LOCAL ADAPTATION IN EUROPEAN POPULATIONS OF ARABIDOPSIS LYRATA (BRASSICACEAE)
LOCAL ADAPTATION IN EUROPEAN POPULATIONS OF ARABIDOPSIS LYRATA (BRASSICACEAE)
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DOI：
10.3732/ajb.0800080
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发表时间：
2009-06-01
影响因子：
3
通讯作者：
Savolainen, Outi
中科院分区：
文献类型：
--
作者：
Leinonen, Paivi H.;Sandring, Saskia;Savolainen, Outi
我们研究了当地的适应对比环境中使用的有机体，是新兴的作为一种模式的进化植物生物学异交，多年生草本植物拟南芥lyrata亚种。petraea（菊科）。通过相互移植实验，我们发现累积适合度的变化，表明种群之间的适应性分化。非本地人口没有显着高于本地人口的健身。实验地点位于挪威（阿尔卑斯山）。瑞典（沿海）和德国（大陆）。在所有网站一年后，当地人口有较高的累积健身，量化生存结合莲座区，比至少一个非本地人口。在挪威的研究中心，又进行了两年的测量，健身差异仍然存在。贡献最大的累积健身差异的健身组件不同的网站。相对较小的莲座丛面积与德国植物产生的大量花序相结合，可能反映了生活史的分化。本研究结果表明，在A.在欧洲沿着一个气候梯度生长的琴琴。所研究的群体具有相当大的变化，有助于适应性群体分化的几个字符。丰富的遗传信息使A. lyrata也是一个非常有吸引力的系统，用于研究植物局部适应的功能和遗传基础。
We studied local adaptation to contrasting environments using an organism that is emerging as a model for evolutionary plant biology-the outcrossing, perennial herb Arabidopsis lyrata subsp. petraea (Brassicaceae). With reciprocal transplant experiments, we found variation in cumulative fitness, indicating adaptive differentiation among populations. Nonlocal populations did not have significantly higher fitness than the local population. Experimental sites were located in Norway (alpine). Sweden (coastal), and Germany (continental). At all sites after one year, the local population had higher cumulative fitness, as quantified by survival combined with rosette area, than at least one of the nonlocal populations. At the Norwegian site, measurements were done for two additional years, and fitness differences persisted. The fitness components that contributed most to differences in cumulative fitness varied among sites. Relatively small rosette area combined with a large number of inflorescences produced by German plants may reflect differentiation in life history. The results of the current study demonstrate adaptive population differentiation in A. lyrata along a climatic gradient in Europe. The studied populations harbor considerable variation in several characters contributing to adaptive population differentiation. The wealth of genetic information available makes A. lyrata a highly attractive system also for examining the functional and genetic basis of local adaptation in plants.