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在城市农业系统中,与绿叶蔬菜和土壤相关的细菌的多药性耐药性

Erin Harrelson¹, Qingyue Zeng¹, Mairui Gao¹

¹Department of Nutrition and Food Science, University of Maryland, College Park, MD, United States.

Frontiers in plant science

|October 8, 2025

概括

城市农场可以容纳多种耐药细菌,对食品安全构成风险. 这项研究分析了城市农场细菌,发现常见的土壤微生物携带耐药性基因和移动元素,突出了潜在的传播风险.

科学领域:

环境微生物学环境微生物学
食品安全食品安全
抗微生物耐药性抗微生物耐药性

背景情况:

城市农场和社区花园对于当地食品至关重要,但也可以成为新出现的污染物的储,例如抗菌素耐药性 (AMR).
之前的研究发现了来自华盛顿特区叶蔬菜生产环境的100多种多药耐药 (MDR) 细菌分离物.

研究的目的:

在87种来自城市叶绿植物,根区土壤和散土的MDR细菌分离物上进行全基因组测序.
综合描述MDR基因型,包括分类学,抗菌素耐药性基因 (ARG),应激反应基因和移动遗传元素 (MGE).

主要方法:

87个MDR细菌分离物的全基因组测序 (WGS).
生物信息分析用于识别细菌分类,抗微生物耐药性基因 (ARG),应激反应基因和移动遗传元素 (MGE).
对ARG地点相对于MGE进行分析,以评估动员的潜力.

主要成果:

MDR分离物属于4个属和14个属,主要包括*Pseudomonas*,*Serratia*,*Providencia*和*Bacillus*.
主要的ARG赋予了对多药物排放,β-乳糖胺和四环素的耐药性.
所有MDR分离物都含有MGEs,在这些元素附近发现了19个ARG,这表明可能存在横向基因转移.

结论:

城市农业中的MDR细菌,包括农产品上的MDR细菌,主要是常见的土壤相关的种类.
这些细菌具有多样化的ARG和MGE,表明在城市食品系统内AMR传播的潜在途径.
基因组表征为城市农业生态系统中MDR的遗传基础提供了洞察力.

关键词:

伪omonas 是一个类型的.抗微生物耐药性抗微生物耐药性环境的抵抗力比较强塑料体中的塑料.城市农业城市农业整个基因组的测序.

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