Abstract
Antioxidant enzymes play a protective role in plant with oxidative stress. . Fluoride negatively affects plants by increasing the level of ROS species and by negatively regulating the growth of plants. Fluoride stress this is one of the most important abiotic stresses. In this studio; Vigna radiata L was exposed to fluoride stress in a half-diluted Hoagland solution. In this study, a concentration-dependent analysis (0, 2.5 and 5, 7.5, 10, 12.5 and 15 mM NaF) of antioxidant enzyme activity performed against the most significant inhibition of growth levels and content of MDA, the decrease in chlorophyll content, was reported in seedlings treated with NaF compared to controls. Antioxidant expression (CAT, GR) showed the highest activity at 7.5 mM NaF and showed a significant defense against fluoride stress during the harvest. This study would help to understand the role of antioxidants in the survival of plants against fluoride stress
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