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Effect of temperature on sulfonamide antibiotics degradation, and on antibiotic resistance determinants and hosts in animal manures

文献类型： 外文期刊

作者： Lin, Hui 1 ; Zhang, Jin 4 ; Chen, Hongjin 2 ; Wang, Jianmei 3 ; Sun, Wanchun 1 ; Zhang, Xin 4 ; Yang, Yuyi 5 ; Wang, Qian 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Environm Resources & Soil Fertilizers, Hangzhou 310021, Zhejiang, Peoples R China

2.Plant Management Bur Zhejiang Prov, Hangzhou 310020, Zhejiang, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China

4.Zhejiang Agr & Forestry Univ, Coll Forest & Biotechnol, Linan 311300, Peoples R China

5.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China

关键词： Sulfonamide antibiotic;Antibiotic resistance gene;Resistant bacteria;Animal manure;Temperature

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

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收录情况： SCI

摘要： Abstract Animal manure is a main reservoir of antibiotic residues and antibiotic resistance. Here, the effect of temperature on sulfonamide antibiotics (SAs), sulfonamide-resistant (SR) genes/bacteria was investigated by aerobically incubating swine and chicken manures at different temperatures. In swine manure, the SAs concentration declined with increasing temperature, with a minimum at 60°C. In chicken manure, the greatest degradation of SAs was noted at 30°C. The reduction of relative abundance of antibiotic resistance genes (ARGs) and sul-positive hosts in swine manure was more pronounced during thermophilic than mesospheric incubation; neither temperature conditions effectively reduced these parameters in chicken manure. The relationship between the residual levels/distribution profiles of SAs, ARGs (sul1, sul2 and intI1), cultivable SR bacteria and sul-positive hosts was further established. The antibiotic residual profile, rather than antibiotic concentration, acted as an important factor in the prevalence of ARGs and sul-positive hosts in manure. Corynebacterium and Leucobacter from the phylum Actinobacteria tend to be main carriers of sul1 and intI1; the relative abundance of sul2 was significantly correlated with the relative abundance of cultivable SR bacteria. Overall, differences in resistant bacterial communities also constitute a dominant factor affecting ARG variation. This study contributes to management options for reducing the pollution of antibiotics and antibiotic resistance within manure. Graphical abstract Display Omitted Highlights ? Temperature response of sulfonamide resistance in manure during aerobic incubation ? The effect of temperature on SAs and SR gene/bacteria vary with manure types ? Thermophilic removal of SAs and SR genes/bacteria is only evident in swine manure ? The antibiotic residual profile affects the

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