Hidden genetic variation in plasticity provides the potential for rapid adaptation to novel environments.
Hidden genetic variation in plasticity provides the potential for rapid adaptation to novel environments.
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可塑性中隐藏的遗传变异提供了快速适应新环境的潜力。
DOI：
10.1111/nph.18744
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Walter GM
中科院分区：
文献类型：
--
作者：
Walter GM
快速的环境变化迫使人类进入可塑性不再保持健康的环境。进化理论预测，当种群暴露在新的环境中时，适应度的遗传变异将会增加，这应该与可塑性的遗传差异有关。为了验证在新环境中适合度的遗传变异是否增加了适合度的遗传变异及其与可塑性的关系，我们将一株西西里雏菊314个基因型的8149个无性系移植到其原生范围内外，量化了适合度、叶片性状和基因表达的可塑性的遗传变异。虽然在新环境中平均适合度下降了87%，但适合度的遗传方差增加了3倍，并与叶片性状的可塑性相关。高适合度基因型在基因表达上表现出较大的可塑性，但在大多数叶片性状上表现出较低的可塑性。有趣的是，在新环境中适合度最高的基因型在原生地点的适合度最低。这些结果表明，可塑性的长期遗传变异可以帮助种群持续和适应新的环境，尽管种群隐藏在原生环境中。
Rapid environmental change is forcing populations into environments where plasticity will no longer maintain fitness. When populations are exposed to novel environments, evolutionary theory predicts that genetic variation in fitness will increase and should be associated with genetic differences in plasticity. If true, then genetic variation in plasticity can increase adaptive potential in novel environments, and population persistence via evolutionary rescue is more likely.To test whether genetic variation in fitness increases in novel environments and is associated with plasticity, we transplanted 8149 clones of 314 genotypes of a Sicilian daisy (Senecio chrysanthemifolius) within and outside its native range, and quantified genetic variation in fitness, and plasticity in leaf traits and gene expression.Although mean fitness declined by 87% in the novel environment, genetic variance in fitness increased threefold and was correlated with plasticity in leaf traits. High fitness genotypes showed greater plasticity in gene expression, but lower plasticity in most leaf traits. Interestingly, genotypes with the highest fitness in the novel environment had the lowest fitness at the native site.These results suggest that standing genetic variation in plasticity could help populations to persist and adapt to novel environments, despite remaining hidden in native environments.
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影响因子：
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作者：
Oostra V;Saastamoinen M;Zwaan BJ;Wheat CW
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DOI：
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发表时间：
2019
期刊：
bioRxiv
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DOI：
10.1101/422261
发表时间：
2018
期刊：
bioRxiv
影响因子：
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作者：
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Melissa H. Pespeni
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影响因子：
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作者：
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