Reconstructing patterns of reticulate evolution UN plants
Reconstructing patterns of reticulate evolution UN plants
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DOI：
10.3732/ajb.91.10.1700
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发表时间：
2004-10-01
影响因子：
3
通讯作者：
Rieseberg, LH
中科院分区：
文献类型：
--
作者：
Linder, CR;Rieseberg, LH
直到最近，严格重建的许多杂交物种形成的事件在植物中一直是不切实际的，因为有限的数量的分子标记可用于植物系统发育重建和缺乏良好的，基于生物学的方法来推断网状（网络）事件。随着用于系统发育重建的多核标记和重建网状进化的新方法的发展，这种情况将迅速改变。这些发展将需要一个更大的纳入群体遗传学系统发育重建比以往常见的。群体遗传事件，如基因重复加上谱系排序和减数分裂和有性重组一直有可能影响系统发育的推断。对于树重建，这些问题通常是最小化通过使用单亲标记和核标记，经历快速协同进化。由于网状物种形成事件的重建需要缺乏这些特征的核标记，因此需要直接解决群体遗传学对系统发育推断的影响。目前的模型和方法，使杂交物种的检测和重建进行了讨论，重点是如何谱系排序和减数分裂和有性重组影响网络重建。建议的方法，将允许推断系统发育网络在他们的存在。
Until recently, rigorously reconstructing the many hybrid speciation events in plants has not been practical because of the limited number of molecular markers available for plant phylogenetic reconstruction and the lack of good, biologically based methods for inferring reticulation (network) events. This situation should change rapidly with the development of multiple nuclear markers for phylogenetic reconstruction and new methods for reconstructing reticulate evolution. These developments will necessitate a much greater incorporation of population genetics into phylogenetic reconstruction than has been common. Population genetic events such as gene duplication coupled with lineage sorting and meiotic and sexual recombination have always had the potential to affect phylogenetic inference. For tree reconstruction, these problems are usually minimized by using uniparental markers and nuclear markers that undergo rapid concerted evolution. Because reconstruction of reticulate speciation events will require nuclear markers that lack these characteristics, effects of population genetics on phylogenetic inference will need to be addressed directly. Current models and methods that allow hybrid speciation to be detected and reconstructed are discussed, with a focus on how lineage sorting and meiotic and sexual recombination affect network reconstruction. Approaches that would allow inference of phylogenetic networks in their presence are suggested.