Pleiotropy and the evolution of floral integration
Pleiotropy and the evolution of floral integration
复制标题
多效性和花整合的进化
DOI：
10.1111/nph.13583
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发表时间：
2016
期刊：
影响因子：
9.4
通讯作者：
Smith, Stacey D.
中科院分区：
文献类型：
--
作者：
Smith, Stacey D.
花的性状往往表现出相关的变化，在物种内和跨物种。对这种花整合模式的一种解释是，花表型的不同元素由相同的基因控制，即遗传结构是多效性的。最近的研究表明，一系列模式系统的多效性是共同的基因座负责花分化。此外，在这些基因座的等位基因取代的影响是压倒性的一致的方向的分歧，这表明多效性的影响是适应性的。分子遗传学研究已经揭示了其中一些效应的功能基础，尽管大多数数量性状位点（QTL）负责花的差异的分子，生化和发育机制仍有待发现。详细了解多效性突变的性质及其表型后果对于建模性状变异的遗传结构如何影响花进化的克里思和轨迹至关重要。目录 摘要80 I.一、导言. 80 二.花特征结构中多效性的程度和性质81 三.多效性的进化83 四.多效性作为表型进化的障碍或促进因素83 鸣谢84 参考文献84
Floral traits often show correlated variation, both within and across species. One explanation for this pattern of floral integration is that different elements of floral phenotypes are controlled by the same genes, that is, that the genetic architecture is pleiotropic. Recent studies from a range of model systems suggest that the pleiotropy is common among the loci responsible for floral divergence. Moreover, the effects of allelic substitutions at these loci are overwhelmingly aligned with direction of divergence, suggesting that the nature of the pleiotropic effects was adaptive. Molecular genetic studies have revealed the functional basis for some of these effects, although much remains to be discovered with respect to the molecular, biochemical and developmental mechanisms underlying most quantitative trait loci (QTL) responsible for floral differences. Developing a detailed understanding of the nature of pleiotropic mutations and their phenotypic consequences is crucial for modeling how the genetic architecture of trait variation influences the tempo and trajectory of floral evolution.Contents Summary 80 I. Introduction 80 II. Extent and nature of pleiotropy in floral trait architecture 81 III. The evolution of pleiotropy 83 IV. Pleiotropy as an impediment or facilitator of phenotypic evolution 83 Acknowledgements 84 References 84