significantly reduced with a simultaneous increasing of iron concentration in medium. Under metal ions action MDA and hydrogen peroxide content in roots and shoots was increased compared to control plants, joint effect of iron ions partially decreased that effect. Catalase activity was increased in all experimental variants, compared to control plants.

Keywords

• brassica juncea l. plants
• lead
• iron
• antioxidant system