Rapid Adaptation to Climate Facilitates Range Expansion of an Invasive Plant
Rapid Adaptation to Climate Facilitates Range Expansion of an Invasive Plant
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DOI：
10.1126/science.1242121
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发表时间：
2013-10-18
期刊：
影响因子：
56.9
通讯作者：
Barrett, Spencer C. H.
中科院分区：
文献类型：
--
作者：
Colautti, Robert I.;Barrett, Spencer C. H.
在当代时间尺度上不断演变的对气候的适应，可以促进跨越环境梯度的快速范围扩展。在这里，我们研究当地的适应沿着气候梯度在北美入侵植物千屈菜。我们表明，开花早的进化是适应在北方入侵前线，它增加健身一样多，或超过，释放敌人的影响和提高竞争力的演变。然而，早期开花减少了营养生长的投资，这使适应性在北美入侵开始的南方环境中降低了3倍。我们的研究结果表明，当地的适应可以迅速发展，在范围扩大，克服环境的限制繁殖生产。
Adaptation to climate, evolving over contemporary time scales, could facilitate rapid range expansion across environmental gradients. Here, we examine local adaptation along a climatic gradient in the North American invasive plant Lythrum salicaria. We show that the evolution of earlier flowering is adaptive at the northern invasion front where it increases fitness as much as, or more than, the effects of enemy release and the evolution of increased competitive ability. However, early flowering decreases investment in vegetative growth, which reduces fitness by a factor of 3 in southern environments where the North American invasion commenced. Our results demonstrate that local adaptation can evolve quickly during range expansion, overcoming environmental constraints on propagule production.