Glyphosate escalates horizontal transfer of conjugative plasmid harboring antibiotic resistance genes.

Glyphosate escalates horizontal transfer of conjugative plasmid harboring antibiotic resistance genes.
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草甘膦促进含有抗生素抗性基因的接合质粒的水平转移

DOI:
10.1080/21655979.2020.1862995
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发表时间:
2021-12
期刊:
影响因子:
4.9
通讯作者:
Zhai Z
Zhai Z
中科院分区:
生物学2区
文献类型:
--
作者:
Zhang H;Liu J;Wang L;Zhai Z

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摘要由于草甘膦被广泛用于农田和城市地区的杂草控制,因此在水环境中经常被检测到。目前,大多数研究的重点都放在草甘膦对人和动物的毒性上。然而,草甘膦对携带抗生素耐药基因(ARG)的接合质粒水平转移的影响在很大程度上还不清楚。在这里,我们探索了草甘膦促进接合质粒介导的ARG水平转移的能力和可能的机制。结果表明,草甘膦能有效地提高携带精氨酸的接合载体的水平转移率。可能的机制分析表明,活性氧和活性氮的过量产生有效地调节了细菌外膜蛋白和接合转移相关基因的表达水平,从而提高了质粒介导的ARG的水平转移速率。总之,这项研究对草甘膦对ARG的生物学效应有了新的理解。图形摘要
ABSTRACT Glyphosate has been frequently detected in water environments because of the wide use for controlling weed in farm lands and urban areas. Presently, the focus of the majority of studies is placed on the toxicity of glyphosate on humans and animals. However, the effects of glyphosate on horizontal transfer of conjugative plasmid carrying antibiotic resistance gene (ARG) are largely unknown. Here, we explored the ability and potential mechanism of glyphosate for accelerating horizontal transfer of conjugative plasmid-mediated ARG. The results showed that glyphosate can effectively boost horizontal transfer rate of conjugative plasmid carrying ARG. The possible mechanism analysis demonstrated that over-production of reactive oxygen species and reactive nitrogen species effectively regulated expression levels of bacterial outer membrane protein and conjugative transfer-related genes, thereby resulting into elevated horizontal transfer rate of plasmid-mediated ARG. In conclusion, this study casts new understanding into the biological effects of glyphosate on ARG. GRAPHICAL ABSTRACT
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