Role of glutathione reductase and catalase enzyme in antioxidant defense mechanism in controlling fluoride-induced oxidative stress

Abstract

Fluoride stress is one among the majority of significant abiotic stresses. Fluoride affects plants in negative manner through increasing the level of ROS species and reducing the plant growth. 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, 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 malondialdehyde, the reduce in chlorophyll contented be report in seedlings treat by NaF compared to controls. Antioxidant biochemical expression (catalase, glutathione reductase) 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 appreciate the responsibility of antioxidants within the survival of plants against fluoride stress.