Salmonella is one of the most frequently reported causes of foodborne illness worldwide. Non-typhoidal serovars cause gastroenteritis in humans. Salmonella can grow on surfaces forming biofilms, contributing to its persistence since biofilms are difficult to eradicate due to the high resistance to antimicrobials and disinfectants. It has been described that there are two crucial biofilm promoti...

In a previous study, we identified Congo red-binding and -nonbinding phase variants of Escherichia coli serotype O157:H7 strain ATCC 43895. The Congo red-binding variant, strain 43895OR, produced a dry, aggregative colony that was similar to the red, dry, and rough (rdar) phenotype characteristic of certain strains of Salmonella. In contrast, variant 43895OW produced a smooth and white colony m...

Title of Dissertation: TOWARD A BETTER UNDERSTANDING OF THE CELLULAR, MOLECULAR AND GENETIC BASES OF THE RUGOSE MORPHOLOGY OF SALMONELLA TYPHIMURIUM Yuda Adha Anriany, Doctor of Philosophy, 2005 Dissertation directed by: Professor Sam W. Joseph Department of Cell Biology and Molecular Genetics The origin of rugose (wrinkled) colony morphology of Salmonella Typhimurium, which is formed only at s...