• 文献标题:   Graphene nano zinc oxide reduces the expression and release of antibiotic resistance-related genes and virulence factors in animal manure
  • 文献类型:   Article
  • 作  者:   ZHANG HB, GUAN WK, SHU J, YU S, XIONG YM, LIU G, ZHONG YH, CHEN J, ZHAO ZG, HE N, XING QF, GUO DS, LI LZ, HONGBING O
  • 作者关键词:   graphene nano zinc oxide, bacterial chemotaxi, antibiotic resistance gene, virulence factor, cattle manure production
  • 出版物名称:   SCIENCE OF THE TOTAL ENVIRONMENT
  • ISSN:   0048-9697 EI 1879-1026
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1016/j.scitotenv.2023.163520 EA APR 2023
  • 出版年:   2023

▎ 摘  要

Animal manure contains many antibiotic resistance genes (ARGs) and virulence factors (VFs), posing significant health threats to humans. However, the effects of graphene nano zinc oxide (GZnONP), a zinc bioaugmentation substitute, on bacterial chemotaxis, ARGs, and VFs in animal manure remain scanty. Herein, the effect of GZnONP on the in vivo an-aerobic expression of ARGs and VFs in cattle manure was assessed using high-throughput sequencing. Results showed that GZnONP inhibited bacterial chemotaxis by reducing the zinc pressure under anaerobic fermentation, altering the microbial community structure. The expression of ARGs was significantly lower in GZnONP than in zinc oxide and nano zinc oxide (ZnONP) groups. The expression of VFs was lower in the GZnONP than in the zinc oxide and ZnONP groups by 9.85 % and 13.46 %, respectively. Co-occurrence network analysis revealed that ARGs and VFs were expressed by the Spirochaetes phylum, Paraprevotella genus, and Treponema genus et al. The ARGs-VFs coexis-tence was related to the expression/abundance of ARGs and VFs genes. GZnONP reduces the abundance of certain bac-terial species by disrupting chemotaxis, minimizing the transfer of ARGs and VFs. These findings suggest that GZnONP, a bacterial chemotaxis suppressor, effectively reduces the expression and release of ARGs and VFs in animal manure.