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首页> 外文期刊>Nanobiotechnology, IET >Influence of ZrO2, SiO2, Al2O3 and TiO2 nanoparticles on maize seed germination under different growth conditions
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Influence of ZrO2, SiO2, Al2O3 and TiO2 nanoparticles on maize seed germination under different growth conditions

机译：ZrO 2 ，SiO 2 ，Al 2 O 3 和TiO 2 的影响不同生长条件下纳米粒对玉米种子萌发的影响

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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 (Al2O3) and titania (TiO2) nanoparticles significantly reduce the germination percentage, whereas silica (SiO2) nanoparticles and microparticles enhance the same. The results of nanoparticles and microparticles of zirconia (ZrO2) are found to be same as those of controls. Root elongation is enhanced by SiO2 nanoparticles and microparticles treatment, whereas inhibition is observed with Al2O3 and TiO2 nanoparticles and microparticles. The X-ray fluorescence spectrometry data of the treated and control seed samples show that seeds uptake SiO2 particles to a greater extent followed by TiO2, Al2O3 and ZrO2. 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.
机译：这项研究的重点是评估在不同生长条件（Petri板，棉花和土壤）下，所选金属氧化物纳米颗粒和微粒的植物毒性与玉米种子发芽和根系伸长的关系。种子发芽和根伸长实验的结果表明，所有生长条件都显示出几乎相似的结果。氧化铝（Al2O3）和二氧化钛（TiO2）纳米颗粒显着降低了发芽率，而二氧化硅（SiO2）纳米颗粒和微粒则提高了发芽率。发现氧化锆的纳米颗粒和微粒（ZrO2）的结果与对照的结果相同。 SiO2纳米颗粒和微粒处理可提高根系伸长率，而Al2O3和TiO2纳米颗粒和微粒则可抑制根系伸长。经处理和对照的种子样品的X射线荧光光谱数据表明，种子吸收SiO 2颗粒的程度更大，其次是TiO 2，Al 2 O 3和ZrO 2。另外，发现纳米颗粒的摄取大于微粒的摄取。因此，与微米级相比，测试的金属氧化物以纳米级穿透种子。这项研究阐明了在不同生长基质中处理的纳米颗粒的植物毒性，并强调了纳米颗粒对环境和农业系统的影响。

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