期刊
ADVANCED SCIENCE
卷 9, 期 33, 页码 -出版社
WILEY
DOI: 10.1002/advs.202202336
关键词
accumulation; crop grains; nanoplastics; nutritional quality
资金
- National Key R&D Program of China [2019YFA0905400, 2021YFA1201200]
- National Natural Science Foundation of China [31870025, 32170028, U1967217]
- Fundamental Research Funds for Central Universities [226-2022-00043, 226-2022-00192]
- National Independent Innovation Demonstration Zone Shanghai Zhangjiang Major Projects [ZJZX2020014]
The study reveals that nanoplastics can be translocated from the roots to the grains of crops, leading to adverse effects on crop yield and nutritional quality.
Nanoplastics are emerging pollutants of global concern. Agricultural soil is becoming a primary sink for nanoplastics generated from plastic debris. The uptake and accumulation of nanoplastics by crops contaminate the food chain and pose unexpected risks to human health. However, whether nanoplastics can enter grains and their impact on the grains of crop grown in contaminated soil is still unknown. Here, the translocation of polystyrene nanoplastics (PS-NPs) in crops, including peanut (Arachis hypogaea L.) and rice (Oryza sativa L.) is investigated. It is demonstrated PS-NPs translocation from the root and accumulation in the grains at the maturation stage. The treatment with PS-NPs (250 mg kg(-1)) increases the empty-shell numbers of rice grain by 35.45%, thereby decreasing the seed-setting rate of rice by 3.02%, and also decreases the average seed weight of peanuts by 3.45%. Moreover, PS-NPs exerted adverse effects on nutritional quality, such as decreasing the content of mineral elements, amino acids, and unsaturated fatty acids. To the knowledge, this is the first report of the presence of nanoplastics in the grains of crop plants grown in soil containing nanoplastics, and the results highlight the impact of nanoplastics on the yield and nutritional quality of crop grains.
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