Effect of Zinc Oxide Nanoparticles on Biomass and Photosynthetic Pigments in Avena sativa.

The nanotechnology applications in agricultural systems are multiple since they offer the potential to significantly improve plant development as well as reduce economic and environmental costs. Zinc oxide nanoparticles (NpsZnO) and other metals have been shown to have positive effects in this field. In this work, NpsZnO were synthesized and their impact on the Avena sativa plant was evaluated. The synthesis of nanoparticles (NPs) was carried out using the sol-gel method and the application of these was carried out in the seeds prior to their sowing. The results indicate that mesoporous NPs were obtained. The results indicated that the plants exposed to the application of NpsZnO had a significantly higher biomass production compared to the control treatment plants, showing values ​​of up to 0.45 (g) compared to the control that contained an average of 0.2 g an increase in the chlorophyll index was observed, obtaining concentrations up to 4 times the control. The growth-promoting effect of the applied NPs could be due to the activity of zinc as a precursor in the synthesis of auxins that promote cell division and elongation.

Zinc Oxide Nanoparticles: An Environmentally Friendly Alternative to Improve Early Germination of Zea mays.

The application of nanoparticles (NPs) in the field of agriculture represents a novel, efficient and low-cost alternative to replace supplies of conventional agriculture. Zinc oxide nanoparticles (NpsZnO) have been shown to have a positive effect on the development of various vegetable species. For this study, NpsZnO were synthesized by the sol-gel method, and subsequently, its absorption in Zea mays seeds and its effect on germination were evaluated. The results showed mesoporous nanoparticles were obtained. In addition, the seeds exposed to the nanoparticles showed a significantly higher concentration of zinc compared to the seeds control, showing values of up to 275 ppm compared to the control which contained an average of 75 ppm. An increase in germination was also observed, obtaining the best effect in the concentration of 16 µg/mL. The growth-promoting effect of the applied NPs on seed germination could be due to the activity of zinc as a precursor in the synthesis of phytoregulators. However, there is a lack of studies in research such as this one to confirm this inference.

Effect of Multi-walled Carbon Nanotubes and Manganese and Zinc Doped Ferrites on the Development of Capsicum annuum.

Nanotechnology applied to agriculture (nanoagriculture) represents a watershed in the study and development of novel alternatives that could strongly influence agricultural practices. In this research, we documented the comparative study with multi-walled carbon nanotube (MWCNT) and ferrites doped with zinc-manganese in C. annuum development, due to the nanoparticles study in plant crops has been showing beneficial effects.

Synthetic Multi-walled Carbon Nanotubes Affect Arabidopsis thaliana Growth through Blocking the TOR Signaling Pathway.

The phytotoxicity of synthetic multi-walled carbon nanotubes (MWCNTs) on plant growth has been documented. However, the physiological mechanisms associated with it are not clear. The activity of TOR signaling pathway and phytoregulators balance play key roles in plant growth regulation and their stress response.