季节性动态和抗生素耐药性的风险评估在吸管保留的农业生态系统中
Yi Wu1, Yi Fan1, Yiheng Tao2
1Key Laboratory of Dryland Agriculture, Ministry of Agriculture, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; State Key Laboratory of Efficient Utilization of Agricultural Water Resources, CAU/CAAS, China.
Ecotoxicology and environmental safety
|July 9, 2025
概括
吸草保留 (SR) 通过增加抗生素耐药性基因 (ARG),特别是低风险基因,提高了农业的可持续性. 这种做法在季节性结的土壤中有效地管理生态风险.
科学领域:
- 农业科学 农业科学
- 环境微生物学 环境微生物学
- 土壤科学 土壤科学
背景情况:
- 保持草 (SR) 对可持续农业至关重要,但其对抗生素耐药性动态和季节性结环境中的生态风险的影响尚不清楚.
- 了解抗生素耐药性基因 (ARG) 的季节性变异对于评估农业管理实践至关重要.
- 季节性结的农业生态系统对土壤微生物群落和相关风险构成独特的挑战.
研究的目的:
- 在季节性结的农业生态系统中,在草保留下研究抗生素耐药性的季节性动态.
- 为了评估与抗生素耐药性基因 (ARG) 变化相关的生态风险,由于吸管保留.
- 确定影响农业土壤抗生素耐药性的关键环境驱动因素.
主要方法:
- 在中国东北部的三江平原进行多地实地研究.
- 时间序列土壤采样与元基因组测序相结合.
- 结构方程建模以分析驱动因素和影响.
主要成果:
- 留下草始终提高了ARG的丰富度,并诱导了所有季节丰富度的显著季节变化.
- 在结季节,ARG的丰富度达到顶峰,主要由低风险的ARG主导.
- 土壤C/N比率是主要的驱动因素;高风险的ARG仍然是一个次要的组成部分,它们的相互作用减少,稳定了生态风险.
结论:
- 吸草保留丰富了低风险的ARG,并抑制了高风险的ARG相互作用,从而导致可管理的耐药性风险.
- 这种做法可以提高土壤的肥力,同时保持稳定的生态风险概况.
- 这项研究为评估抗生素耐药性风险提供了一个框架,支持在农业中安全采用吸管保留.
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