Deepti Tyagi

Position: Research Assistant
Lab: Van Es 126, 130
Office: Van Es 193
Program: Microbiology MS
Advisor: Dr. T. Bergholz

Graduate Student Profile

Education:
BS in Biotechnology from North Dakota State University

Research Focus:
Produce-associated foodborne outbreaks have increased over the last few decades. The potential exists for produce to become contaminated with enteric pathogens in the pre-harvest environment. Since produce is often minimally processed or consumed raw, consumers' are at risk of exposure to severe gastrointestinal illnesses. Once contamination occurs, these pathogens are able to survive on produce for varying lengths of time, yet little is known about the physiological state of these pathogens on produce. Thus, the goal of my research is to determine how different environmental factors impact the ability of two enteric pathogens: Enterohemorrhagic E.coli and Salmonella, to survive on pre-harvest lettuce. We are focusing on understanding what stress responses could be activated or repressed under different seasonal conditions by quantifying changes in gene expression over time.

Our lab studies various stresses encountered by enteric pathogens such as Listeria monocytogenes, E.coli O157:H7 and Salmonella enterica and how these stresses effect their survival and virulence.

Departmental Involvement:
VMS Graduate Student Association