| 论文编号: | |
| 论文题目: | Size effects of polystyrene microplastics on the accumulation and toxicity of (semi-)metals in earthworms |
| 英文论文题目: | Size effects of polystyrene microplastics on the accumulation and toxicity of (semi-)metals in earthworms |
| 第一作者: | Xu, Guanghui |
| 英文第一作者: | Xu, Guanghui |
| 联系作者: | Yu, Yong |
| 英文联系作者: | Yu, Yong |
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| 发表年度: | 2021 |
| 卷: | 291 |
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| 英文摘要: | Microplastics (MPs) are plastic fragments less than 5 mm, which may have adverse impacts on organisms. In this study, we investigated the impacts and mechanisms of polystyrene MPs (10 mu m and 100 mu m) and nanoplastics (NPs, 100 nm) with different concentrations (10 mg/kg and 100 mg/kg) in soil on the uptake of metal Cd and semi-metal As in earthworms, Eisenia fetida. MPs facilitated the accumulation of (semi-)metals via damaging the integrity of earthworm intestine, and earthworms accumulated more (semi-)metals in MP treatment groups than NP treatment groups, especially in group of 100 mg/kg of 10 mu m MP with concentrations of 1.13 mg/kg and 32.7 mg/kg of Cd and As, respectively. Higher genotoxicity to earthworms was observed for MPs than NPs. Antioxidant enzymes activity and their mRNA gene relative expression levels indicated that MPs with high concentration induced severer damage to earthworms, thus resulting in the increased accumulation of (semi-)metals by earthworms. In addition, proteomic and metabolomic analysis revealed that MPs (100 ppm of 10 mu m) disturbed the earthworm immune and metabolic systems, resulting in the highest accumulation of (semi-)metals in earthworms. This study clarifies the influence mechanisms of MPs with different sizes and levels on the accumulation of (semi-)metals by terrestrial invertebrates. |
| 刊物名称: | Environmental Pollution |
| 英文刊物名称: | Environmental Pollution |
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| 英文参与作者: | G. H. Xu, Y. Yang and Y. Yu |
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Size effects of polystyrene microplastics on the accumulation and toxicity of (semi-)metals in earth
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