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Related Experiment Videos

Exploring Lactobacillus plantarum genome diversity by using microarrays.

Douwe Molenaar1, Françoise Bringel, Frank H Schuren

  • 1Wageningen Centre for Food Sciences; NIZO food research, P.O. Box 20, 6710 BA Ede, The Netherlands.

Journal of Bacteriology
|August 20, 2005
PubMed
Summary

Lactobacillus plantarum exhibits significant genetic variation, particularly in genes for sugar metabolism, suggesting lifestyle adaptations. This genomic flexibility helps L. plantarum strains adapt to diverse environments and forms two distinct clusters.

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Area of Science:

  • Microbiology
  • Genomics
  • Bacterial Adaptation

Background:

  • Lactobacillus plantarum is known for its adaptability to various environments and its ability to metabolize diverse carbon sources.
  • This versatility suggests a flexible gene pool within the species.

Purpose of the Study:

  • To investigate the genetic basis of Lactobacillus plantarum's versatility by analyzing gene content variation.
  • To determine if genetic variability correlates with environmental adaptation and strain clustering.

Main Methods:

  • Utilized microarrays with genomic fragments of L. plantarum strain WCFS1 for genotyping.
  • Analyzed 20 L. plantarum strains from diverse sources for gene content variation.
  • Examined conserved and variable gene categories, focusing on regions of unusual base composition.

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Main Results:

  • Genes involved in structural compound biosynthesis/degradation were highly conserved.
  • Genes for sugar transport and catabolism showed significant variability.
  • Identified two large genomic regions (2.70-2.85 Mb and 3.10-3.29 Mb) with high gene content variation, primarily related to sugar metabolism.
  • Genotyping data revealed two distinct clusters of L. plantarum strains, aligning with previous classifications.

Conclusions:

  • The high variability in sugar metabolism genes within specific genomic regions supports the hypothesis of lifestyle adaptation regions in L. plantarum.
  • Genomic flexibility contributes to the ecological success and distinct clustering of L. plantarum strains.