Zhang Dan-Dan, Guo Ya-Ping, Ren Hong-Yun, Zhou Xin-Yuan, Huang Fu-Yi, Zhang Xian
Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
Huan Jing Ke Xue. 2018 Jun 8;39(6):2600-2606. doi: 10.13227/j.hjkx.201710121.
Many cities are located in the downstream areas of rivers. Rapid urbanization may result in drastic changes in the urban river ecosystem. Antibiotic resistant genes (ARGs) are considered to be emerging environmental pollutants, which may do harm to the health of humans and may pose a potential risk for urban ecological safety by the dissemination and enrichment of ARGs in urban rivers. In this study, a high-throughput quantitative PCR technique was used to investigate the diversity and abundance of ARGs at three sites in Lianjiang County and the estuary of the Aojiang River, Fujian Province. The results show the abundance of ARGs in the downstream urban area of Lianjiang County (3.9×10 copies·L) is significantly higher than upstream of the urban area and the estuary of the Aojiang River. A total of 129 ARGs are detected in the downstream urban area, which is higher than in the upstream and the estuary. The results also suggest that ARGs are persistent and not easy to reduce in the natural river following the occurrence of ARGs and indicated that the urban river is an important reservoir of ARGs.
许多城市位于河流的下游地区。快速的城市化可能导致城市河流生态系统发生剧烈变化。抗生素抗性基因（ARGs）被认为是新兴的环境污染物，它们可能对人类健康造成危害，并可能通过ARGs在城市河流中的传播和富集对城市生态安全构成潜在风险。在本研究中，采用高通量定量PCR技术对福建省连江县三个地点以及敖江口的ARGs多样性和丰度进行了调查。结果表明，连江县下游城区（3.9×10拷贝·L）的ARGs丰度显著高于城区上游和敖江口。在下游城区共检测到129种ARGs，高于上游和河口地区。结果还表明，ARGs在自然河流中出现后具有持久性且不易减少，这表明城市河流是ARGs的重要储存库。
