在应用家禽后,丰富土壤微生物群和抗菌素耐药性基因
Getahun E Agga1, Torey Looft2, Karamat R Sistani1
1United States Department of Agriculture, Agricultural Research Service, Food Animal Environmental Systems Research Unit, Bowling Green, KY, USA.
The Science of the total environment
|August 31, 2025
概括
应用家禽垃圾 (PL) 丰富了土壤的微生物和抗菌素耐药性基因,主要是由于营养丰富而不是直接转移. 这会影响土壤健康和农业实践.
科学领域:
- 农业科学
- 环境微生物学
- 土壤科学
背景情况:
- 养 (PL) 是一种常见的土壤补充剂,取代了化学肥料.
- 应用PL可能会增加土壤中的微生物负载和抗菌素耐药性基因.
研究的目的:
- 调查PL应用对土壤微生物和抗体的影响.
- 将PL修改与化学肥料 (CF) 和未经处理的对照 (UC) 处理进行比较.
主要方法:
- 在不同时间点 (d0,d7,d28) 进行UC,CF和PL处理的玉米地块的土壤总DNA测序.
- 来自PL的复合DNA样本的测序进行比较.
- 基因组分析以评估微生物组成,多样性和基因丰度.
主要成果:
- 在土壤中,PL的应用显著增加了Actinomycetota和Pseudomonadota类的丰度.
- 在经过PL修改的土壤中观察到Gammaproteobacteria,Saccharomycetes,特定的微生物物种,功能基因,毒性因子和抗微生物耐药性基因 (特别是Macrolides-Lincosamides-Streptogramin - MLS) 的丰富.
- PL微生物组与修改后的土壤微生物组不同,表明营养丰富是主要的机制.
结论:
- 用于家禽的垃圾显著改变了土壤微生物群落,并增强了土壤的抗性.
- 这些变化可能是营养丰富,而不是直接从垃圾中转移微生物.
- 了解这些转变对于可持续的农业实践和控制抗菌素耐药性至关重要.
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