Genomic Patterns of Local Adaptation under Gene Flow in Arabidopsis lyrata
Genomic Patterns of Local Adaptation under Gene Flow in Arabidopsis lyrata
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DOI：
10.1093/molbev/msz149
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发表时间：
2019-11-01
影响因子：
10.7
通讯作者：
Savolainen, Outi
中科院分区：
文献类型：
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作者：
Hamala, Tuomas;Savolainen, Outi
短期局部适应是一个涉及选择、迁移和漂移的复杂过程。对基因组的预期影响在理论上是有充分依据的，但事实证明，在经验层面上检验这些影响是困难的，因为它需要关于地方选择、人口历史和重组率变异的信息。在这里，我们使用来自挪威两个海拔梯度的局部适应和表型分化的拟南芥种群，在全基因组水平上测试这些期望。人口统计学模型表明，梯度内的种群出现了分化
Short-scale local adaptation is a complex process involving selection, migration, and drift. The expected effects on the genome are well grounded in theory but examining these on an empirical level has proven difficult, as it requires information about local selection, demographic history, and recombination rate variation. Here, we use locally adapted and phenotypically differentiated Arabidopsis lyrata populations from two altitudinal gradients in Norway to test these expectations at the whole-genome level. Demography modeling indicates that populations within the gradients diverged