Liu Yongqiang, Ben Yue, Che Ruijie, Peng Chunqing, Li Jining, Wang Fenghe
School of Environment, Nanjing Normal University, Nanjing 210023, China; Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China; Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Nanjing, Jiangsu, 210023, China.
Institute of Advanced Agricultural Sciences, Peking University, Weifang, 261325, China.
Sci Total Environ. 2023 Dec 1;902:166045. doi: 10.1016/j.scitotenv.2023.166045. Epub 2023 Aug 6.
Waste plastics enter the environment (water, soil, and atmosphere) and degrade into micro- and nano-plastics (MNPs) through physical, chemical, or biological processes. MNPs are ubiquitous in the environment and inevitably interact with terrestrial plants. Terrestrial plants have become important potential sinks, and subsequently, the sources of MNPs. At present, many studies have reported the effects of MNPs on plant physiology, biochemistry, and their phototoxicity. However, the source, detection method, and the absorption process of MNPs in terrestrial plants have not been systematically studied. In order to better understand the continuous process of MNPs entering terrestrial plants, this review introduces the sources and analysis methods of MNPs in terrestrial plants. The uptake pathways of MNPs in terrestrial plants and their influencing factors were systematically summarized. Meanwhile, the transport pathways and the accumulation of MNPs in different plant organs (roots, stems, leaves, calyxes, and fruits) were explored. Finally, the transfer of MNPs through food chains to humans and their health risks were discussed. The aim of this work is to provide significant theoretical knowledge to understand the uptake, transport, and accumulation of MNPs in terrestrial plants and the potential health risks associated with their transfer to humans through food chain.
废弃塑料进入环境（水、土壤和大气），并通过物理、化学或生物过程降解为微塑料和纳米塑料（MNPs）。MNPs在环境中无处不在，并不可避免地与陆生植物相互作用。陆生植物已成为重要的潜在汇，随后又成为MNPs的来源。目前，许多研究报道了MNPs对植物生理、生化及其光毒性的影响。然而，MNPs在陆生植物中的来源、检测方法和吸收过程尚未得到系统研究。为了更好地理解MNPs进入陆生植物的连续过程，本综述介绍了陆生植物中MNPs的来源和分析方法。系统总结了MNPs在陆生植物中的吸收途径及其影响因素。同时，探讨了MNPs在不同植物器官（根、茎、叶、花萼和果实）中的运输途径和积累情况。最后，讨论了MNPs通过食物链向人类的转移及其健康风险。这项工作的目的是提供重要的理论知识，以了解MNPs在陆生植物中的吸收、运输和积累，以及通过食物链转移给人类带来的潜在健康风险。
