Effects of polystyrene microplastics on uptake and toxicity of phenanthrene in soybean

删除或更新信息，请邮件至freekaoyan#163.com(#换成@)

本站小编 Free考研考试/2021-12-12

论文编号:
论文题目:	Effects of polystyrene microplastics on uptake and toxicity of phenanthrene in soybean
英文论文题目:	Effects of polystyrene microplastics on uptake and toxicity of phenanthrene in soybean
第一作者:	徐光辉
英文第一作者:	xvguanghui
联系作者:	于泳
英文联系作者:	xvguanghui
外单位作者单位:
英文外单位作者单位:
发表年度:	2021
卷:	783
期:
页码:	147016-147016
摘要:	Microplastics (MPs) can influence the availability of contaminants in the soil and have adverse effects on plants. Up to now, the effects of MPs on the uptake of organic pollutants by leguminous plants are still unclear. In this study, we explored the impacts and mechanisms of polystyrene MPs of different sizes on the uptake of phenanthrene (Phe) by soybean seedlings. The results showed that MPs decreased the uptake of Phe in soybean roots and leaves. Micron-size MPs showed a higher inhibition of Phe uptake in roots than nano-size MPs (4.83 mg/kg) at the beginning with concentrations of 1.89 mg/kg, 3.40 mg/kg, and 0.72 mg/kg in groups 1 mum, 10 mum, and 100 mum MPs/Phe, respectively. The combined toxicity of micron-size MPs and Phe to soybean plants was higher than that of nano-size MPs and Phe, and 100 mum MPs and Phe co-contaminant show the highest toxicity to soybean. The activities of antioxidative enzymes and their gene expression showed that micron-size MPs induced higher genotoxic and oxidative damage to soybean roots than nano-size MPs, which decreased the activity of roots, thus leading to the lower uptake of Phe by soybean roots and leaves. This study highlights that the combined exposure to MPs and Phe causes harmful effects on soybean plants and MPs inhibit the uptake of organic pollutants by higher plants.
英文摘要:	Microplastics (MPs) can influence the availability of contaminants in the soil and have adverse effects on plants. Up to now, the effects of MPs on the uptake of organic pollutants by leguminous plants are still unclear. In this study, we explored the impacts and mechanisms of polystyrene MPs of different sizes on the uptake of phenanthrene (Phe) by soybean seedlings. The results showed that MPs decreased the uptake of Phe in soybean roots and leaves. Micron-size MPs showed a higher inhibition of Phe uptake in roots than nano-size MPs (4.83 mg/kg) at the beginning with concentrations of 1.89 mg/kg, 3.40 mg/kg, and 0.72 mg/kg in groups 1 mum, 10 mum, and 100 mum MPs/Phe, respectively. The combined toxicity of micron-size MPs and Phe to soybean plants was higher than that of nano-size MPs and Phe, and 100 mum MPs and Phe co-contaminant show the highest toxicity to soybean. The activities of antioxidative enzymes and their gene expression showed that micron-size MPs induced higher genotoxic and oxidative damage to soybean roots than nano-size MPs, which decreased the activity of roots, thus leading to the lower uptake of Phe by soybean roots and leaves. This study highlights that the combined exposure to MPs and Phe causes harmful effects on soybean plants and MPs inhibit the uptake of organic pollutants by higher plants.
刊物名称:	The Science of the total environment
英文刊物名称:	The Science of the total environment
论文全文:
英文论文全文:
全文链接:
其它备注:
英文其它备注:
学科:
英文学科:
影响因子:
第一作者所在部门:
英文第一作者所在部门:
论文出处:
英文论文出处:
论文类别:
英文论文类别:
参与作者:	G. Xu, Y. Liu and Y. Yu
英文参与作者:	G. Xu, Y. Liu and Y. Yu

Effects of polystyrene microplastics on uptake and toxicity of phenanthrene in soybean

本站小编 Free考研考试/2021-12-12

相关话题/

领限时大额优惠券,享本站正版考研考试资料!