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Biochar combined with polyvalent phage therapy to mitigate antibiotic resistance pathogenic bacteria vertical transfer risk in an undisturbed soil column system

文献类型: 外文期刊

作者: Sun, Mingming 1 ; Ye, Mao 2 ; Zhang, Zhongyun 2 ; Zhang, Shengtian 1 ; Zhao, Yuanchao 1 ; Deng, Shaopo 3 ; Kong, Lingy 1 ;

作者机构: 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Soil Ecol Lab, Nanjing 210095, Jiangsu, Peoples R China

2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China

3.Minist Environm Protect China, Nanjing Inst Environm Sci, Nanjing 210042, Jiangsu, Peoples R China

4.Anhui Acad Environm Sci Res, Hefei 230022, Anhui, Peoples R China

5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China

6.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China

关键词: Antibiotic resistance pathogenic bacteria; ARGs; Phage therapy; Biochar; Soil column

期刊名称:JOURNAL OF HAZARDOUS MATERIALS ( 影响因子:10.588; 五年影响因子:10.129 )

ISSN: 0304-3894

年卷期: 2019 年 365 卷

页码:

收录情况: SCI

摘要: The vertical migration of antibiotic resistance pathogenic bacteria (ARPB) and antibiotic resistance genes (ARGs) in the surface soil-vadose soil system has become a new threat to ecological safety and public health; there is an imperative need to develop an efficient technique for targeted control and inactivation of ARPB in these systems. In this work, undisturbed soil columns (0 similar to -5 m) were constructed to investigate the impact of biochar amendment or/and polyvalent bacteriophage (Phi YSZ-KK) therapy on the vertical control and inactivation of tetracycline-resistant Escherichia coil K-12 and chloramphenicol-resistant Klebsiella pneumonia K-6. The si7 multaneous application of polyvalent phage and biochar impeded the vertical migration of ARPB from the top soil to lower soil layers and stimulated the ARPB dissipation in the soil column. After 60-day incubation, levels of ARPB and ARGs decreased significantly in the soil column by magnitudes of 2-6. Additionally, high throughput sequencing indicated that the simultaneous application of biochar and phage clearly maintained the structure and diversity of the soil microbial communities (p < 0.05). This work therefore demonstrates that the application of a biochar/phage combination is an environmentally friendly, efficacious measure for the control and inactivation of ARPB/ARGs in vertical soil column systems.

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