南极地区的环境抗体与人类和动物废物排放密切相关
Dong Wu1,2, Marc W Van Goethem3, David W Graham4,5
1Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China.
Environmental science & technology
|September 30, 2025
概括
抗生素耐药性基因 (ARG) 在南极垃圾场附近高出10倍. 人类和动物的废物推动了ARG的传播,威胁着原始的极地环境.
科学领域:
- 环境微生物学环境微生物学
- 基因组学就是基因组学.
- 极地科学 极地科学
背景情况:
- 南极洲在各种环境中拥有多样化的抗生素耐药性基因 (ARG).
- 了解极地地区的ARG分布,特别是受影响和原始地点之间的联系,至关重要.
- 菌体,等离子体和微生物组合在ARG空间模式中的作用需要研究.
研究的目的:
- 在南极环境中调查抗生素耐药性基因 (ARG) 的分布和来源.
- 为了确定废物影响的场所对ARG丰度和组成的影响.
- 探索塑体,菌体和微生物群落在ARG传播中的作用.
主要方法:
- 来自不同环境的85个南极样本的元基因组测序.
- 在废弃物影响和原始地点之间对ARG丰度和抗体组合的比较分析.
- 评估与ARG和微生物种群的等离子体和菌体关联.
主要成果:
- 与原始南极地区相比,在受废物影响的地区,ARG的丰度是原始南极地区的10倍.
- 除了冰川之外,抗体组合在各个地点通常都很相似.
- 等离子体与ARG比菌体更强烈地相关;关键的细菌种群如*Pseudomonas*和*Staphylococcus*主导了ARG的流行.
- 受废物影响的地点显示微生物迁移率较高,作为ARG携带细菌的主要来源.
结论:
- 人类和动物的废物在南极的生态系统中显著增加了ARG水平.
- 微生物群落和等离子体,而不是菌体,是ARG分布的关键驱动因素.
- 人类定居点的有效废物管理对于保护原始的南极环境免受全球抗体扩张的威胁至关重要.
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