R. Woyda

Population genomic analysis of an emerging pathogen Lonsdalea quercina affecting various species of oaks in western North America

This study uses whole genome sequencing to analyze the population structure and phylogenetic relationships of Lonsdalea quercina, revealing distinct genetic patterns between Colorado and California populations and suggesting independent emergence driven by environmental changes.

Litter commensal bacteria can limit the horizontal gene transfer of antimicrobial resistance to Salmonella in chickens

This study shows that commensal bacteria in reused chicken litter reduce horizontal gene transfer of antimicrobial resistance plasmids to Salmonella.

Gene flux and acid-imposed selection are the main drivers of antimicrobial resistance in broiler chicks infected with Salmonella enterica serovar Heidelberg

This study shows that antibiotic-resistant Salmonella can acquire resistance from gut commensals in antibiotic-free broiler chicks, driven by horizontal gene transfer and acidic selection pressure, suggesting antibiotic reduction alone may not limit resistance spread.