Amphibian skin bacteria contain a wide repertoire of genes linked to their antifungal capacities.

Summary: A deadly fungus is currently devastating amphibian populations worldwide, causing mass extinctions. However, scientists have noticed that some frog and salamander species manage to survive in the wild despite the presence of this pathogen. The secret to their survival appears to lie in the microscopic community living on their skin. In a recent study, researchers analyzed bacteria taken from the skin of surviving amphibians. They discovered that these bacteria act like tiny biological factories, possessing a vast array of genes capable of producing powerful antifungal compounds. These "good" bacteria produce chemical weapons—such as viscosin and fengycin—that inhibit the growth of the deadly fungus. This research highlights how the amphibian skin microbiome serves as a vital genetic reservoir, offering a natural shield against disease and potential pathways for new conservation treatments.