题名: Compost-bulking agents reduce the reservoir of antibiotics and antibiotic resistance genes in manures by modifying bacterial microbiota
作者: Zhang, Xin4; Yang, Yuyi1,2; Sun, Wanchun3; Ma, Junwei3; Lin, Hui3; Zhang, Jin3,4
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
出版日期: 2019-02-01
卷号: 649, 页码:396-404
ISSN号: 0048-9697
关键词: Animal manure ; Antibiotic degradation ; Antibiotic resistance gene ; Bacterial community ; Compost-bulking agent
DOI: 10.1016/j.scitotenv.2018.08.212
英文摘要: Sawdust rice husk, and mushroom residues are commonly used as bulking agents during manure composting; this work evaluated their potentiality for enhancing the removal of antibiotics and antibiotic resistance genes (ARGs) under a temperature-consistent condition. Results indicated that the addition of all the compost-bulking agents increased antibiotic removal in swine manure with increasing rates of 14.9%-33.4%; however they showed less effect on the reduction of residual antibiotics in chicken manure where fluoroquinolone (FQs) antibiotics are the dominant antibiotics, partly owing to the weak promoting effects of bulking agents on FQs degradation. The addition of bulking agents somehow hindered the reduction of ARGs within swine manure, whereas there were obvious reductions in the total relative abundance of ARGs in chicken manure with bulking agents added. Among the three bulking agents, sawdust was the most efficient enhancer for antibiotic removal in both manures, and rice husk exhibited the best performance on ARGs reduction in chicken manure. The relationship between antibiotics, ARGs and bacteria communities was subsequently delineated. Proteobacteria was proposed to play key roles on the effect of bulking agent addition on antibiotics and ARGs in swine manure. Particularly, the increased Xanthomonadaceae contributed much to the promoted antibiotic degradation as well as the high level of ARGs in swine manure with sawdust added. By contrast, the changes in dominant bacterial families by the addition of bulking agents into chicken manure were not strong enough to effectively enhance antibiotic removal, but largely influenced the ARGs abundance. The large reductions of Paenibacillaceae and Staphylococcaceae by rice husk addition were closely related to the reduced ARGs in chicken manure with rice husk added. (C) 2018 Elsevier B.V. All rights reserved.
资助项目: National Natural Science Foundation of China[31672234] ; National Natural Science Foundation of China[31670110] ; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease[2010DS700124ZZ1602] ; Key Research and Development Program of Zhejiang Province[2018C02036] ; Project of Science and Technology Plan of Zhejiang Province[2017C32005]
WOS研究方向: Environmental Sciences & Ecology
语种: 英语
WOS记录号: WOS:000446076500035
出版者: ELSEVIER SCIENCE BV
Citation statistics:
内容类型: 期刊论文
URI标识: [http://202.127.146.157/handle/2RYDP1HH/6030]  
Appears in Collections:中国科学院武汉植物园


作者单位: 1.Univ Dundee, Sch Life Sci, Dundee DD1 5EH, Scotland
2.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Environm Resources Soil & Fertilizers, Hangzhou 310021, Zhejiang, Peoples R China
4.Zhejiang Agr & Forestry Univ, Coll Forest & Biotechnol, Linan 311300, Peoples R China
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