Key Findings:
- New research from Virginia Tech reveals that soil ecosystems are a significant reservoir for antibiotic resistance genes (ARGs).
- Environmental factors like pollution and land use can amplify ARGs, increasing the risk of resistant bacteria infecting humans.
- The study focused on Listeria monocytogenes, a soil bacterium that can enter the food chain and cause serious illness.
In a study published in Nature Communications, Virginia Tech researchers analyzed nearly 600 Listeria genomes from soil samples across the U.S. They identified five key ARGs linked to antibiotic resistance. The study found that aluminum-rich soil increased ARG diversity, while magnesium-rich soil reduced it.
Environmental factors such as agriculture and wildlife presence also influenced ARG spread, emphasizing soil ecosystems’ role in antibiotic resistance development.
The research highlights soil as an overlooked contributor to the global antibiotic resistance crisis. The study’s authors recommend proper waste disposal, careful soil management, and good hygiene practices after soil contact to help mitigate the spread of resistant bacteria.
Researchers hope to develop strategies that limit antibiotic resistance and protect public health by understanding how ARGs spread in soil bacteria like Listeria.
Source:
Liao, J., Goh, Y.-X., Pruden, A., Krometis, L.-A., Zhang, H., & Ponder, M. (2024). Nature Communications. Virginia Tech.