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Using Generative Art to Convey Past and Future Climate Transitions

Using Generative Art to Convey Past and Future Climate Transitions

Published on: March 31, 2023

Parallel adaptation to climate above the 35th parallel.

Robin Burns¹, Polina Yu Novikova^2,3

¹Austrian Academy of Sciences, Gregor Mendel Institute of Plant Biology, Vienna, Austria.

Molecular Ecology

|February 22, 2020

Summary

Parallel climate adaptation in Arabidopsis lyrata did not involve the same genetic variants between lineages. Instead, adaptation occurred at the level of biological processes due to distinct evolutionary histories.

Keywords:

Arabidopsis climate adaptation parallel evolution

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Area of Science:

Evolutionary genetics
Plant adaptation
Population genetics

Background:

Parallel evolution, where different populations independently evolve similar traits from the same genetic changes, is crucial for understanding adaptation.
Genetic changes can arise from standing genetic variation or new mutations, excluding adaptive introgression.
Arabidopsis lyrata provides a model system to study climate adaptation due to its widespread distribution and distinct lineages.

Purpose of the Study:

To investigate the extent of parallel climate adaptation from standing genetic variation in two North American Arabidopsis lyrata lineages.
To identify specific genetic variants associated with climatic gradients and assess whether they are shared between lineages.
To understand the role of evolutionary history and demographic factors in shaping patterns of parallel adaptation.

Main Methods:

Analysis of genetic variation across climate gradients in two Arabidopsis lyrata lineages.
Identification of adaptive variants correlated with ecological climatic gradients.
Comparison of genetic variants and biological processes underlying adaptation between lineages.

Main Results:

Parallel evolution was not observed at the level of specific genetic variants or genes.
Adaptation to climate gradients occurred at the level of biological processes, not shared genetic changes.
Distinct post-glacial demographic histories, including separate glacial refugia and population bottlenecks, influenced allele frequencies and hindered parallel evolution.

Conclusions:

The scale of parallel climate adaptation in Arabidopsis lyrata is limited, occurring at the level of biological processes rather than shared genetic variants.
Different evolutionary trajectories and demographic histories between lineages prevent the repeated use of the same genetic changes for adaptation.
Understanding the interplay between genetic variation, demographic history, and environmental factors is essential for predicting adaptation patterns.