Climate envelope modelling reveals intraspecific relationships among flowering phenology, niche breadth and potential range size in Arabidopsis thaliana
Climate envelope modelling reveals intraspecific relationships among flowering phenology, niche breadth and potential range size in Arabidopsis thaliana
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DOI：
10.1111/j.1461-0248.2012.01796.x
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发表时间：
2012-08-01
期刊：
影响因子：
8.8
通讯作者：
Purugganan, Michael D.
中科院分区：
文献类型：
--
作者：
Banta, Joshua A.;Ehrenreich, Ian M.;Purugganan, Michael D.
物种往往在重要的生态性状上存在大量的表型变异，其中一些变异是基于遗传的。了解这种遗传变异是如何在空间上构成的，有助于了解物种的生态耐受性和范围限制。我们模拟了从早花到晚花的拟南芥基因型的气候包膜，作为几个气候变量的函数。我们发现，在各个开花时间座位上等位基因差异较大的基因型在潜在范围、大小和生态位宽度上存在显着差异。我们还发现，开花较晚的品种比开花较早的品种具有更大的限制范围潜力和更窄的生态位宽度，这表明开花时的局部选择可以限制或增强种群在其他地区定居的能力。我们的研究展示了纳入生态重要性遗传变异的气候包络模型如何提供对物种宏观生态的洞察，这对于了解物种对不断变化的环境的反应是重要的。
Species often harbour large amounts of phenotypic variation in ecologically important traits, and some of this variation is genetically based. Understanding how this genetic variation is spatially structured can help to understand species ecological tolerances and range limits. We modelled the climate envelopes of Arabidopsis thaliana genotypes, ranging from early- to late-flowering, as a function of several climatic variables. We found that genotypes with contrasting alleles at individual flowering time loci differed significantly in potential range size and niche breadth. We also found that later flowering genotypes had more restricted range potentials and narrower niche breadths than earlier flowering genotypes, indicating that local selection on flowering can constrain or enhance the ability of populations to colonise other areas. Our study demonstrates how climate envelope models that incorporate ecologically important genetic variation can provide insights into the macroecology of a species, which is important to understand its responses to changing environments.