The Genetic Basis of Thermal Reaction Norm Evolution in Lab and Natural Phage Populations
2006
Thermal Adaptation in Bacterial Viruses
Sample size: 1000000
publication
Evidence: moderate
Author Information
Author(s): Jennifer Knies, Christina Burch, Joel Kingsolver
Hypothesis
How do genetic changes in phages affect their thermal performance in both lab and natural populations?
Conclusion
The study shows that genetic changes in phages undergoing thermal adaptations in the lab also influence their performance in natural populations.
Supporting Evidence
- The researchers used a new statistical method to analyze the adaptive responses of phages to temperature.
- Phages evolved higher growth rates at higher temperatures during the experiment.
- The optimal temperature explained the largest proportion of variation in reaction norm shape.
Takeaway
Scientists studied how viruses that infect bacteria adapt to different temperatures, finding that certain genetic changes help them grow better in warmer conditions.
Methodology
The researchers propagated phage clones through 50 transfers at varying temperatures and analyzed their growth rates and genetic changes.
Digital Object Identifier (DOI)
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