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Microplastic interactions in the agroecosystems: methodological advances and limitations in quantifying microplastics from agricultural soil

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Abstract

The instantaneous growth of the world population is intensifying the pressure on the agricultural sector. On the other hand, the critical climate changes and increasing load of pollutants in the soil are imposing formidable challenges on agroecosystems, affecting productivity and quality of the crops. Microplastics are among the most prevalent pollutants that have already invaded all terrestrial and aquatic zones. The increasing microplastic concentration in soil critically impacts crop plants growth and yield. The current review elaborates on the behaviors of microplastics in soil and their impact on soil quality and plant growth. The study shows that microplastics alter the soil's biophysical properties, including water-holding capacity, bulk density, aeration, texture, and microbial composition. In addition, microplastics interact with multiple pollutants, such as polyaromatic hydrocarbons and heavy metals, making them more bioavailable to crop plants. The study also provides a detailed insight into the current techniques available for the isolation and identification of soil microplastics, providing solutions to some of the critical challenges faced and highlighting the research gaps. In our study, we have taken a holistic, comprehensive approach by analysing and comparing various interconnected aspects to provide a deeper understanding of all research perspectives on microplastics in agroecosystems.

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Acknowledgements

The study was supported by the DST-SERB under the project “Spatio-temporal distribution of microplastics, a vector in the sludge-laden soil environment” (File no. CRG/2021/001133). The authors greatly acknowledge DST-SERB for the financial assistant. ARS also wants to acknowledge MCIN/AEI/UVigo for their JdCi contract under the "Actuación financiada por IJC2020-044197-I/MCIN/AEI/https://doi.org/10.13039/501100011033 y por la Unión Europea NextGeneration EU"/PRTR". This article is based upon work from COST Action CA20101 Plastics monitoring detection Remediation recovery—PRIORITY, supported by COST (European Cooperation in Science and Technology) (www.cost.eu).

Funding

This work was supported by the DST-SERB under the project “Spatio-temporal distribution of microplastics, a vector in the sludge-laden soil environment” (File no. CRG/2021/001133). ARS has received support from MCIN/AEI/UVigo under "Actuación financiada por IJC2020-044197-I/MCIN/AEI/https://doi.org/10.13039/501100011033 y por la Unión Europea NextGeneration EU"/PRTR", based upon work from COST Action CA20101 Plastics monitoring detection Remediation recovery—PRIORITY, supported by COST (European Cooperation in Science and Technology) (www.cost.eu).

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PAA contributed to data curation, investigation, methodology, and writing—original draft; YW involved in investigation and writing—original draft; ARS involved in review and editing; SD involved in validation and visualization; GPDC involved in review and editing; NC contributed to conceptualization, formal analysis, funding acquisition, resources, supervision, and project administration.

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Correspondence to Natarajan Chandrasekaran.

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Athulya, P.A., Waychal, Y., Rodriguez-Seijo, A. et al. Microplastic interactions in the agroecosystems: methodological advances and limitations in quantifying microplastics from agricultural soil. Environ Geochem Health 46, 85 (2024). https://doi.org/10.1007/s10653-023-01800-8

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  • DOI: https://doi.org/10.1007/s10653-023-01800-8

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