Positive Interaction of Selenium Nanoparticles and Olive Solid Waste on Vanadium-Stressed Soybean Plant

The purpose of the current study was to determine possible improvement in soybean plants’ tolerance against vanadium-induced stress response application olive solid waste (OSW) and selenium nanoparticles (Se-NPs), by assessing metabolites plant defense systems. Drawing upon this aim, a pot experiment performed where plants were grown with fertilization treatment (including, control, OSW, Se-NPs, Se-NPs + OSW) under vanadium (including non-stress 350 mg sodium orthovanadate per kg soil). Enhancement hydrogen peroxide (H2O2) malondialdehyde (MDA) accumulation vanadium-stressed confirmed oxidative damage unfertilized plants. Results indicated positive effects combined (Se-NPs improving causing balance produced ROS detoxified plant. It mainly stimulated through photosynthetic parameters, anthocyanin metabolism pathway, phenylpropanoid non-enzymatic antioxidant (tocopherols, malondialdehyde, polyphenols, flavonoids), enzymes, biochemical components involved ASC/GSH cycle (ascorbate, ascorbate peroxidase, dehydroascorbate reductase, monodehydroascorbate glutathione, glutathione peroxidase), direct scavenging enzymes (peroxidase, catalase, superoxide dismutase), which finally resulted higher biomass. In conclusion, simultaneous OSW treatments provided reliable protection for vanadium-contaminated soils activation non-antioxidant mechanisms.