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Multilocus hybridization typing in Pediococcus acidilactici strains.

Diego Mora1, Carlo Parini, Maria Grazia Fortina

  • 1Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, sezione Microbiologia Industriale, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy. diego.mora@unimi.it

Current Microbiology
|January 30, 2002
PubMed
Summary
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Genomic analysis of Pediococcus acidilactici strains revealed five distinct genotypes. Pediocin AcH/PA-1 producers form a single genomic lineage within this species.

Area of Science:

  • Microbiology
  • Genomics
  • Bacteriology

Background:

  • Previous multilocus typing identified genomic subpopulations in Pediococcus acidilactici.
  • These subpopulations were isolated from diverse environmental sources.

Purpose of the Study:

  • To further characterize five previously identified genomic subpopulations of Pediococcus acidilactici.
  • To confirm the genomic lineage of pediocin AcH/PA-1 producing strains.

Main Methods:

  • Restriction analysis of chromosomal DNA.
  • Hybridization assays using amplified fragments from five housekeeping genes (16S rDNA, rpoC, ldhD, ldhL, metS).
  • Computer-assisted similarity and clustering analysis of hybridization data.

Main Results:

Related Experiment Videos

  • The analysis confirmed the subdivision of Pediococcus acidilactici strains into five distinct genotypes.
  • The results validated the previously established genomic groupings.
  • Pediocin AcH/PA-1 producer strains were confirmed to belong to a single genomic lineage.

Conclusions:

  • The study confirms the genomic diversity within Pediococcus acidilactici.
  • Pediocin AcH/PA-1 producing strains represent a distinct and unified genomic lineage.