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抗生素耐药性水平与土壤物理化学性质之间的联系

Mateusz Szadziul¹, Agata Goryluk-Salmonowicz², Magdalena Popowska¹

¹University of Warsaw, Faculty of Biology, Institute of Microbiology, Department of Bacterial Physiology, Warsaw, Poland.

Frontiers in microbiology

|May 22, 2025

概括

抗生素耐药性基因 (ARG) 在农业土壤中比森林更为丰富,与土壤特性和移动遗传元素有关. 环境因素影响抗菌素耐药性 (AMR) 的传播,需要将土壤生态整合到"一个健康"战略中.

科学领域:

环境科学环境科学
微生物学微生物学
土壤科学土壤科学

背景情况:

抗菌素耐药性 (AMR) 是全球卫生危机,研究往往忽视了土壤等环境水库.
抗生素耐药细菌 (ARB) 和抗生素耐药基因 (ARG) 在自然环境中的传播尚不清楚.
了解土壤的作用对于全面的AMR缓解策略至关重要.

研究的目的:

调查土壤物理化学特性与ARG丰度之间的关系.
为了比较农业与森林土壤中的ARG和移动遗传元素 (MGE) 水平.
确定驱动AMR在土壤生态系统中的传播的环境因素.

主要方法:

从农田和森林收集了土壤样本.
分析了24个物理化学参数.
高通量qPCR量化了27个ARG和5个MGE.

主要成果:

与森林土壤相比,耕地表现出明显不同的特性 (含水量,湿土,沙子,泥,).
农业土壤具有更高的ARG和MGE丰富度,其中一些ARG仅适用于这些环境.
在MGEs和ARGs之间,以及在土壤,,和AMR之间发现了积极的相关性.
金沙含量和C:N比率与ARG/MGE丰度呈现反向相关性.

结论:

土壤的物理化学特性显著影响ARG和MGE的丰度.
移动遗传元素在ARG的传播中发挥着关键作用.
重金属污染可能对ARG进行共同选择,导致AMR传播.
将土壤生态整合到"一个健康"框架中,对抗药物耐药性控制至关重要.

关键词:

抗微生物耐药性抗微生物耐药性共同选择共同选择金属是金属,金属是金属.移动的遗传元素是移动的.物理化学特性物理化学特性土壤土壤土壤土壤土壤

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