The effects of silicon oxide (SiO2) nanoparticles at concentrations of 50, 100, 200, 400, and 800 mg/L on Triticum aestivum L. seedlings were investigated. We showed that SiO2 nanoparticles, at concentrations higher 200 mg/L, had negative impacts on wheat seedlings. At these concentrations, SiO2 nanoparticles significantly decreased roots and shoots fresh weight, decreased roots and shoots dry weight, decreased amounts of chlorophyll a and b in leaves, decreased amount of carotenoids in leaves, increased proline content in leaves, increased lipid peroxidation in leaves, and increased catalase activity in leaves. Results of this study indicate that at lower concentrations (such as 50 and 100 mg/L), SiO2 nanoparticles not only have negative effects on wheat seedlings, but can have even some positive effects.
Russian Journal of Plant Physiology – Springer Journals
Published: Feb 16, 2016
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