Karina B. Xavier

The paper tracks lineage evolution and transmission of Bacteroides thetaiotaomicron across hosts and ecological scales using genomic barcoding and whole-genome sequencing.

This study investigates how biofilms in multispecies gut microbiota communities enhance tolerance and stability during bile acid stress.

The paper shows that chronic gut inflammation drives bacterial and prophage hybridization in E. coli, leading to new genetic lineages associated with inflammatory bowel disease.

This study shows that soluble mucin glycans delay Escherichia coli phage T4 infection initiation but enhance virion stability and persistence in the gut.

This study shows that Klebsiella sp. ARO112 promotes microbiota recovery, clears pathobionts, and prevents inflammation in an IBD mouse model.

When pyoverdine and elastase are both needed, a pvdS mutant outcompetes the lasR cheater in P. aeruginosa and averts population collapse; a cost-ratio model with quorum sensing explains this.