Sample literature review

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In recent years, the study of microplastics in agricultural systems has gained considerable traction, particularly concerning their impact on soil microbial communities and overall soil health. Microplastics (MPs) originate from various sources, including the degradation of agricultural plastics used in mulching and other farming practices. Given the increasing prevalence of MPs, understanding their ecological ramifications is paramount for maintaining soil health and agricultural productivity.

One pivotal research conducted by Šmídová et al. highlighted the significant effects of both conventional and biodegradable agricultural microplastics on soil properties, microbial diversity, and functions across different European pedoclimatic conditions [1]. The study revealed that the introduction of MPs at realistic concentrations resulted in consistent reductions in microbial activity linked to essential soil functions, such as nitrogen cycling, with pronounced effects observed in higher MP concentrations.

Similarly, Aslam et al.'s work delved into the overarching implications of microplastics on soil microbial communities and nutrient cycling [2]. This study connects with the emerging concern that microplastics, by altering the soil's biotic and abiotic environments, may significantly impair soil ecosystem functions, including those derived from plant interactions within the soil.

Moreover, a significant experiment by Kim et al. investigated the effects of biodegradable microplastics on microbial dynamics through a controlled mesocosm experiment, illustrating that varied concentrations can produce distinct alterations in microbial alpha and beta diversity [5]. The findings from this study underscore the importance of understanding how the introduction of biodegradable MPs influences not only microbial communities but also the broader metrics of soil health, including respiration rates and microbial richness.

Furthermore, the interplay between microplastics and crop health is demonstrated through Colzi et al., who explored the toxic effects on Cucurbita pepo L. The research evidenced reduction in growth parameters, photosynthetic efficiency, and alterations in the plants' elemental profiles when exposed to various types of microplastics—especially those that retained persistent toxicity traits [3]. These findings resonate with broader discussions on crop yield impacts influenced by soil health, which are crucial for sustainable agricultural practices.

In evaluating the dimensions of microplastics on soil ecosystems, the research conducted by Lai et al. focused on the physicochemical alterations and microbial diversity within rice rhizosphere soils, revealing that both conventional and biodegradable microplastics could significantly reduce nutrient availability and enzyme activities critical for soil microbial communities [6]. Their results contribute valuable insights into the ecological risks associated with biodegradable plastic applications in agriculture.

From a nutrient cycling perspective, the work of Liu et al. reveals the compounding effects that microplastics can have in conjunction with herbicides—demonstrating how the co-exposure with substances like acetochlor not only exacerbates soil health degradation, but specifically reconstructs microbial communities and their functioning [8]. This insight is critical, as it emphasizes the vital interconnections between chemical and plastic pollution in agricultural settings, potentially informing future management practices.

Collectively, the state of the art in examining microplastics reveals a complex web of interactions affecting soil microbial communities and health across agricultural systems. The evidence indicates that MPs, whether deriving from biodegradable or conventional sources, pose significant threats to soil biota, with cascading effects on nutrient cycling, crop growth, and soil ecosystem sustainability [4][6][7]. Further research into mitigating these effects, with emphasis on tailored management strategies, remains a pressing requisite to foster resilient agricultural practices in the face of growing plastic pollution.

References: [1] Šmídová et al. (2025). "Conventional and biodegradable agricultural microplastics: effects on soil properties and microbial functions across a European pedoclimatic gradient." Environmental Pollution. [2] Aslam et al. (2026). "Microplastics in agricultural soils: Impacts on soil microbial communities, nutrient cycling, earthworm health, and soil ecosystem functions." Environmental Chemistry and Ecotoxicology. [3] Colzi et al. (2022). "Impact of microplastics on growth, photosynthesis and essential elements in Cucurbita pepo L." Journal of hazardous materials. [4] Lai et al. (2025). "Effects of different microplastics on the physicochemical properties and microbial diversity of rice rhizosphere soil." Frontiers in Microbiology. [5] Kim et al. (2025). "Effects of biodegradable microplastics on soil microbial communities and activities: Insight from an ecological mesocosm experiment." The Science of the Total Environment. [6] Liu et al. (2025). "Agricultural films derived microplastics intensify acetochlor toxicity on soil health." Journal of Hazardous Materials. [7] Wu et al. (2024). "Combined effects of mulch film-derived microplastics and pesticides on soil microbial communities and element cycling." Journal of Hazardous Materials. [8] Liu et al. (2024). "Impact of microplastics on growth, photosynthesis and essential elements in Cucurbita pepo L." Journal of Hazardous Materials Advances.

References

1. Klára Šmídová et al. (2025). Conventional and biodegradable agricultural microplastics: effects on soil properties and microbial functions across a European pedoclimatic gradient.. Environmental pollution
2. I. Aslam et al. (2026). Microplastics in agricultural soils: Impacts on soil microbial communities, nutrient cycling, earthworm health, and soil ecosystem functions. Environmental Chemistry and Ecotoxicology
3. I. Colzi et al. (2022). Impact of microplastics on growth, photosynthesis and essential elements in Cucurbita pepo L.. Journal of hazardous materials
4. Zhangling Chen et al. (2025). Microplastics in Soil–Plant Systems: Current Knowledge, Research Gaps, and Future Directions for Agricultural Sustainability. Agronomy
5. Shin Woong Kim et al. (2025). Effects of biodegradable microplastics on soil microbial communities and activities: Insight from an ecological mesocosm experiment.. The Science of the total environment
6. Sheng Lai et al. (2025). Effects of different microplastics on the physicochemical properties and microbial diversity of rice rhizosphere soil. Frontiers in Microbiology
7. S. Karthika et al. (2024). Distribution pattern and risk assessment of microplastics contamination in different agricultural systems. International Journal of Environmental Analytical Chemistry
8. Zhaojiang Liu et al. (2025). Agricultural films derived microplastics intensify acetochlor toxicity on soil health.. Journal of hazardous materials
9. Changcai Wu et al. (2024). Combined effects of mulch film-derived microplastics and pesticides on soil microbial communities and element cycling.. Journal of hazardous materials
10. Md Mehedee Hasan et al. (2024). Adverse Impacts of Microplastics on Soil Physicochemical Properties and Crop Health in Agricultural Systems. Journal of Hazardous Materials Advances
11. M. Irshad et al. (2024). Unveiling the detrimental effects of polylactic acid microplastics on rice seedlings and soil health.. Chemosphere
12. Yan-Pei Li et al. (2023). Earthworm activity effectively mitigated the negative impact of microplastics on maize growth.. Journal of hazardous materials
13. Yuan Zhang et al. (2025). The combined effect of microplastics and tetracycline on soil microbial communities and ARGs.. Environmental pollution
14. R. Qi et al. (2024). Regulatory path for soil microbial communities depends on the type and dose of microplastics.. Journal of hazardous materials
15. Quan-Yun Ye et al. (2024). Microplastics abundance associated with farmland use types and the impact on soil microbial communities: A case study in Southern China.. Journal of hazardous materials