Testing models for the leaf economics spectrum with leaf and whole-plant traits in Arabidopsis thaliana
Testing models for the leaf economics spectrum with leaf and whole-plant traits in Arabidopsis thaliana
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DOI：
10.1093/aobpla/plv049
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发表时间：
2015-01-01
期刊：
影响因子：
2.9
通讯作者：
Vile, Denis
中科院分区：
文献类型：
--
作者：
Blonder, Benjamin;Vasseur, Francois;Vile, Denis
叶经济学谱（LES）描述了决定维管植物资源通量的多个功能叶性状之间的密切关系。已经提出了五个模型来解释这些模式：两个基于结构分配的模式，两个脉序网络和一个资源分配到细胞壁和细胞内容。在这里，我们测试这些模型使用的数据叶和整株功能性状。我们使用结构方程模型应用于多个生态型，重组自交系，近等基因系和拟南芥表达LES性状变异的血管图案突变体。我们发现，在多个功能性状的广泛变化概括了LES在整个工厂规模。Wright et al.（2004）模型和Blonder et al.（2013）脉序网络模型不能被数据拒绝，而两个简单模型和Shipley et al.（2006）分配模型被拒绝。脉络网络仍然是LES起源的关键假设，但也不能排除更简单的解释。
The leaf economics spectrum (LES) describes strong relationships between multiple functional leaf traits that determine resource fluxes in vascular plants. Five models have been proposed to explain these patterns: two based on patterns of structural allocation, two on venation networks and one on resource allocation to cell walls and cell contents. Here we test these models using data for leaf and whole-plant functional traits. We use structural equation modelling applied to multiple ecotypes, recombinant inbred lines, near isogenic lines and vascular patterning mutants of Arabidopsis thaliana that express LES trait variation. We show that a wide variation in multiple functional traits recapitulates the LES at the whole-plant scale. The Wright et al. (2004) model and the Blonder et al. (2013) venation network model cannot be rejected by data, while two simple models and the Shipley et al. (2006) allocation model are rejected. Venation networks remain a key hypothesis for the origin of the LES, but simpler explanations also cannot be ruled out.