Evolution of Listeria monocytogenes: Positive Selection and Recombination
Author Information
Author(s): Orsi Renato H, Sun Qi, Wiedmann Martin
Primary Institution: Cornell University
Hypothesis
How do positive selection and recombination contribute to the evolution of Listeria monocytogenes?
Conclusion
Recombination and positive selection both contribute to the evolution of L. monocytogenes, with lineage II showing a greater impact from these forces than lineage I.
Supporting Evidence
- Among 2267 genes, 1097 showed evidence for recombination.
- 36 genes were identified under positive selection.
- Positive selection was more abundant in lineage II than lineage I.
Takeaway
Scientists studied how two types of changes in bacteria, called positive selection and recombination, help Listeria monocytogenes evolve and adapt to different environments.
Methodology
The study analyzed genome sequences of L. monocytogenes and L. innocua strains to assess positive selection and recombination.
Potential Biases
Potential bias due to the selection of specific strains for analysis.
Limitations
The study focused on a limited number of strains and may not represent all genetic diversity in Listeria.
Participant Demographics
The study included various strains of L. monocytogenes and L. innocua, but specific demographic details were not provided.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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