Using DNA Sequence Diversity to Test for Selection in Silene
Using DNA Sequence Diversity to Test for Selection in Silene
复制标题
利用 DNA 序列多样性测试 Silene 中的选择
DOI：
10.1086/656429
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发表时间：
2010
影响因子：
2.3
通讯作者：
Charlesworth D
中科院分区：
文献类型：
--
作者：
Charlesworth D
利用物种内的DNA序列多样性和相关物种之间的差异，可以在非模式物种（包括植物的自然种群）中检验自然选择的作用。我们提出了一些感兴趣的问题，在genusSilene，其中的单性的进化已经发生了多次和相关的物种适合用作外群在这样的比较。在雌雄异株的物种宽叶蝇子草中，不同性别的进化提出了许多关于选择的问题，包括最近对Y或其他染色体进行选择性扫描的可能性。如果最近的选择性扫描没有发生在Y染色体上，人们可能能够得出结论，Y连锁基因的低序列多样性可能是由于Y染色体的遗传变性过程。在雌雄异株的物种中，检验性选择是否发生也很有趣（这是一个在植物中难以研究的问题，它可能影响X和Y染色体以及常染色体上基因的有效群体大小，在选择测试时必须考虑到这一点），以及授粉过程中是否发生选择。宽叶蝇子草也可用于测试其他蝇子草属物种的选择，我们概述了在线粒体基因组中与雌株异株物种Silene vulgaris中雌性存在相关的长期平衡选择的测试。我们的选择测试结果是初步的，并且有与结论相关的重要警告。因此，我们讨论了一些主要的困难和数据的种类，这些数据应该有助于将来改进结果。
It is beginning to be possible to test for the action of natural selection in nonmodel species, including in natural populations of plants, using DNA sequence diversity within species and divergence between related species. We suggest some questions of interest in plants in the genusSilene, where the evolution of unisexuals has occurred multiple times and related species suitable for use as outgroups in such comparisons are available. In the dioecious speciesSilene latifolia, the evolution of separate sexes raises many questions about selection, including the possibility of recent selective sweeps on the Y or other chromosomes. If recent selective sweeps have not occurred on the Y chromosome, one might be able to conclude that the low sequence diversity that is observed for Y-linked genes may be due to processes involved in genetic degeneration of Y chromosomes. In a dioecious species, it is also interesting to test whether sexual selection occurs (a question that has been difficult to study in plants and which could affect the effective population sizes of genes on the X and Y chromosomes and on the autosomes, which must be taken into account when testing for selection), and also whether selection occurs during pollination.Silene latifoliais also useful for testing selection in otherSilenespecies, and we outline tests for long-term balancing selection in the mitochondrial genome associated with the presence of females in the gynodioecious speciesSilene vulgaris. The results of our tests for selection are preliminary, and there are important caveats associated with the conclusions. We therefore include discussion of some of the main difficulties and the kinds of data that should be helpful in refining the results in the future.
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影响因子：
3.3
作者：
M. Mráčková;Michael Nicolas;R. Hobza;I. Negrutiu;F. Monéger;A. Widmer;B. Vyskot;B. Janoušek
通讯作者：
B. Janoušek
DOI：
10.1073/pnas.84.24.9054
发表时间：
1987-12-01
影响因子：
11.1
作者：
WOLFE, KH;LI, WH;SHARP, PM
通讯作者：
SHARP, PM
阔叶草性别比和性别二态性的进化动态：一、环境影响
DOI：
--
发表时间：
1994
期刊：
影响因子：
--
作者：
E. E. Lyons;D. Miller;T. Meagher
通讯作者：
T. Meagher
DOI：
10.1098/rspb.1996.0062
发表时间：
1996-04-22
影响因子：
4.7
作者：
Desfeux, C;Maurice, S;Gouyon, PH
通讯作者：
Gouyon, PH
影响因子：
10.7
作者：
R. Hudson;D. Boos;N. Kaplan
通讯作者：
R. Hudson;D. Boos;N. Kaplan