Plant reproductive systems and evolution during biological invasion
Plant reproductive systems and evolution during biological invasion
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DOI：
10.1111/j.1365-294x.2007.03503.x
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发表时间：
2008-01-01
影响因子：
4.9
通讯作者：
Eckert, Christopher G.
中科院分区：
文献类型：
--
作者：
Barrett, Spencer C. H.;Colautti, Robert I.;Eckert, Christopher G.
最近的生物入侵为研究当代时间尺度上的微进化提供了机会。当地适应的克里思和范围将由自然选择的强度以及种群内遗传变异的数量和种类决定。在显花植物中，遗传多样性受到生殖系统和与移民历史和范围扩张相关的随机力之间的相互作用的强烈影响。在这里，我们探讨的意义，生殖系统的多样性，当代植物入侵过程中的进化。我们特别关注生殖模式如何影响长距离殖民的遗传后果，并确定入侵过程中适应性反应的可能性。在许多克隆入侵者中，强烈的奠基者效应和对有性繁殖的限制限制了当地适应的机会。相反，生活史性状的适应性变化应该是远系繁殖和近亲繁殖物种的普遍期望。我们提供的证据表明，进化修改生殖系统促进入侵种群的殖民能力和生殖时间是一个重要的目标选择范围扩大。知识的可能性和速度，当地的适应进化的入侵植物将是特别重要的管理实践时，进化的变化增强生态机会和入侵蔓延。
Recent biological invasions provide opportunities to investigate microevolution during contemporary timescales. The tempo and scope of local adaptation will be determined by the intensity of natural selection and the amounts and kinds of genetic variation within populations. In flowering plants, genetic diversity is strongly affected by interactions between reproductive systems and stochastic forces associated with immigration history and range expansion. Here, we explore the significance of reproductive system diversity for contemporary evolution during plant invasion. We focus in particular on how reproductive modes influence the genetic consequences of long-distance colonization and determine the likelihood of adaptive responses during invasion. In many clonal invaders, strong founder effects and restrictions on sexual reproduction limit opportunities for local adaptation. In contrast, adaptive changes to life-history traits should be a general expectation in both outbreeding and inbreeding species. We provide evidence that evolutionary modifications to reproductive systems promote the colonizing ability of invading populations and that reproductive timing is an important target of selection during range expansion. Knowledge of the likelihood and speed at which local adaptation evolves in invasive plants will be particularly important for management practices when evolutionary changes enhance ecological opportunities and invasive spread.