The present study describes a system based on PCR to distinguish tabtoxin-producing strains of Pseudomonas syringae from other Ps. syringae plant pathogens that produce chlorosis-inducing phytotoxins.
U.S. Department of Agriculture, Agricultural Research Service, Sustainable Agricultural Systems Laboratory, Beltsville, MD 20705, USA. lydonj@ba.ars.usda.gov
