Finding the conditions for the beneficial use of ZnO nanoparticles towards plants-A review
2018
Reddy Pullagurala, Venkata L. | Adisa, Ishaq O. | Rawat, Swati | Kim, Bojeong | Barrios, Ana C. | Medina-Velo, Illya A. | Hernandez-Viezcas, Jose A. | Peralta-Videa, Jose R. | Gardea-Torresdey, Jorge L.
Zinc oxide nanoparticles (ZnO NPs) have a wide range of applications in cosmetics, electrical, and optical industries. The wide range of applications of ZnO NPs, especially in personal care products, suggest they can reach major environmental matrices causing unforeseen effects. Recent literature has shown conflicting findings regarding the beneficial or detrimental effects of ZnO NPs towards terrestrial biota. In this review we carried out a comprehensive survey about beneficial, as well as detrimental aspects, of the ZnO NPs exposure toward various terrestrial plants. A careful scrutiny of the literature indicates that at low concentrations (about 50 mg/kg), ZnO NPs have beneficial effects on plants. Conversely, at concentrations above 500 mg/kg they may have detrimental effects, unless there is a deficiency of Zn in the growing medium. This review also remarks the critical role of the biotic and abiotic factors that may elevate or ameliorate the impact of ZnO NPs in terrestrial plants.
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