Response characteristics of antibiotic resistance genes and bacterial communities during agricultural waste composting: Focusing on biogas residue combined with biochar amendments

被引:24
|
作者
He, Yuewei [1 ]
Yin, Xiaowei [2 ]
Li, Fanghong [1 ,4 ]
Wu, Bo [2 ]
Zhu, Ling [2 ]
Ge, Dabing [1 ]
Wang, Nanyi [1 ]
Chen, Anwei [1 ]
Zhang, Lihua [1 ]
Yan, Binghua [1 ]
Huang, Hongli [1 ]
Luo, Lin [1 ]
Wu, Genyi [1 ]
Zhang, Jiachao [1 ,2 ,3 ]
机构
[1] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China
[2] POWERCHINA Zhongnan Engn Corp Ltd, Changsha 410014, Hunan, Peoples R China
[3] Hunan Agr Univ Area, Yuelu Mt Lab, Changsha 410000, Hunan, Peoples R China
[4] Minist Ecol & Environm PR China, South China Inst Environm Sci, Guangzhou 510655, Peoples R China
基金
中国国家自然科学基金;
关键词
Antibiotic resistance gene; Mobile genetic element; Biochar; Biogas residue; Bacterial community structure; SWINE MANURE; PIG MANURE; SOIL; OXYTETRACYCLINE; SULFONAMIDES; INTEGRONS; ABUNDANCE; BEHAVIOR; REMOVAL; INTI1;
D O I
10.1016/j.biortech.2023.128636
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
This research investigated biogas residue and biochar addition on antibiotic resistance genes (ARGs), mobile genetic elements (MGEs), and changes in bacterial community during agricultural waste composting. Sequencing technique investigated bacterial community structure and ARGs, MGEs changes. Correlations among physico-chemical factors, ARGs, MGEs, and bacterial community structure were determined using redundancy analysis. Results confirmed that biochar and biogas residue amendments effectively lowered the contents of ARGs and MGEs. The main ARGs detected was sul1. Proteobacteria and Firmicutes were the main host bacteria strongly associated with the dissemination of ARGs. The dynamic characteristics of the bacterial community were strongly correlated with pile temperature and pH (P < 0.05). Redundancy and network analysis revealed that nitrate, intI1, and Firmicutes mainly affected the in ARGs changes. Therefore, regulating these key variables would effectively suppress the ARGs spread and risk of compost use.
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页数:9
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