Evolution of the SAL1 Gene Family in Mammals
Author Information
Author(s): Camille Meslin, Fanny Brimau, Patricia Nagnan-Le Meillour, Isabelle Callebaut, Géraldine Pascal, Philippe Monget
Primary Institution: INRA, France
Hypothesis
What is the evolutionary history and role of selective pressures on the SAL1 gene family in eutherian mammals?
Conclusion
The study reveals that the SAL1 gene family originated in eutherian mammals and underwent both concerted evolution and positive selection, influencing pheromone binding and possibly speciation.
Supporting Evidence
- The SAL1 gene family arose in eutherian mammals with lineage-specific duplications.
- Positive selection was detected for amino acids involved in pheromone binding.
- Some genes are subject to concerted evolution, suggesting a need for sequence homogeneity.
Takeaway
Scientists studied a gene family important for animal communication and found that it changed over time to help different species recognize each other better.
Methodology
Phylogenetic analysis, gene conversion testing, and selective pressure assessment using PAML.
Limitations
The study could not identify all positively selected sites due to gaps in sequence alignment.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website