ArticleJournal of evolutionary biology2022
Environment dependence of the expression of mutational load and species' range limits.
Article in Journal of evolutionary biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- The legacy of past climate warming: strong local adaptation in rear-edge populations.Evolution letters · 2026Article
- Mutational load and adaptive variation are shaped by climate and species range dynamics in Vitis arizonica.The New phytologist · 2025Article
- Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges.Heredity · 2023Article
- A biome-dependent distribution gradient of tree species range edges is strongly dictated by climate spatial heterogeneity.Nature plants · 2023Article
- Environment dependence of the expression of mutational load and species' range limits.Journal of evolutionary biology · 2022Article
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Authors and funding
3 authors.
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Abstract
Theoretical and empirical research on the causes of species' range limits suggest the contribution of several intrinsic and extrinsic factors, with potentially complex interactions among them. An intrinsic factor proposed by recent theory is mutational load increasing towards range edges because of genetic drift. Furthermore, environmental quality may decline towards range edges and enhance the expression of load. Here, we tested whether the expression of mutational load associated with range limits in the North American plant Arabidopsis lyrata was enhanced under stressful environmental conditions by comparing the performance of within- versus between-population crosses at common garden sites across the species' distribution and beyond. Heterosis, reflecting the expression of load, increased with heightened estimates of genomic load and with environmental stress caused by warming, but the interaction was not significant. We conclude that range-edge populations suffer from a twofold genetic Allee effect caused by increased mutational load and stress-dependent load linked to general heterozygote deficiency, but there is no synergistic effect between them.
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