Ancient alleles drive contemporary climate adaptation in an alpine plant
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Date
2025-10-02
Publication Type
Journal Article
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yes
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Abstract
Adaptive evolution is key for species to persist in a warming climate. However, how adaptive genetic variants arise and shape both past and future evolutionary trajectories remains largely unknown. In this work, we integrate genomics with functional and ecological assays to unravel the evolutionary history and adaptive potential of alleles governing adaptation to climate through flowering time in an Alpine carnation. We reveal that “warm” and “cold” alleles of the flowering inhibitor CENTRORADIALIS (DsCEN/2) originated through recombination of highly divergent haplotypes during the carnation radiation, implicating ancestral variation in seeding climate-adaptive alleles. these alleles survived in glacial refugia before mediating the species’ range expansion in response to postglacial warming. We predict that, by recapitulating past evolution, warm alleles will continue to facilitate adaptation under future climate change.
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published
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Journal / series
Volume
390 (6768)
Pages / Article No.
59 - 64
Publisher
AAAS
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Subject
Organisational unit
03706 - Widmer, Alexander / Widmer, Alexander
02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science
Notes
Funding
160123 - Genomics of adaptation in the context of a rapid plant radiation (SNF)
182675 - Ecological Genomics of Plant Adaptation (SNF)
182675 - Ecological Genomics of Plant Adaptation (SNF)