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首页> 外文期刊>The New Phytologist >Phylogenetic relationships among host plants explain differencesin fungal species richness and community composition inectomycorrhizal symbiosis
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Phylogenetic relationships among host plants explain differencesin fungal species richness and community composition inectomycorrhizal symbiosis

机译：寄主植物之间的亲缘关系解释了菌根共生中真菌种类丰富度和群落组成的差异

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Geographic and taxonomic host ranges determine the distribution of biotrophic organisms.Host phylogenetic distance strongly affects the community composition of pathogens andparasites, but little is known about the host phylogeny effect on communities of mutualists,such as plant–pollinator and plant–mycorrhizal fungi systems. By incorporating phylogenetic eigenvectors into univariate and multivariate models, weaimed to determine the relative contribution of host phylogeny and environmental variablesto mycorrhizal traits and community composition of ectomycorrhizal (EcM) fungi in Salicaceaeat the local scale. Host phylogeny explained 75% of the variation in fungal species richness and 20% of thevariation in community composition. We also re-analyzed a system involving eight hosts fromJapan, in which host phylogeny explained 26% and 9% of the variation in fungal richnessand community composition, respectively. [Correction added after online publication 21 May2013: in the preceding sentence the values 9% and 26% have been transposed. Phylogenetic eigenvectors that differentially account for clades and terminal taxa across thephylogeny revealed stronger host effects than did the treatment of host species as categoricalor dummy variables in multiregression models, and in comparison with methods such as Manteltest and its analogs. Our results indicate the usefulness of the eigenvector method for thequantification of the host phylogeny effect, which represents an integrated complex functionof taxonomic sampling effect and phylogenetic distance per se.
机译：地理和生物分类寄主范围决定了生物营养型生物的分布。寄主的系统发生距离强烈影响病原体和寄生虫的群落组成，但对寄主对共生者群落的系统发育影响知之甚少，例如植物传粉媒介和植物菌根真菌系统。通过将系统发生特征向量整合到单变量和多变量模型中，我们确定了宿主系统发育和环境变量对当地水杨皮菌根特性和外生菌根真菌（EcM）真菌群落组成的相对贡献。宿主系统发育解释了真菌物种丰富度的75％变化和群落组成变化的20％。我们还重新分析了一个由八名来自日本的寄主组成的系​​统，其中寄主的系统发育分别解释了真菌丰富度和群落组成变化的26％和9％。 [2013年5月21日在线发布后添加了更正：在前面的句子中，值9％和26％已被转换。系统进化特征向量在进化史上有差异地反映进化枝和末端分类群，其宿主效应要强于将宿主物种作为多回归模型中的分类变量或虚拟变量，并且与Manteltest及其类似方法相比。我们的结果表明，本征向量法对宿主系统发育效应的量化是有用的，它代表了分类学采样效应和系统发育距离本身的综合功能。

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