Effect of increased sulfur concentration on the physiological and morphological responses of the Coriander (Coriandrum sativum) plant to chromium toxicity (Published)
The present study was aimed to investigate the effect of increasing sulfur concentrations in irrigation water in alleviating the adverse effect of chromium toxicity. The cultivated coriander seeds were treated with different concentrations of sulfate (0.4, 0.8 &1.6 mM magnesium sulfate) for 6 weeks until completely growth and ensure for healthy. Each treated group was divided into three subgroups to handle treatment concentration of 0 μM, 50 μM and 100 μM chromium. Stem and root lengths, fresh and dry weights, pigments, protein and chromium concentration were measured. The data showed that increasing chromium concentrations induced a significant decrease in the measured morphological and physiological parameters. Moreover, chromium was accumulated in coriander plant with increasing chromium concentration in irrigation water. Increasing sulfur concentration alleviates the adverse effect of chromium by increasing shoot and root lengths and dry weights. Also, sulfur increased pigment concentration in chromium treated plants to levels as those of control plants. The effect of sulfur was more effective at 50 µM Cr than 100 µM Cr. The two concentration of sulfur were both effective.
Antioxidant System Responses of the Coriander (Coriandrum Sativum) Plant To Chromium Toxicity (Published)
The aim of this study was to compare the effect of different doses of chromium on antioxidant system of the coriander. A total of the coriander seeds were divided among 3 groups. The cultivation of plants was occurred and treated with different concentrations of sulfate (0.4, 0.8 &1.6 mM magnesium sulfate) for 6 weeks until completely growth and ensure for healthy. Each treatment group was divided into three subgroups to handle treatment concentration of 0 µM, 50 µM and 100 µM chromium. Antioxidants (peroxidase, GSH, Ascorbic acid, ASPX, SOD and Catalase( and lipid peroxidation were recorded. All level of Cr treatments lead to numerically decreased in peroxidase, GSH, Ascorbic acid, ASPX, SOD of the coriander than the control. Furthermore, 100 µM of Cr treatments lead to numerically decreased in catalase of the coriander than the control. However, all level of Cr treatments led to numerically increase in lipid peroxidation of the coriander plant than the control. These adverse effects of chromium were encountered with increasing sulfur supply in the irrigation solution. Sulfur decreases the uptake of chromium in coriander plant. Sulfur also alleviates most harmful effect of chromium by enhancement of the antioxidative system (especially GSH content) in the coriander plant. The effect of sulfur was more effective at 50 µM Cr than 100 µM Cr. The two concentration of sulfur were both effective.