Effect of Cadmium on some oxidative stress factors in Brassica oleracea l. cv. saccata in hydroponic culture

Purpose of this study is determine the effect of cadmium on some oxidative stress factors in Brassica oleracea l. cv. saccata in a random pattern & repeated 3 times. in order to control experimental conditions the same as the inhibitory effects of the other factors such as soil nutrition factors the hydroponic growth culture was used. The root and shoot samples picked up in 14th day after treatment with different cadmium concentration (0.5, 5) and used it for determination of biochemical and morphological parameters.The activity of Superoxide dismutase (SOD), Polyphenol Oxidase (PPO), catalase (CAT) and malondialdehyde in aerobiosis bodies and roots and also the content of Anthocyanin and chlorophyll a and b in shoots were measured. The results showed the activity of SOD in some aerobiosis bodies in 5 and 0.5 concentration of cadmium & also CAT enzyme activity in aerobiosis bodies with 5 concentration and in roots with 5 cadmium concentration has increased. The cadmium treatment have showed that PPO increased in 5 cadmium con. and also the decreased in 0.5 cadmium con., significantly, in aerobiosis bodies. The amount of Malondialdehyde as an index of proxidation membrance lipids has been decreased significantly in 0.5 con. in shoots. In caring plants with cadmium, Anthocyanin has decreased, significantly. The amount of a & b chlorophylls decreased in 5 concentration. Thus, the obtained results in this study have showed that cadmium has a positive effect on some antioxidant system parameters of the plant in the oxidative stress conditions & regarding that in the most cadmium have never seen any significant root in the data, we can conclude the cadmium conducts from the root to shoot.