Positive Selection and Recombination in Actinobacillus pleuropneumoniae
Author Information
Author(s): Xu Zhuofei, Chen Huanchun, Zhou Rui
Primary Institution: Huazhong Agricultural University
Hypothesis
What roles do natural selective pressure and homologous recombination play in the adaptation of Actinobacillus pleuropneumoniae to its swine host?
Conclusion
Recombination and positive selection are crucial for the adaptive evolution of Actinobacillus pleuropneumoniae.
Supporting Evidence
- 23% of the core genome showed strong signals for intragenic homologous recombination.
- 57 genes were identified to be undergoing significant positive selection.
- Genes coding for bacterial surface structures are prone to natural selective pressure.
Takeaway
This study found that some genes in a bacteria that makes pigs sick are changing to help them survive better against the pig's immune system.
Methodology
A comparative phylogenomic approach was used to analyze 12 genomes of Actinobacillus pleuropneumoniae, focusing on genetic recombination and positive selection.
Limitations
The study primarily focused on core genome genes and may not represent all genetic variations.
Statistical Information
P-Value
0.004
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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