Gregg S. Pettis

Gregg S. Pettis is an Adjunct Associate Professor at Louisiana State University's College of Agriculture, Department of Plant Pathology & Crop Physiology. He holds a Ph.D. from the University of Missouri.

Research focuses on Gram-negative Vibrio and Gram-positive Streptomyces bacteria. Key investigations include phase variation mechanisms in Vibrio vulnificus, conjugation processes in Streptomyces species, and pathogenesis of plant diseases like sweetpotato soil rot. Research utilizes genomic approaches to study pathogen evolution and virulence factors.

Recent publications examine calcium's role in bacterial phase variation and biofilm formation (2011), and genetic determinants of pathogenicity in Streptomyces species (2011).