膜生物反应器和氧化沟中抗生素耐药基因和毒力基因的特征及其时间相互作用。
Profiles of antibiotic resistance genes and virulence genes and their temporal interactions in the membrane bioreactor and oxidation ditch.
机构信息
Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, 100084 Beijing, PR China.
Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, 100084 Beijing, PR China.
出版信息
Environ Int. 2019 Oct;131:104980. doi: 10.1016/j.envint.2019.104980. Epub 2019 Jul 8.
Antibiotic resistance genes (ARGs) and virulence genes (VGs) in wastewater treatment plants (WWTPs) may pose a potential threat to public health if without proper treatment. In this study, GeoChip was used to reveal the differences in ARG/VG diversity between a membrane bioreactor (MBR) and an oxidation ditch (OD) and the temporal co-occurrence patterns between ARGs and VGs. Results showed that the diversity of ARGs and VGs was lower in MBR than that in OD in the short term due to the better disinfection capability of MBR. However, the differences in diversity between two reactors disappeared in the long term because of the great variation of temperature. Instead, time-decay relationship was observed and overall turnover rate was -0.0105. Co-occurrence patterns indicate that direct connections between ARGs and VGs reduced sharply with time increasing due to the different responses of ARGs and VGs to environmental variation.
污水处理厂（WWTPs）中的抗生素耐药基因（ARGs）和毒力基因（VGs）如果未经适当处理，可能对公众健康构成潜在威胁。在这项研究中，使用 GeoChip 揭示了膜生物反应器（MBR）和氧化沟（OD）之间 ARG/VG 多样性的差异，以及 ARGs 和 VGs 之间的时间共同发生模式。结果表明，由于 MBR 具有更好的消毒能力，短期内在 MBR 中的 ARGs 和 VGs 的多样性低于 OD。然而，由于温度的巨大变化，两种反应器之间的多样性差异在长期内消失了。相反，观察到时间衰减关系，总周转率为-0.0105。共同发生模式表明，由于 ARGs 和 VGs 对环境变化的不同反应，ARGs 和 VGs 之间的直接联系随着时间的增加而急剧减少。
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