ANTIMICROBIAL RESISTANCE AT THE ONE HEALTH INTERFACE: GENOMIC DRIVERS, HORIZONTAL GENE TRANSFER, ENVIRONMENTAL RESERVOIRS, AND EMERGING CONTROL STRATEGIES

  • Dr. Stephen Kayode Ojo Department of Microbiology, Federal University Oye-Ekiti, Ekiti State, Nigeria
  • Prof. Jo-Anne Dillon Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Keywords: antimicrobial resistance, One Health; horizontal gene transfer, resistome, genomic surveillance, environmental reservoirs

Abstract

Antimicrobial resistance (AMR) has emerged as a significant One Health challenge as resistant bacteria and resistance genes spread continually within and between human, animal, food and environmental systems. It is a combination of genomic adaptation, selective pressure, mobile genetic elements and horizontal gene transfer that propel the emergence, persistence and dissemination of resistant populations. The review focused on the most important molecular and ecological factors that are driving AMR, including resistance mechanisms, the resistome and mobilome, plasmids, integrons, transposons, bacteriophages and conjugation, transformation and transduction. It also took into account the contribution of livestock, companion animals, food production, wastewater, agricultural soils, manure, surface waters and other environmental reservoirs to maintaining and promoting resistance determinants. Advances in whole-genome sequencing, metagenomics, genomic epidemiology, and bioinformatic resistance-gene detection have improved the capacity to trace resistant lineages and characterize antimicrobial resistomes across sectors. New control tactics include antimicrobial stewardship, infection prevention, antimicrobial peptides, bacteriophage, probiotics, anti-virulence strategies, plasmid-targeting strategies, clustered regularly interspaced short palindromic repeats (CRISPR)-based antimicrobials and improved wastewater treatment. Therefore, coordinated One Health surveillance, judicious use of antimicrobials, environmental stewardship, and precision genomic interventions are crucial for minimizing the spread and long-term prevalence of AMR worldwide.

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Published
2026-08-26
How to Cite
Dr. Stephen Kayode Ojo, & Prof. Jo-Anne Dillon. (2026). ANTIMICROBIAL RESISTANCE AT THE ONE HEALTH INTERFACE: GENOMIC DRIVERS, HORIZONTAL GENE TRANSFER, ENVIRONMENTAL RESERVOIRS, AND EMERGING CONTROL STRATEGIES. IJRDO - JOURNAL OF BIOLOGICAL SCIENCE, 12(3), 77-92. https://doi.org/10.69980/bs.v12i3.6814