Structural Effect of Pesticides on Rhizosphere Microbiome

IF 4 2区生物学 Q2 MICROBIOLOGY

Environmental microbiology Pub Date : 2025-09-01 DOI:10.1111/1462-2920.70172

Yitian Yu, Qi Zhang, Zhenyan Zhang, Nuohan Xu, Bingfeng Chen, Binghai Lv, Liwei Sun, Dong Zhu, Haifeng Qian, Tao Lu

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Abstract

Pesticide residues in the field pose significant risks to nontarget organisms, and their structures determine their environmental behaviour. However, the effects of different pesticide structures on rhizosphere microbial function remain unclear. Herein, the effects of nine pesticides with sulfonylurea, carbamate and pyrethroid motifs on the wheat rhizosphere microbiome were investigated, revealing the potential mechanisms of ecological risk accumulation. The inhibitory effects of the sulfonylurea motif on microbial diversity were 6 and 19 times those of the other two pesticides, and the carbamate motif disrupted rhizosphere community stability. In addition, the sulfonylurea and carbamate motifs induced 0.3-fold increases in antibiotic resistance genes compared to the control. The adverse effects of the pyrethroid motif were milder than those of the other two motifs in all assessments. With distinct structural effects, we identified key taxa that responded to these motifs, not only having the degrading potential function to specific pesticides but also contributing to the ecological risk accumulation in the rhizosphere. Our findings provide new evidence that structural motif-specific induction of antibiotic resistance genes contributes to increased ecological risks from pesticide exposure.

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农药对根际微生物群的结构效应

田间农药残留对非目标生物构成重大风险，其结构决定了其环境行为。然而，不同农药结构对根际微生物功能的影响尚不清楚。本文研究了磺脲类、氨基甲酸酯类和拟除虫菊酯类农药对小麦根际微生物群的影响，揭示了生态风险积累的潜在机制。磺酰脲基序对微生物多样性的抑制作用分别是其他两种农药的6倍和19倍，氨基甲酸酯基序破坏根际群落的稳定性。此外，与对照相比，磺脲基序和氨基甲酸酯基序诱导的抗生素抗性基因增加了0.3倍。在所有评估中，拟除虫菊酯基序的不良反应较其他两种基序轻微。在不同的结构效应下，我们发现了对这些基序有响应的关键类群，它们不仅对特定农药具有降解功能，而且对根际生态风险积累有贡献。我们的研究结果提供了新的证据，表明抗生素抗性基因的结构基序特异性诱导增加了农药暴露的生态风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental microbiology 环境科学-微生物学

CiteScore

9.90

自引率

3.90%

发文量

427

审稿时长

2.3 months

期刊介绍： Environmental Microbiology provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens