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Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species
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Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species

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Genome sequence of the clinical O4:K12 serotype Vibrio parahaemolyticus strain 10329

N Gonzalez-Escalona1, E A Strain, A J De Jesús

  • 1Center for Food Safety and Applied Nutrition, Food andDrug Administration, College Park, MD 20740, USA. narjol.gonzalez-escalona@fda.hhs.gov

Journal of Bacteriology
|May 10, 2011
PubMed

Insights

Vibrio parahaemolyticus causes global foodborne illness. This study details the genome of a U.S. West Coast O4:K12 strain (ST36) linked to oyster-associated illness, noting its lower infection dose despite key virulence genes.

Area of Science:

  • Microbiology
  • Genomics
  • Food Safety

Background:

  • Vibrio parahaemolyticus is a major cause of bacterial foodborne illness globally.
  • Certain serotypes and clonal complexes are associated with significant human infections, particularly from seafood consumption.
  • Understanding the genetic basis of virulence and infectivity is crucial for public health interventions.

Purpose of the Study:

  • To perform whole-genome sequencing of a Vibrio parahaemolyticus O4:K12 strain (10329) from the U.S. West Coast.
  • To characterize the genetic makeup of this strain, particularly its virulence factors and clonal lineage.
  • To compare its infectivity potential with other geographically distinct strains possessing similar virulence determinants.

Main Methods:

  • Whole-genome sequencing and assembly of Vibrio parahaemolyticus strain 10329.
  • Serotyping (O4:K12) and sequence typing (ST36) to determine clonal complex.
  • Bioinformatic analysis to identify key virulence genes (tdh, trh) and compare with other strains.

Main Results:

  • A draft genome sequence for V. parahaemolyticus strain 10329 (O4:K12, ST36) was generated.
  • This strain belongs to the dominant U.S. West Coast clonal complex associated with oyster-associated illnesses.
  • The strain possesses tdh and trh virulence genes but exhibits lower infectivity in vivo compared to strains from the U.S. Gulf and Atlantic coasts.

Conclusions:

  • The genomic data provides insights into the genetic characteristics of a prevalent U.S. West Coast V. parahaemolyticus strain.
  • The presence of tdh and trh genes alongside a lower apparent infectivity dose suggests complex interactions influencing pathogenicity.
  • Further research is needed to elucidate the factors contributing to the observed differences in infectivity and disease potential.

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