Life Sciences Commons^™

The Bacterial Soft Rot Pathogens, Pectobacterium Carotovorum And P. Atrosepticum, Respond To Different Classes Of Virulence-Inducing Host Chemical Signals, Paul A. Agyemang, Md Niamul Kabir, Caleb M. Kersey, C. Korsi Dumenyo

Agricultural and Environmental Sciences Faculty Research

Soft rot bacteria of the Pectobacterium and Dickeya genera are Gram-negative phytopathogens that produce and secrete plant cell wall-degrading enzymes (PCWDE), the actions of which lead to rotting and decay of their hosts in the field and in storage. Host chemical signals are among the factors that induce the bacteria into extracellular enzyme production and virulence. A class of compounds (Class I) made up of intermediate products of cell wall (pectin) degradation induce exoenzyme synthesis through KdgR, a global negative regulator of exoenzyme production. While the KdgR− mutant of P. carotovorum is no longer inducible by Class I inducers, we …