Differential Impacts of Conventional and Biodegradable Microplastics on Cadmium Transfer in a Soil-Earthworm-Lettuce System
Journal of Agricultural and Food Chemistry2025
1 citation
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Changchao Li,
Changchao Li,
Fengyu Huang,
Changchao Li,
Changchao Li,
Fengyu Huang,
Fengyu Huang,
Fengyu Huang,
Fengyu Huang,
Fengyu Huang,
Fengyu Huang,
Fengyu Huang,
Tao Li,
Li Chen,
Li Chen,
Nan Chang,
Changchao Li,
Tao Li,
Changchao Li,
Tianyi Qiu,
Changchao Li,
Jason C. White
Changchao Li,
Nan Chang,
Nan Chang,
Nan Chang,
Haoran He,
Qingliang Cui,
Nan Chang,
Nan Chang,
Nan Chang,
Tao Li,
Nan Chang,
Tianyi Qiu,
Changchao Li,
Tianyi Qiu,
Li Chen,
Tianyi Qiu,
Jason C. White
Fengyu Huang,
Haijian Bing,
Fengyu Huang,
Tao Li,
Tianyi Qiu,
Changchao Li,
Linchuan Fang,
Changchao Li,
Jason C. White
Jason C. White
Jason C. White
Jason C. White
Jason C. White
Tao Li,
Tao Li,
Qingliang Cui,
Qingliang Cui,
Qingliang Cui,
Fengyu Huang,
Jason C. White
Jason C. White
Jason C. White
Linchuan Fang,
Jason C. White
Fengyu Huang,
Tianyi Qiu,
Tianyi Qiu,
Tianyi Qiu,
Jason C. White
Jason C. White
Jason C. White
Jason C. White
Qingliang Cui,
Changchao Li,
Linchuan Fang,
Qingliang Cui,
Changchao Li,
Jason C. White
Jason C. White
Linchuan Fang,
Fengyu Huang,
Jason C. White
Fengyu Huang,
Jason C. White
Linchuan Fang,
Linchuan Fang,
Changchao Li,
Li Chen,
Jason C. White
Jason C. White
Tianyi Qiu,
Changchao Li,
Haoran He,
Haoran He,
Changchao Li,
Fengyu Huang,
Nan Chang,
Tianyi Qiu,
Changchao Li,
Linchuan Fang,
Fengyu Huang,
Linchuan Fang,
Changchao Li,
Changchao Li,
Linchuan Fang,
Linchuan Fang,
Haijian Bing,
Jason C. White
Jason C. White
Jason C. White
Jason C. White
Jason C. White
Jason C. White
Linchuan Fang,
Changchao Li,
Jason C. White
Linchuan Fang,
Linchuan Fang,
Changchao Li,
Linchuan Fang,
Jason C. White
Linchuan Fang,
Jason C. White
Jason C. White
Linchuan Fang,
Linchuan Fang,
Linchuan Fang,
Linchuan Fang,
Linchuan Fang,
Jason C. White
Jason C. White
Summary
Researchers compared how conventional and biodegradable microplastics affect cadmium transfer through a soil-earthworm-lettuce system. They found that high doses of conventional microplastics increased cadmium concentrations in lettuce shoots by 54 percent and in earthworms by 80 percent, while biodegradable microplastics actually decreased shoot cadmium by 30 percent. The study suggests that different types of microplastics have opposing effects on heavy metal contamination in the food chain.
Microplastics (MPs) and cadmium (Cd) are widespread agricultural contaminants, yet the interactions of MPs with Cd in agroecosystems are unknown. Here, we conducted a microcosm experiment to investigate the impacts of different MP types, including conventional (CMPs) and biodegradable MPs (BMPs), on the transfer of Cd in a soil-earthworm-lettuce system. The high dose (2%) of CMPs significantly increased the Cd concentration in plant shoots and earthworms by 54.1% and 79.9%, respectively. However, high-dose BMP exposure decreased the shoot Cd concentration by 30.3%. This could be explained by significant changes in soil properties, available Cd, and microbial communities after CMP and BMP exposure. Metabolomic analysis revealed that the CMP was significantly more enriched than the BMP group in metabolic pathways related to organic acid biosynthesis, which may increase soil Cd availability. Our study provides important insights for understanding the potential risk of Cd contamination of the food chain under MP exposure.