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Whole-Genome Duplication and Plant Macroevolution
First author: James W. Clark; Affiliations: University of Bristol (布里斯托大学): Bristol, UK
Corresponding author: Philip C.J. Donoghue
Whole-genome duplication (WGD) is characteristic of almost all fundamental lineages of land plants. Unfortunately, the timings of WGD events are loosely constrained and hypotheses of evolutionary consequence are poorly formulated, making them difficult to test. Using examples from across the plant kingdom, we show that estimates of timing can be improved through the application of molecular clock methodology to multigene datasets. Further, we show that phenotypic change can be quantified in morphospaces (形态空间学) and that relative phenotypic disparity can be compared in the light of WGD. Together, these approaches facilitate tests of hypotheses on the role of WGD in plant evolution, underscoring the potential of plants as a model system for investigating the role WGD in macroevolution.
全基因组复制事件是所有陆地植物基本谱系共同具有的特性。不幸的是,WGD发生的时间限制比较宽松,并且其在演化上的影响也少有公式化的评估。利用植物的一些例子,本文显示可以通过对多基因数据集应用分子钟的方法来提升WGD发生时间的估计。此外,本文显示形态变异可以通过形态空间学来定量,这样就可以从WGD的角度对于植物相对的形态差异进行比较。综上,这些方法将有利于研究者测试WGD对于植物演化的影响,强调了植物可以作为一个模型系统用于研究WGD在宏观演化中的作用。
通讯:Philip Donoghue (http://www.bris.ac.uk/earthsciences/people/philip-c-donoghue/index.html)
个人简介:1992年,莱斯特大学,地质学学士;1993年,谢菲尔德大学,孢粉学硕士;1997年,莱斯特大学,地质学博士。
研究方向:生物演化。
doi: https://doi.org/10.1016/j.tplants.2018.07.006
Journal: Trends in Plant Science
Published online: 16 August, 2018
(P.S. 原文下载:链接:https://pan.baidu.com/s/1qFiSsqwlF_7JjmGMbedfhQ 密码:dmu6)
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