长期放牧不会增加内蒙古沙漠草原土壤中的抗生素耐药性基因
Zhiwei Gao1, Huimin Zhou2, Chaowei Han3
1College of Grassland Science, Inner Mongolia Agricultural University, Hohhot, PR China; College of Life Sciences, Tianjin Normal University, Tianjin, PR China; Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada.
Journal of environmental management
|July 12, 2025
概括
在内蒙古牧场放牧的牲畜.
科学领域:
- 环境科学环境科学
- 微生物学 微生物学
- 生态生态学 生态生态学
背景情况:
- 抗生素耐药性是全球主要的健康问题.
- 抗生素耐药性基因 (ARG) 可以通过动物废物污染土壤.
- 放牧强度对土壤ARG的影响尚不清楚.
研究的目的:
- 研究不同牲畜放牧强度对土壤ARG的影响.
- 了解放牧,土壤特性和ARG之间的关系.
- 评估沙漠草原生态系统中ARG扩散的风险.
主要方法:
- 长期放牧实验,使用不同的强度水平.
- 基因组测序用于分析土壤ARG.
- 对土壤物理化学性质和细菌多样性的分析.
主要成果:
- 放牧强度对土壤ARG丰度的整体影响最小.
- 轻度放牧降低了氨基糖化物ARG;重度放牧增加了万科米辛ARG.
- 牧场通过改变土壤水分,C/N比率和细菌多样性来间接影响ARG.
结论:
- 长期放牧不会显著增加内蒙古沙漠草原的土壤ARG.
- 轻度放牧可能会降低抗生素耐药性基因传播的风险.
- 了解这些动态对于管理环境抗生素耐药性至关重要.
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