title: Rapid genotyping assays for the identification and differentiation of Yersinia ruckeri biotype 2 strains.
abstract: OBJECTIVE
  To establish PCR-based assays for the rapid identification and differentiation of each of four known biotype 2 (BT2) phenotype-causing alleles in Yersinia ruckeri strains currently circulating in Europe and the United States.
  
  
  RESULTS
  Novel assays were developed relying on detection of mutant allele-specific changes in restriction enzyme cleavage sites within targeted PCR products. The developed assays were validated against isolates previously genotyped by DNA sequencing.
  
  
  CONCLUSIONS
  The described methods were specific, rapid and simple to perform and interpret.
  
  
  CONCLUSIONS
  The developed genotyping assays provide a valuable tool for identification and differentiation of specific BT2 strains of Y. ruckeri. These assays will be critical for the design and validation of new vaccines or other measures meant to control BT2 strains.
authors: National Center for Cool and Cold Water Aquaculture, Agricultural Research Service, US Department of Agriculture, Kearneysville, WV 25430, USA. tim.welch@ars.usda.gov
authors: T J
authors: TJ
authors: Welch
mesh_terms: D000818:Animals; D005060:Europe; D005393:Fish Diseases / Q000175:diagnosis / Q000382:microbiology*; D005838:Genotype; D016133:Polymerase Chain Reaction / Q000379:methods*; D014481:United States; D015009:Yersinia Infections / Q000175:diagnosis / Q000382:microbiology / Q000662:veterinary*; D044124:Yersinia ruckeri / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*