自交如何影响物种演化的速度和过程?

IF 6.9 2区 生物学 Q1 CELL BIOLOGY
Lucas Marie-Orleach, Sylvain Glémin, Marie K. Brandrud, Anne K. Brysting, Abel Gizaw, A. Lovisa S. Gustafsson, Loren H. Rieseberg, Christian Brochmann, Siri Birkeland
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引用次数: 0

摘要

令人惊讶的是,尽管自交会减少种群间的基因流动并影响其他关键种群遗传学参数,但人们却很少关注自交对物种形成的影响。在此,我们回顾了最近的理论研究,并汇编了杂交实验、基因组和系统发育研究的经验数据,以评估交配系统对物种演化过程的影响。根据理论预测,我们发现杂交不兼容性的积累似乎会在自交系中加速,但迄今为止,对预测的偏向低优势位点的经验支持有限。系统发育的证据很少,而且相互矛盾,包括有研究表明自交促进或阻碍物种的形成。因此,还需要进一步的研究,除了生殖障碍强度和自交率的测量方法外,还应该包括对人口历史和遗传分化的估计,作为分化时间的代表。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
How Does Selfing Affect the Pace and Process of Speciation?
Surprisingly little attention has been given to the impact of selfing on speciation, even though selfing reduces gene flow between populations and affects other key population genetics parameters. Here we review recent theoretical work and compile empirical data from crossing experiments and genomic and phylogenetic studies to assess the effect of mating systems on the speciation process. In accordance with theoretical predictions, we find that accumulation of hybrid incompatibilities seems to be accelerated in selfers, but there is so far limited empirical support for a predicted bias toward underdominant loci. Phylogenetic evidence is scarce and contradictory, including studies suggesting that selfing either promotes or hampers speciation rate. Further studies are therefore required, which in addition to measures of reproductive barrier strength and selfing rate should routinely include estimates of demographic history and genetic divergence as a proxy for divergence time.
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来源期刊
CiteScore
15.00
自引率
1.40%
发文量
56
审稿时长
3-8 weeks
期刊介绍: Cold Spring Harbor Perspectives in Biology offers a comprehensive platform in the molecular life sciences, featuring reviews that span molecular, cell, and developmental biology, genetics, neuroscience, immunology, cancer biology, and molecular pathology. This online publication provides in-depth insights into various topics, making it a valuable resource for those engaged in diverse aspects of biological research.
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