Effects of microplastics on soil physical, chemical and biological properties

Natural Hazards Research, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 1, 2024

Pollution from microplastics (MPs) is recognized as a significant new global change factor that may have an impact on ecosystem services and functions. Although it known soil ecosystems, especially agricultural land, are source of MPs, little about the effects MPs such those above below ground. Microplastics assemble in environment, which also acts secondary other environmental media. To evaluate MP contamination arable residential land areas (due to primary MPs), development reproduction fauna, we performed analysis this study. This study sought determine whether exists how influences physical, chemical, biological properties soil. examine causes, impacts, mitigation, perspective pollution soil, several research databases its identification, occurrences, consequences were combed for pertinent data citations. The academic literature was located using search engines Google Scholar, Springer Link, Elsevier, Frontiers. Through study, possible these qualities, landfill leachate, route affect toxicity consequential well living organisms. work addresses laws, rules, numerous state-of-the-art treatment strategies reducing MPs. Significant gaps knowledge require further thorough research.

Language: Английский

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Arbuscular Mycorrhizal Fungus Alleviates Charged Nanoplastic Stress in Host Plants via Enhanced Defense-Related Gene Expressions and Hyphal Capture

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(14), P. 6258 - 6273

Published: March 7, 2024

Contamination of small-sized plastics is recognized as a factor global change. Nanoplastics (NPs) can readily enter organisms and pose significant ecological risks. Arbuscular mycorrhizal (AM) fungi are the most ubiquitous impactful plant symbiotic fungi, regulating essential functions. Here, we first found that an AM fungus, Rhizophagus irregularis, increased lettuce shoot biomass by 25–100% when exposed to positively negatively charged NPs vs control, although it did not increase grown without NPs. The stress alleviation was attributed upregulation gene expressions involving phytohormone signaling, cell wall metabolism, oxidant scavenging. Using root organ-fungus axenic growth system treated with fluorescence-labeled NPs, subsequently revealed hyphae captured further delivered them roots. were observed at hyphal walls, membranes, spore walls. mediated localized epidermis, cortex, stele. Hyphal exudates aggregated thereby reducing their uptake due NP aggregate formation (up 5000 nm). This work demonstrates critical roles fungus in behaviors provides potential strategy for risk mitigation terrestrial ecosystems. Consequent NP-induced impacts affected require attention.

Language: Английский

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The potential contribution of microplastic pollution by organic fertilizers in agricultural soils of Bangladesh: quantification, characterization, and risk appraisals

Frontiers in Environmental Science, Journal Year: 2023, Volume and Issue: 11

Published: June 23, 2023

Although plastics are being recycled worldwide, a significant amount of plastic is still directly exposed to the environment and, in end, forms microplastic (MP) particles (<5 mm). Soil sink for waste. Thus, MP considered an emerging threat terrestrial ecosystems. Among several sources, organic fertilizer can be potential source contaminate agricultural soils. Therefore, it hypothesized that commercial acts as carrier soils Bangladesh. Hence, 18 fertilizers were collected from different local markets Bangladesh and subjected following available separation/extraction techniques. Then, series experimental steps conducted, such microscopic inspection, identification through Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDAX), identify characterize MP. The data analyzed statistically using both qualitative quantitative approaches. On average, 1,529.62 ± 420.2 items/kg detected study, ranging 433.33 152.75 3,466.67 1,357.69 fertilizers. size range 0.5 mm–1.00 mm (30%) was predominant among five ranges. fiber dominant over various shapes, seven colors observed, with black most prevalent. Overall, year, 971.31–1,387.37 items/m 3 area introduced land. These MPs further soil biota groundwater by their distribution pattern. According polymer hazard index (PHI), pollution load (PLI), ecological risk (PERI), this belongs categories III, V, extreme danger, respectively. This study clearly explains presence commercially probable effects. could applicable policy planning reduce contaminants formulating

Language: Английский

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Wind erosion induced low-density microplastics migration at landscape scale in a semi-arid region of northern China

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 871, P. 162068 - 162068

Published: Feb. 6, 2023

Language: Английский

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Recent Advances on Multilevel Effects of Micro(Nano)Plastics and Coexisting Pollutants on Terrestrial Soil-Plants System

Sustainability, Journal Year: 2023, Volume and Issue: 15(5), P. 4504 - 4504

Published: March 2, 2023

Microplastics and nanoplastics (MPs/NPs) are posing emerging potential threats to global ecosystems human health. Recently, the individual effects of MPs/NPs combined MPs/NPs-coexisting pollutants on soil–terrestrial plant systems have attracted increasing attention. Based latest research progress, this review firstly summarized sources interaction between coexisting in soil environment, then systematically induced their multilevel impacts properties terrestrial plants. Soil agroecosystem major long-term sinks primary secondary MPs/NPs, with extensive sources. exhibit universal adsorption capacities can further serve as vectors for varied heavy metal, organic biological contaminants. Generally, combination contaminants may affect physical, chemical microbiological properties, structure functions, while specific degree depend MP/NP characteristics including polymer type, size, shape, concentration degradability. Increasing evidence confirmed uptake translocation plants proved influence growth performance, metabolism physiological toxicity, well cytotoxicity genotoxicity. The vary a function MP/NPs species environmental conditions. joint complex, synergistic, antagonism neutralization been reported at different circumstances. Further comprehensive in-depth studies urgently needed fulfill current knowledge gaps, especially deficiency inherent mechanisms.

Language: Английский

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