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| Effect of titanium dioxide nanoparticles on the uptake of pyrene by soybean（Glycine max L.）roots |
| Received:April 28, 2020 |
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| KeyWord:titanium dioxide nanoparticles;pyrene;soybean;uptake;antioxidation |
| Author Name | Affiliation | E-mail | | MA Xiao-yue | Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China
University of Chinese Academy of Sciences, Beijing 100864, China | | | YUAN Bin-bin | Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China
University of Chinese Academy of Sciences, Beijing 100864, China | | | FANG Guo-dong | Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China | | | GAO Juan | Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China | | | ZHOU Dong-mei | Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China | dmzhou@issas.ac.cn |
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| Abstract: |
| Nanoparticles(NPs) have excellent physicochemical properties, but research on the effect of NPs on the uptake and accumulation of polycyclic aromatic hydrocarbons(PAHs)by plant roots is still limited. In this study, the roots of soybean were exposed to TiO2 NPs and pyrene, which were selected as the representative NPs and PAHs, respectively, or both. The results showed that the content of Ti ions in soybean roots increased by 82.3% in the presence of pyrene, but the addition of TiO2 NPs significantly inhibited the uptake and accumulation of pyrene by soybean roots, and hence, the accumulation of pyrene in soybean roots decreased by 97.1%. Under pyrene stress, the presence of TiO2 NPs did not reduce the lipid peroxidation of soybean roots and had no significant effect on the activity of superoxide dismutase(SOD), but significantly reduced the content of glutathione(GSH)in soybean roots. This study provides a theoretical basis for understanding inhibition of the uptake of PAHs by plants and provides a new idea for safe production of agricultural products. |
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