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Related Experiment Video

Updated: Jun 4, 2026

Multi-locus Variable-number Tandem-repeat Analysis of the Fish-pathogenic Bacterium Yersinia ruckeri by Multiplex PCR and Capillary Electrophoresis

Multi-locus Variable-number Tandem-repeat Analysis of the Fish-pathogenic Bacterium Yersinia ruckeri by Multiplex PCR and Capillary Electrophoresis

Published on: June 17, 2019

Multi-locus sequence typing.

¹Department of Zoology, University of Oxford, Oxford, UK.

Methods in Molecular Medicine

|February 22, 2011

Summary

This summary is machine-generated.

High horizontal genetic exchange in bacteria challenges traditional clonal models. This extensive recombination, particularly in Neisseria, complicates accurate phylogenetic analysis and long-term strain relatedness studies.

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Published on: July 15, 2011

Area of Science:

Microbiology
Genetics
Epidemiology

Background:

Traditional clonal models are insufficient for understanding bacterial diversity due to high horizontal genetic exchange.
Naturally transformable bacteria, like Neisseria, exhibit significant recombination.
Recombination impacts the reliability of phylogenetic analyses based on single genetic loci.

Purpose of the Study:

To highlight the inadequacy of clonal models in light of extensive bacterial horizontal genetic exchange.
To discuss the implications of high recombination rates for bacterial phylogenetics and epidemiology.
To explain why antigen genes are limited for long-term strain relatedness studies.

Main Methods:

Review of existing literature on bacterial genetic exchange and phylogenetics.
Analysis of the impact of horizontal gene transfer on phylogenetic inference.
Comparison of recombination rates at different genetic loci, including antigen genes.

Main Results:

Horizontal genetic exchange is prevalent in many bacterial populations, invalidating simple clonal models.
Phylogenetic trees derived from different loci often disagree due to recombination.
Antigen genes exhibit higher mutation and recombination rates, limiting their utility for long-term evolutionary studies.

Conclusions:

Bacterial diversity is shaped by substantial recombination, necessitating non-clonal models.
Accurate bacterial phylogenies require consideration of horizontal genetic exchange.
Long-term evolutionary relationships are best studied using genetic loci with lower recombination rates.