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Zhang H, Zhao Z, Guan W, Zhong Y, Wang Y, Zhou Q, Liu F, Luo Q, Liu J, Ni J, He N, Guo D, Li L, Xing Q. Nano-Selenium inhibited antibiotic resistance genes and virulence factors by suppressing bacterial selenocompound metabolism and chemotaxis pathways in animal manure. Ecotoxicol Environ Saf 2023; 263:115277. [PMID: 37499390 DOI: 10.1016/j.ecoenv.2023.115277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
Numerous antibiotic resistance genes (ARGs) and virulence factors (VFs) found in animal manure pose significant risks to human health. However, the effects of graphene sodium selenite (GSSe), a novel chemical nano-Selenium, and biological nano-Selenium (BNSSe), a new bioaugmentation nano-Se, on bacterial Se metabolism, chemotaxis, ARGs, and VFs in animal manure remain unknown. In this study, we investigated the effects of GSSe and BNSSe on ARGs and VFs expression in broiler manure using high-throughput sequencing. Results showed that BNSSe reduced Se pressure during anaerobic fermentation by inhibiting bacterial selenocompound metabolism pathways, thereby lowering manure Selenium pollution. Additionally, the expression levels of ARGs and VFs were lower in the BNSSe group compared to the Sodium Selenite and GSSe groups, as BNSSe inhibited bacterial chemotaxis pathways. Co-occurrence network analysis identified ARGs and VFs within the following phyla Bacteroidetes (genera Butyricimonas, Odoribacter, Paraprevotella, and Rikenella), Firmicutes (genera Lactobacillus, Candidatus_Borkfalkia, Merdimonas, Oscillibacter, Intestinimonas, and Megamonas), and Proteobacteria (genera Desulfovibrio). The expression and abundance of ARGs and VFs genes were found to be associated with ARGs-VFs coexistence. Moreover, BNSSe disruption of bacterial selenocompound metabolism and chemotaxis pathways resulted in less frequent transfer of ARGs and VFs. These findings indicate that BNSSe can reduce ARGs and VFs expression in animal manure by suppressing bacterial selenocompound metabolism and chemotaxis pathways.
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Affiliation(s)
- Haibo Zhang
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Zhigang Zhao
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Weikun Guan
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Yuhong Zhong
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Yang Wang
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Qilong Zhou
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Fuyu Liu
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Qi Luo
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Junyi Liu
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Jian Ni
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Ning He
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Dongsheng Guo
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China
| | - Lizhi Li
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China.
| | - Qingfeng Xing
- College of Life Science and Resources and Environment, Yichun University, Yi Chun 336000, China.
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