Effects of combined microplastics and heavy metals pollution on terrestrial plants and rhizosphere environment: A review

被引：7
作者：
Xu L. [1 ]
Xie W. [1 ]
Dai H. [2 ]
Wei S. [3 ]
Skuza L. [4 ]
Li J. [1 ]
Shi C. [1 ]
Zhang L. [1 ]
机构：
[1] School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao
[2] College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C, State Key Laboratory of Biological Resources and Ecological Environment Jointly Built By Q
[3] Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang
[4] Institute of Biology, Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin
来源：
Chemosphere | 2024年 / 358卷
关键词：
Heavy metals; Micro/nano-plastics; Soil microorganisms; Terrestrial plants; Toxic effect; Uptake and translocation;
D O I：
10.1016/j.chemosphere.2024.142107
中图分类号：
学科分类号：
摘要：
Microplastics (MPs) can enter the soil environment through industry, agricultural production and daily life sources. Their interaction with heavy metals (HMs) poses a significant threat to a variety of terrestrial ecosystems, including agricultural ones, thereby affecting crop quality and threatening human health. This review initially addresses the impact of single and combined contamination with MPs and HMs on soil environment, including changes in soil physicochemical properties, microbial community structure and diversity, fertility, enzyme activity and resistance genes, as well as alterations in heavy metal speciation. The article further explores the effects of this pollution on the growth characteristics of terrestrial plants, such as plant biomass, antioxidant systems, metabolites and photosynthesis. In general, the combined contaminants tend to significantly affect soil environment and terrestrial plant growth, i.e., the impact of combined contaminants on plants weight ranged from −87.5% to 4.55%. Similarities and differences in contamination impact levels stem from the variations in contaminant types, sizes and doses of contaminants and the specific plant growth environments. In addition, MPs can not only infiltrate plants directly, but also significantly affect the accumulation of HMs in terrestrial plants. The heavy metals concentration in plants under the treatment of MPs were 70.26%–36.80%. The co-occurrence of these two pollution types can pose a serious threat to crop productivity and safety. Finally, this study proposes suggestions for future research aiming to address current gaps in knowledge, raises awareness about the impact of combined MPs + HMs pollution on plant growth and eco-environmental security. © 2024 Elsevier Ltd
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