Selection on S-RNases in Physalis and Solanum
Author Information
Author(s): Timothy Paape, Joshua R. Kohn
Primary Institution: University of Minnesota
Hypothesis
Are S-locus selection intensities higher in Physalis than in Solanum?
Conclusion
The intensity of selection at the S-locus was higher in Physalis, confirming differing selection intensities among self-incompatibility alleles from different populations.
Supporting Evidence
- Physalis S-RNase alleles showed higher selection intensities than Solanum alleles.
- 36 codons in Physalis were under greater selection compared to Solanum.
- Different sites were under selection in different lineages of S-RNases.
Takeaway
This study found that the S-RNases in Physalis are under stronger selection than those in Solanum, which helps explain how these plants avoid inbreeding.
Methodology
The study used maximum-likelihood and Bayesian coalescent methods to analyze selection on S-RNases.
Limitations
The study's power to detect selection may be limited due to the sample sizes of the alleles analyzed.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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