Effects of Different Concentrations of Selenium on Antioxidant Enzyme Activity of Perilla frutescens

A pot experiment was conducted to study the effects of different concentrations of selenium (Se) on the antioxidant enzyme activity of Perilla frutescens.The results showed that Se treatment had significant effect on activities of SOD, POD, CAT and soluble protein content.With Se concentrations increased, activities of SOD, POD and CAT showed different trends, but when Se concentration was 100 mg/kg, activities of SOD, POD, CAT reached the peak, which increased by 92.80%, 2260.97% and 45.56% compared with control respectively.However, soluble protein content reached the peak when Se concentration was 75 mg/kg, which was increased by 80.28%.Therefore, Se can improve antioxidant enzyme activity and soluble protein content of P. frutescens.In terms of antioxidant enzyme activity, Se concentration of 100 mg/kg was the best.However, in terms of soluble protein content, Se concentration of 75 mg/kg was the best.