Association of prophage antiterminator Q alleles and susceptibility to food-processing treatments applied to Escherichia coli O157 in laboratory media.
Resistance of Escherichia coli O157 to inactivation by high-pressure processing, heat, and UV and gamma radiation was associated with the allele of the prophage-encoded antiterminator Q gene present upstream of the Shiga toxin gene stx2. Increased processing may be required to kill certain strains of E. coli O157, and the choice of strains used as surrogate markers for processing efficiency is critical.
Malone
Aaron S
AS
Department of Food Science and Technology, The Ohio State University, Parker Hall, 2015 Fyffe Court, Columbus, Ohio 43210, USA.
Yousef
Ahmed E
AE
LeJeune
Jeffrey T
JT
D000483:Alleles; D001426:Bacterial Proteins / Q000235:genetics*; D015169:Colony Count, Microbial; D019453:Escherichia coli O157 / Q000187:drug effects / Q000254:growth & development* / Q000528:radiation effects; D005511:Food Handling / Q000379:methods*; D005516:Food Microbiology; D005720:Gamma Rays; D006358:Hot Temperature; D011312:Pressure; D039002:Prophages; D016601:RNA-Binding Proteins / Q000235:genetics*; D014466:Ultraviolet Rays
D001426:Bacterial Proteins; D016601:RNA-Binding Proteins; C064872:antiterminator proteins, Bacteria