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Diverse Impacts of Microplastic-derived Dissolved Organic Matter at Environmentally Relevant Concentrations on Soil Dissolved Organic Matter Transformation

Environmental Science & Technology 2025 7 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 53 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Yiping Luo, Yiping Luo, Xinran Qiu, Xinran Qiu, Ling Ding Xinran Qiu, Yiping Luo, Yiping Luo, Xinran Qiu, Ling Ding, Ling Ding, Xinran Qiu, Yufan Wang, Xinran Qiu, Yong Shi, Xuetao Guo, Ling Ding, Yong Shi, Ling Ding Bin Zhang, Xuetao Guo, Xuetao Guo, Ling Ding Yong Shi, Yong Shi, Xuetao Guo, Xuetao Guo, Ling Ding Ling Ding, Ling Ding, Xinran Qiu, Xuetao Guo, Xinran Qiu, Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xuetao Guo, Yufan Wang, Xinran Qiu, Yufan Wang, Yufan Wang, Bin Zhang, Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Bin Zhang, Bin Zhang, Xujun Liang, Ling Ding Xuetao Guo, Qian Cui, Qian Cui, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Ling Ding, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Ling Ding Ling Ding Xinran Qiu, Xinran Qiu, Ling Ding Ling Ding Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xinran Qiu, Lijie Zhang, Xuetao Guo, Xuetao Guo, Qian Cui, Qian Cui, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xinran Qiu, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xujun Liang, Ling Ding, Xujun Liang, Xinran Qiu, Yujing Ren, Xujun Liang, Lijie Zhang, Xujun Liang, Xinran Qiu, Xinran Qiu, Xuetao Guo, Xinran Qiu, Lijie Zhang, Xujun Liang, Yujing Ren, Xuetao Guo, Xujun Liang, Xinran Qiu, Xinran Qiu, Xujun Liang, Xujun Liang, Bin Zhang, Xuetao Guo, Xuetao Guo, Ling Ding Xuetao Guo, Xujun Liang, Xuetao Guo, Ling Ding Ling Ding Xinran Qiu, Xuetao Guo, Xinran Qiu, Xuetao Guo, Xuetao Guo, Ling Ding Ling Ding Ling Ding Ling Ding Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xujun Liang, Xujun Liang, Bin Zhang, Bin Zhang, Bin Zhang, Xinran Qiu, Xujun Liang, Ling Ding, Ling Ding, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xinran Qiu, Xinran Qiu, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xujun Liang, Bin Zhang, Xujun Liang, Xuetao Guo, Yufan Wang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Lijie Zhang, Lijie Zhang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xuetao Guo, Xujun Liang, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xujun Liang, Xuetao Guo, Xuetao Guo, Xuetao Guo, Ling Ding

Summary

Researchers examined how dissolved organic matter leached from biodegradable and conventional agricultural mulch microplastics affects soil chemistry at environmentally realistic concentrations. They found that UV-exposed microplastic leachates were more bioavailable and caused greater changes to soil organic matter than those produced in dark conditions. The study suggests that even at low concentrations, microplastic-derived compounds can meaningfully alter soil carbon dynamics, with effects varying by soil type.

Dissolved organic matter (DOM) is critical to soil ecosystems, with its dynamics influenced by exogenous substances like microplastics (MPs)-derived dissolved organic matter (MPs-DOM) from agricultural mulches. However, the impacts of MPs-DOM, especially at environmentally relevant concentrations, on soil DOM dynamics remain unclear. Here, we examined DOM transformation in yellow (YS) and black (BS) soils upon the addition of MPs-DOM, leached from biodegradable and nonbiodegradable mulches under ultraviolet irradiation (UV-MPs-DOM) and dark conditions (D-MPs-DOM), at environmentally relevant concentrations (3 mg C/kg). Results showed that extraction conditions, rather than mulch type, predominantly affected the bioavailability of MPs-DOM. UV-MPs-DOM, enriched in lipid-like and protein/amino sugar-like compounds, promoted soil DOM transformation. In YS, characterized by lower microbial diversity, UV-MPs-DOM enhanced DOM lability more than D-MPs-DOM. Conversely, in BS, with a diverse microbial community, UV-MPs-DOM with high bioavailability not only directly altered soil DOM composition but also was rapidly metabolized by the soil microbiome, particularly Proteobacteria, thereby resulting in increased soil DOM recalcitrance. However, the low bioavailability of D-MPs-DOM primarily exerted direct effects, contributing to its accumulation and increase in soil DOM lability. These findings provide novel evidence that MPs-DOM at environmentally relevant concentrations can alter soil DOM through distinct pathways, highlighting its potential long-term ecological risks.

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