Influence of ZrO2, SiO2, Al2O3and TiO2nanoparticles on maize seed germination under different growth conditions
| Autor: | Venkatachalam Rajendran, Rangaraj Suriyaprabha, Gopalu Karunakaran, Narayanasamy Kannan |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Fluorescence spectrometry Metal Nanoparticles Nanoparticle Germination 02 engineering and technology 010501 environmental sciences Zea mays 01 natural sciences law.invention Metal law Materials Testing Toxicity Tests Aluminum Oxide Tissue Distribution Cubic zirconia Electrical and Electronic Engineering Research Articles 0105 earth and related environmental sciences Titanium Petri dish Silicon Dioxide 021001 nanoscience & nanotechnology Culture Media Electronic Optical and Magnetic Materials Chemical engineering Agronomy visual_art Seeds visual_art.visual_art_medium Biological Assay Phytotoxicity Zirconium Elongation 0210 nano-technology Biotechnology |
| Zdroj: | IET Nanobiotechnol |
| ISSN: | 1751-875X 1751-8741 |
| DOI: | 10.1049/iet-nbt.2015.0007 |
| Popis: | The focus of this investigation is to evaluate the phytotoxicity of selected metal oxide nanoparticles and microparticles as a function of maize seed germination and root elongation under different growth conditions (Petri plate, cotton and soil). The results of seed germination and root elongation experiments reveal that all the growth conditions show almost similar results. Alumina (Al(2) O(3)) and titania (TiO(2)) nanoparticles significantly reduce the germination percentage, whereas silica (SiO(2)) nanoparticles and microparticles enhance the same. The results of nanoparticles and microparticles of zirconia (ZrO(2)) are found to be same as those of controls. Root elongation is enhanced by SiO(2) nanoparticles and microparticles treatment, whereas inhibition is observed with Al(2) O(3) and TiO(2) nanoparticles and microparticles. The X‐ray fluorescence spectrometry data of the treated and control seed samples show that seeds uptake SiO(2) particles to a greater extent followed by TiO(2), Al(2) O(3) and ZrO(2). In addition, the uptake of nanoparticles is found to be greater than that of microparticles. Thus, the tested metal oxides penetrated seeds at the nanoscale as compared with the microscale. This study clarifies phytotoxicity of nanoparticles treated in different growth substrates and highlights the impact of nanoparticles on environment and agricultural systems. |
| Databáze: | OpenAIRE |
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