气候变化领域集成服务门户(CCPortal): Effective uptake of submicrometre plastics by crop plants via a crack-entry mode

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DOI	10.1038/s41893-020-0567-9
	Effective uptake of submicrometre plastics by crop plants via a crack-entry mode
	Li L.; Luo Y.; Li R.; Zhou Q.; Peijnenburg W.J.G.M.; Yin N.; Yang J.; Tu C.; Zhang Y.
发表日期	2020
ISSN	2398-9629
起始页码	929
结束页码	937
卷号	3 期号:11
英文摘要	Most microplastics are emitted, either directly or via the degradation of plastics, to the terrestrial environment and accumulate in large amounts in soils, representing a potential threat to terrestrial ecosystems. It is very important to evaluate the uptake of microplastics by crop plants because of the ubiquity of microplastics in wastewaters often used for agricultural irrigation worldwide. Here, we analyse the uptake of different microplastics by crop plants (wheat (Triticum aestivum) and lettuce (Lactuca sativa)) from treated wastewater in hydroponic cultures and in sand matrices or a sandy soil. Our results provide evidence in support of submicrometre- and micrometre-sized polystyrene and polymethylmethacrylate particles penetrating the stele of both species using the crack-entry mode at sites of lateral root emergence. This crack-entry pathway and features of the polymeric particles lead to the efficient uptake of submicrometre plastic. The plastic particles were subsequently transported from the roots to the shoots. Higher transpiration rates enhanced the uptake of plastic particles, showing that the transpirational pull was the main driving force of their movement. Our findings shed light on the modes of plastic particle interaction with plants and have implications for crops grown in fields contaminated with wastewater treatment discharges or sewage sludges. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Agricultural robots; Crops; Elastomers; Microplastic; Sewage sludge; Wastewater treatment; Agricultural irrigation; Hydroponic culture; Lateral root emergences; Polymeric particles; Terrestrial ecosystems; Terrestrial environments; Transpiration rates; Treated wastewater; Sewage treatment plants
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163301
作者单位	CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China; Center for Safety of Substances and Products, National Institute of Public Health and the Environment, Bilthoven, Netherlands; Institute of Environmental Sciences (CML), Leiden University, Leiden, Netherlands
推荐引用方式 GB/T 7714	Li L.,Luo Y.,Li R.,et al. Effective uptake of submicrometre plastics by crop plants via a crack-entry mode[J],2020,3(11).
APA	Li L..,Luo Y..,Li R..,Zhou Q..,Peijnenburg W.J.G.M..,...&Zhang Y..(2020).Effective uptake of submicrometre plastics by crop plants via a crack-entry mode.Nature Sustainability,3(11).
MLA	Li L.,et al."Effective uptake of submicrometre plastics by crop plants via a crack-entry mode".Nature Sustainability 3.11(2020).