Geographic structure in a widespread plant-mycorrhizal interaction: pines and false truffles
Geographic structure in a widespread plant-mycorrhizal interaction: pines and false truffles
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DOI：
10.1111/j.1420-9101.2006.01287.x
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发表时间：
2007-05-01
影响因子：
2.1
通讯作者：
Thompson, J. N.
中科院分区：
文献类型：
--
作者：
Hoeksema, J. D.;Thompson, J. N.
互利互动可能会表现出强大的地理镶嵌在其共同进化的动态，但在这些相互作用的地理变异的结构是更差的特点比宿主-寄生虫的相互作用。我们使用了交叉接种实验，以表征的规模和模式，地理结构已经演变成三个松树种和外生菌根真菌种沿着北美西海岸之间的相互作用。我们发现大量的和对比鲜明的地理相互作用的植物和真菌的结构模式。真菌表现出的clinal模式的本地适应其宿主植物的地理范围内的三个沿海松树。与此相反，植物生长参数不受真菌的变化，但不同的植物种群和物种。植物和真菌的性能指标随纬度变化很大。这组结果表明，在这种广泛的物种相互作用，相互作用的物种可能会演变不对称的地理镶嵌，因为不同的进化反应临床不同的生物和非生物因素。
Mutualistic interactions are likely to exhibit a strong geographic mosaic in their coevolutionary dynamics, but the structure of geographic variation in these interactions is much more poorly characterized than in host-parasite interactions. We used a cross-inoculation experiment to characterize the scales and patterns at which geographic structure has evolved in an interaction between three pine species and one ectomycorrhizal fungus species along the west coast of North America. We found substantial and contrasting patterns of geographic interaction structure for the plants and fungi. The fungi exhibited a clinal pattern of local adaptation to their host plants across the geographic range of three coastal pines. In contrast, plant growth parameters were unaffected by fungal variation, but varied among plant populations and species. Both plant and fungal performance measures varied strongly with latitude. This set of results indicates that in such widespread species interactions, interacting species may evolve asymmetrically in a geographic mosaic because of differing evolutionary responses to clinally varying biotic and abiotic factors.