Microplastics can affect soil properties and chemical speciation of metals in yellow-brown soil

Wen, Xiaofeng; Yin, Lingshi; Zhou, Zhenyu; Kang, Ziyi; Sun, Qiaoling; Zhang, You; Long, Yuannan; Nie, Xiaobao; Wu, Zhiyuan; Jiang, Changbo

doi:10.1016/j.ecoenv.2022.113958

Cited by 43 publications

(9 citation statements)

References 113 publications

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“…Indirect impacts of MNPs on plants may also occur through alterations in soil physicochemical characteristics, such as pH, water holding capacity, , and soil structure, − as well as soil-dwelling microbes. , Boots et al indicated that the presence of HDPE MPs reduced the root growth of Lolium perenne , potentially attributed to the changes in soil pH and the size distribution of water-stable soil aggregates . Due to the formation of hydrophilic O-containing functional groups and DOC leaching, the photoaged MNPs potentially increase water and organic matter content, pH, and cation exchange ability in soils. , These effects can indirectly impact plant growth such as seed germination and root growth. ,, Furthermore, these changes in soil characteristics may impact soil fertility by influencing the growth of microbial communities in the rhizospherea crucial interface where plants interact with soil microorganisms. − Recent findings suggested that polyester MPs enhanced microbial activity in both bulk soil and the rhizosphere . Additionally, the treatment with polyester promoted soil microbe colonization on spring onion roots, and the potential mycorrhizal symbiosis may facilitate the growth of plants subjected to polyester .…”

Section: Biological Effects Of Photo-aged Mnpsmentioning

confidence: 99%

“… 186 Due to the formation of hydrophilic O-containing functional groups and DOC leaching, the photoaged MNPs potentially increase water and organic matter content, pH, and cation exchange ability in soils. 223 , 224 These effects can indirectly impact plant growth such as seed germination and root growth. 188 , 225 , 226 Furthermore, these changes in soil characteristics may impact soil fertility by influencing the growth of microbial communities in the rhizosphere—a crucial interface where plants interact with soil microorganisms.…”

Section: Biological Effects Of Photo-aged Mnpsmentioning

confidence: 99%

See 1 more Smart Citation

Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Xu,

Ou,

van der Hoek

et al. 2024

Environ. Sci. Technol.

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Micro-and nanoplastics (MNPs) are attracting increasing attention due to their persistence and potential ecological risks. This review critically summarizes the effects of photo-oxidation on the physical, chemical, and biological behaviors of MNPs in aquatic and terrestrial environments. The core of this paper explores how photo-oxidation-induced surface property changes in MNPs affect their adsorption toward contaminants, the stability and mobility of MNPs in water and porous media, as well as the transport of pollutants such as organic pollutants (OPs) and heavy metals (HMs). It then reviews the photochemical processes of MNPs with coexisting constituents, highlighting critical factors affecting the photo-oxidation of MNPs, and the contribution of MNPs to the phototransformation of other contaminants. The distinct biological effects and mechanism of aged MNPs are pointed out, in terms of the toxicity to aquatic organisms, biofilm formation, planktonic microbial growth, and soil and sediment microbial community and function. Furthermore, the research gaps and perspectives are put forward, regarding the underlying interaction mechanisms of MNPs with coexisting natural constituents and pollutants under photo-oxidation conditions, the combined effects of photo-oxidation and natural constituents on the fate of MNPs, and the microbiological effect of photoaged MNPs, especially the biotransformation of pollutants.

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Section: Biological Effects Of Photo-aged Mnpsmentioning

confidence: 99%

Section: Biological Effects Of Photo-aged Mnpsmentioning

confidence: 99%

Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Xu,

Ou,

van der Hoek

et al. 2024

Environ. Sci. Technol.

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“…Feng et al [110], in their investigation, found that MPs can significantly change soil physicochemical properties and thus can alter heavy metal mobility. In addition, Wen et al [111], in their investigation, found that MPs can affect the chemical speciation of metals in the soil system, inducing chemical reactions in biota. The uptake and the tracing of PE MPs in crop plants using lanthanide chelates as a dual-functional tracer has been examined by Luo et al [112].…”

Section: Interaction Of Polyethylene With Organic and Inorganic Pollu...mentioning

confidence: 99%

Plastics in Agricultural and Urban Soils: Interactions with Plants, Micro-Organisms, Inorganic and Organic Pollutants: An Overview of Polyethylene (PE) Litter

Tziourrou,

Golia

2024

Soil Systems

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Over the last few decades, different types of plastics have been found in different soil types with documented or potential negative effects on the environment, the flora and fauna inhabiting the soils, and subsequently human health. This article is a global review of the consequences of the interactions of plastics with soil, plants, soil microbes, and organic or inorganic pollutants depending on land use. It focuses on the various types of polyethylene, a widely used material with a strong presence in both agricultural and urban soils. Although the chemical formula (C2H4)n remains the same in its various classifications, the chemical behavior of polyethylene in soil varies and directly depends on its density, branching, crystallinity, and relative molecular mass, resulting in many and various differences in the properties but also in the behavior of the two main forms of polyethylene, low and high density. However, beyond the chemical composition of plastics, the climatic conditions that apply in both urban and rural areas determine the degree of corrosion as well as their shape and size, also affecting the chemical reactions that directly or indirectly affect them. In agricultural soils, plants and the microbiome present mainly in the rhizosphere seem to dramatically influence the behavior of plastics, where the interaction of all these parameters leads to changes in the availability of nutrients (phosphorus and potassium), the percentage of organic matter and the nitrogen cycle. In urban soils, the increase in temperature and decrease in humidity are the main parameters that determine the adsorption of heavy metals and organic pollutants on the surface of plastics. Although the presence of plastics is considered inevitable, perhaps a more thorough study of them will lead to a reduction in the risks of pollution in urban and rural environments. This research provides a promising perspective on the potential contribution of MP PEs to the sustainable management of soil systems.

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“…These heavy metals accumulate in the soil, causing harm to the soil and the growth of soil microbial communities and plants ( Abbasi et al., 2020 ; Wang et al., 2020b ; Haider et al., 2022 ). The heavy metals availability and toxicity in plants are affected by MPs through adsorption, aggregation, bioaccumulation, and chelation ( de Souza Machado et al., 2019 ; Kaur et al., 2022 ; Wen et al., 2022 ; Iqbal et al., 2023 ). Past investigations demonstrated that MPs could adsorb heavy metals and flow up the food chain, ultimately threatening human health ( Abbasi et al., 2020 ; Kaur et al., 2022 ; Iqbal et al., 2023 ; Khan et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

“…Past investigations demonstrated that MPs could adsorb heavy metals and flow up the food chain, ultimately threatening human health ( Abbasi et al., 2020 ; Kaur et al., 2022 ; Iqbal et al., 2023 ; Khan et al., 2023 ). The MPs can form complexes with heavy metals by chelating them, which may increase metal solubility and plant uptake ( Wen et al., 2022 ). Moreover, MPs alter the availability of heavy metals by changing soil aggregation, bulk density, and soil redox status.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the impacts of cadmium alone and in co-existence with polypropylene microplastics on wheat growth

et al. 2023

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Heavy metals typically coexist with microplastics (MPs) in terrestrial ecosystems. Yet, little is known about how the co-existence of heavy metals and MPs affect crops. Therefore, this study aimed to evaluate the impact of cadmium (Cd; 40 mg/L) alone and its co-existence with polypropylene (PP)-MPs (50 and 100 µm) on seed germination, root and shoot growth, seedling dry weight (DW), and antioxidant enzyme activities of wheat. The study demonstrated that the germination rate of wheat did not vary significantly across treatment groups. Yet, the inhibitory impact on wheat seed germination was strengthened under the co-existence of Cd and PP-MPs, as the effect of a single treatment on seed germination was non-significant. The germination index and mean germination time of wheat seeds were not affected by single or combined toxicity of Cd and PP-MPs. In contrast, Cd and PP-MPs showed synergistic effects on germination energy. Wheat root and shoot length were impeded by Cd alone and in combination with PP-MPs treatments. The DW of wheat seedlings showed significant change across treatment groups until the third day, but on the seventh day, marginal differences were observed. For example, on third day, the DW of the Cd treatment group increased by 6.9% compared to CK, whereas the DW of the 100 µm PP-MPs+Cd treatment group decreased by 8.4% compared to CK. The co-occurrence of Cd and PP-MPs indicated that 50 μm PP-MPs+Cd had an antagonistic impact on wheat seedling growth, whereas 100 μm PP-MPs+Cd had a synergistic impact due to the larger size of PP-MPs. The antioxidant enzyme system of wheat seeds and seedlings increased under single Cd pollution, while the activities of superoxide dismutase, catalase, and peroxidase were decreased under combined pollution. Our study found that Cd adversely affects wheat germination and growth, while the co-existence of Cd and PP-MPs have antagonistic and synergistic effects depending on the size of the PP-MPs.

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Microplastics can affect soil properties and chemical speciation of metals in yellow-brown soil

Cited by 43 publications

References 113 publications

Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Plastics in Agricultural and Urban Soils: Interactions with Plants, Micro-Organisms, Inorganic and Organic Pollutants: An Overview of Polyethylene (PE) Litter

Analyzing the impacts of cadmium alone and in co-existence with polypropylene microplastics on wheat growth

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