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Effects of long-term manure applications on the occurrence of antibiotics and antibiotic resistance genes (ARGs) in paddy soils: Evidence from four field experiments in south of China

文献类型： 外文期刊

作者： Tang, Xianjin 1 ; Lou, Chenlu 1 ; Wang, Shaoxian 2 ; Lu, Yanhong 3 ; Liu, Ming; Hashmi, Muhammad Z.; Liang, Xinq 1 ;

作者机构： 1.Zhejiang Univ, Zhejiang Prov Key Lab Subtrop Soil & Plant Nutr, Coll Environm & Nat Resource Sci, Hangzhou 310003, Zhejiang, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer & Resource & Environm, Nanchang, Jiangxi, Peoples R China

3.So

关键词： Long-term manure application;Antibiotics;Antibiotic resistance genes (ARGs);Soil depths;Paddy soil

期刊名称：SOIL BIOLOGY & BIOCHEMISTRY （ 影响因子：7.609； 五年影响因子：8.312 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Most studies of the effects of manure amendment on the occurrence of antibiotics and antibiotic resistance genes (ARGs) in soil employ the investigation of grab samples or short-term laboratory studies. However, the effects of long-term manure applications on antibiotics, ARGs and their vertical distribution in paddy soil in field experiments are lacking. We assessed the concentrations of antibiotics, ARGs and their vertical distribution in paddy soil receiving long-term manure applications in four field experiments. High concentrations of tetracyclines were detected in most manured soils, while sulfonamides were not detectable. Long-term manure amendments generally increased the antibiotic concentrations and ARGs abundances in the paddy soil over decades. However, in some sites such significant trends of ARGs could not be observed. The abundance of ARGs was statistically correlated with antibiotics and soil properties including pH and soil organic matter (SOM), indicating their importance in the selection of resistance genes. Tetracyclines could be detected in soil at different depths and the concentrations of tetracyclines and abundance of ARGs generally decreased with increasing soil depths. (C) 2015 Elsevier Ltd. All rights reserved.

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