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Phytotoxic effects and rhizosphere microecological responses of peanut to oxytetracycline and microplastic co-exposure

Ecotoxicology and Environmental Safety 2026
Xiaotong Li, Yudong Chen, Jinlong Wang, Yulin Shu, Guanghui Lv

Summary

When peanuts grow in soil contaminated with both an antibiotic (oxytetracycline) and microplastics, the combination stresses the plants and disrupts the helpful bacteria living around their roots more than either pollutant alone. This matters because farm soils increasingly contain both types of pollution from things like manure and plastic waste, and understanding how they harm crops together — not just separately — is key to protecting our food supply and figuring out what ends up on our plates.

= 0.619, p = 0.004). Network analysis further identified key regulatory nodes (Nocardioides and taxifolin) that bridge the associations between the rhizosphere microenvironment and plant growth traits. This study demonstrates that microbial shifts and metabolic adjustments are essential in mediating plant responses to multi-pollutant stress, providing crucial theoretical and mechanistic insights for global agricultural environmental risk assessment under co-contamination scenarios.

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