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The potential for evolutionary rescue in an Arctic seashore plant threatened by climate change. | LitMetric

AI Article Synopsis

  • Climate change is really hard for plants that live in isolated places, like an endangered Arctic plant that doesn't adapt well to warming temperatures.
  • Scientists are studying how this plant might evolve or change to survive by using special breeding experiments.
  • They found that while some plant traits could adapt quickly, other important traits, like flowers, are going to take longer to change, which could make it harder for the plant to reproduce and survive in a warming world.

Article Abstract

The impacts of climate change may be particularly severe for geographically isolated populations, which must adjust through plastic responses or evolve. Here, we study an endangered Arctic plant, ssp. , confined to Fennoscandian seashores and showing indications of maladaptation to warming climate. We evaluate the potential of these populations to evolve to facilitate survival in the rapidly warming Arctic (i.e. evolutionary rescue) by utilizing manual crossing experiments in a nested half-sibling breeding design. We estimate G-matrices, evolvability and genetic constraints in traits with potentially conflicting selection pressures. To explicitly evaluate the potential for climate change adaptation, we infer the expected time to evolve from a northern to a southern phenotype under different selection scenarios, using demographic and climatic data to relate expected evolutionary rates to projected rates of climate change. Our results indicate that, given the nearly 10-fold greater evolvability of vegetative than of floral traits, adaptation in these traits may take place nearly in concert with changing climate, given effective climate mitigation. However, the comparatively slow expected evolutionary modification of floral traits may hamper the evolution of floral traits to track climate-induced changes in pollination environment, compromising sexual reproduction and thus reducing the likelihood of evolutionary rescue.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11445713PMC
http://dx.doi.org/10.1098/rspb.2024.1351DOI Listing

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