在地热泉中抗生素和金属耐药性基因之间的关联
Zhipeng Yin1, Hua Ping1, Cheng Li1
1Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Beijing), Ministry of Agriculture and Rural Affairs, Beijing 100097, China.
Environmental research
|March 10, 2026
概括
抗生素耐药性基因 (ARG) 和金属耐药性基因 (MRG) 在原始的地热泉中存在并相互联系. 这些发现揭示了地质上富含金属的环境中的共同选择动态,影响了微生物群落.
科学领域:
- 环境微生物学环境微生物学
- 基因组学和元基因组学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 在受污染的环境中,重金属共同选择抗生素耐药性基因 (ARG).
- 在像地热泉这样的原始,地质丰富的金属系统中,ARG和金属抗性基因 (MRG) 的发生和共同选择尚不清楚.
- 地热泉提供了对早期地球条件和微生物适应性的见解.
研究的目的:
- 为了研究ARG和MRG在中国最大的地热场的分布模式.
- 确定这些自然,富含金属的环境中ARG和MRG之间的关联.
- 识别微生物驱动因素并了解耐药基因的转录活动.
主要方法:
- 使用了元基因组和元转录组分析.
- 包括曼特尔测试和Procustes分析在内的统计分析被用来评估基因关联.
- 重构了元基因组组装基因组 (MAG),以确定关键的微生物种类.
主要成果:
- 在所有地热泉中都检测到了ARG,其中对宏酸-林可萨胺-链谱素 (MLS),细素和利法素的耐药性最为丰富.
- 在特定的ARG (例如,细素,利法素) 和抗性基因之间发现了显著的正相关性.
- 基因组组装基因组识别了潜在的关键驱动因素,如Thiomonas和Tepidimonas,以及metatranscriptomics证实了抗性基因和移动遗传元素的活跃转录.
结论:
- 纯净的地热泉含有各种ARG,这些ARG与MRG有很大关系.
- 地质性金属丰富驱动了抗生素和金属耐药性的共同选择和共同发生.
- 这项研究提供了对独特的,富含金属的生态系统中ARG分布和共同选择动态的系统理解.
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