BACKGROUND To maximize photosynthetic efficiency, plants have evolved a capacity by which leaf area scales allometrically with leaf mass through interactions with the environment. However, our understanding of genetic control of this allometric relationship remains limited. RESULTS We integrated allometric scaling laws expressed at static and ontogenetic levels into genetic mapping to identify the quantitative trait loci (QTLs) that mediate how leaf area scales with leaf mass and how such leaf allometry, under the control of these QTLs, varies as a response to environment change. A major QTL detected by the static model constantly affects the allometric growth of leaf area vs. leaf mass for the common bean (Phaseolus vulgaris) in two different environments. The ontogenetic model identified this QTL plus a few other QTLs that determine developmental trajectories of leaf allometry, whose expression is contingent heavily upon the environment. CONCLUSIONS Our results gain new insight into the genetic mechanisms of how plants program their leaf morphogenesis to adapt to environmental perturbations.

中文翻译：

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普通菜豆菜豆叶片异体感的遗传控制。

背景技术为了使光合作用效率最大化，植物已经发展了一种能力，通过与环境的相互作用，叶面积与叶质量呈异速成比例缩放。但是，我们对这种异位关系的遗传控制的理解仍然有限。结果我们将在静态和个体发育水平上表达的异速生长定标定律整合到遗传图谱中，以鉴定定量性状位点（QTL），其介导叶面积与叶质量成比例，以及在这些QTL的控制下，叶异变如何响应应对环境变化。静态模型检测到的主要QTL在两种不同环境中不断影响普通豆（菜豆）的叶面积与叶质量的异形生长。本体模型识别了这个QTL，加上其他一些QTL，这些QTL决定了叶片异体形成的发展轨迹，其表达在很大程度上取决于环境。结论我们的结果获得了关于植物如何编程其叶片形态发生以适应环境扰动的遗传机制的新见解。