Impacts of reclaimed water irrigation on soil antibiotic resistome in urban parks of Victoria, Australia

doi:10.1016/j.envpol.2015.12.033

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	Impacts of reclaimed water irrigation on soil antibiotic resistome in urban parks of Victoria, Australia
	Shi, Xiu-Zhen; Han, Xue-Mei; Hu, Hang-Wei; He, Ji-Zheng; Chen, Deli; Han, Li-Li; Wang, Jun-Tao
刊名	ENVIRONMENTAL POLLUTION
	2016-04
卷号	211 页码:48-57
关键词	Antibiotic Resistance Gene Reclaimed Water Class 1 Integron Beta-lactamase Soil Resistome
DOI	10.1016/j.envpol.2015.12.033
英文摘要	The effluents from wastewater treatment plants have been recognized as a significant environmental reservoir of antibiotics and antibiotic resistance genes (ARGs). Reclaimed water irrigation (RWI) is increasingly used as a practical solution for combating water scarcity in arid and semiarid regions, however, impacts of RWI on the patterns of ARGs and the soil bacterial community remain unclear. Here, we used high-throughput quantitative PCR and terminal restriction fragment length polymorphism techniques to compare the diversity, abundance and composition of a broad-spectrum of ARGs and total bacteria in 12 urban parks with and without RWI in Victoria, Australia. A total of 40 unique ARGs were detected across all park soils, with genes conferring resistance to beta-lactam being the most prevalent ARG type. The total numbers and the fold changes of the detected ARGs were significantly increased by RWI, and marked shifts in ARG patterns were also observed in urban parks with RWI compared to those without RWI. The changes in ARG patterns were paralleled by a significant effect of RWI on the bacterial community structure and a co-occurrence pattern of the detected ARG types. There were significant and positive correlations between the fold changes of the integrase intI1 gene and two beta-lactam resistance genes (KPC and IMP-2 groups), but no significant impacts of RWI on the abundances of intI1 and the transposase tnpA gene were found, indicating that RWI did not improve the potential for horizontal gene transfer of soil ARGs. Taken together, our findings suggested that irrigation of urban parks with reclaimed water could influence the abundance, diversity, and compositions of a wide variety of soil ARGs of clinical relevance. One-sentence summary: Irrigation of urban parks with treated wastewater significantly increased the abundance and diversity of various antibiotic resistance genes, but did not significantly enhance their potential for horizontal gene transfer. (C) 2015 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/36252]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Shi, Xiu-Zhen,Han, Xue-Mei,Hu, Hang-Wei,et al. Impacts of reclaimed water irrigation on soil antibiotic resistome in urban parks of Victoria, Australia[J]. ENVIRONMENTAL POLLUTION,2016,211:48-57.
APA	Shi, Xiu-Zhen.,Han, Xue-Mei.,Hu, Hang-Wei.,He, Ji-Zheng.,Chen, Deli.,...&Wang, Jun-Tao.(2016).Impacts of reclaimed water irrigation on soil antibiotic resistome in urban parks of Victoria, Australia.ENVIRONMENTAL POLLUTION,211,48-57.
MLA	Shi, Xiu-Zhen,et al."Impacts of reclaimed water irrigation on soil antibiotic resistome in urban parks of Victoria, Australia".ENVIRONMENTAL POLLUTION 211(2016):48-57.