TOWARD A PREDICTIVE UNDERSTANDING OF THE FITNESS COSTS OF HETEROSPECIFIC POLLEN RECEIPT AND ITS IMPORTANCE IN CO-FLOWERING COMMUNITIES
TOWARD A PREDICTIVE UNDERSTANDING OF THE FITNESS COSTS OF HETEROSPECIFIC POLLEN RECEIPT AND ITS IMPORTANCE IN CO-FLOWERING COMMUNITIES
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DOI：
10.3732/ajb.1200496
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发表时间：
2013-06-01
影响因子：
3
通讯作者：
Arceo-Gomez, Gerardo
中科院分区：
文献类型：
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作者：
Ashman, Tia-Lynn;Arceo-Gomez, Gerardo
研究前提：虽然我们对共花植物如何通过传粉者觅食相互作用有了很好的了解，但我们仍然对植物如何通过异种花粉(HP)接收相互作用知之甚少。为了填补这一空白，我们试图阐明惠普接受的程度，并定量评估惠普接受的适合性后果。为了更好地理解传粉者在自然群落中共享传粉者的潜在后果，我们考虑了可以调节HP接收适合度成本的植物性状。方法：我们调查了发生Hp接收的文献，并评估了标准Hp处理的适合度影响的变异。我们开发了一个概念框架来理解HP接收的适合度结果的差异。关键结果：我们找到了HP接收及其成本变化的证据。我们的框架预测，某些特征(自交不亲和、小、高度开口化或化感作用的花粉)将导致有害的HP捐赠者，而其他特征(自交亲和性、小或湿柱头、短花柱)将导致脆弱的HP受体。我们还预测，随着供体和受体之间系统发育距离的减小，HP接收的不利影响将会增加。结论：我们的框架可以指导迫切需要的额外工作，以便我们可以评估是否以及哪些植物性状导致了HP接收效果的差异。这将是朝着预测自然群落中HP感染的后果迈出的一步，并最终改变我们对授粉后相互作用在花卉性状进化和传粉者共享中的作用的理解。
Premise of the study: While we have a good understanding of how co-flowering plants interact via pollinator foraging, we still know very little about how plants interact via heterospecific pollen (HP) receipt. To fill this gap, we sought to illuminate the extent of HP receipt and quantitatively evaluate the fitness consequences of HP receipt. We consider plant traits that could mediate the fitness costs of HP receipt in an effort to better understand the potential consequences of pollinator sharing in natural communities.Methods: We survey the literature for occurrence of HP receipt and assess variation in the fitness effects of a standard HP treatment. We develop a conceptual framework for understanding variation in fitness consequences of HP receipt.Key results: We find evidence for variation in HP receipt and its costs. Our framework predicts that certain traits (self-incompatibility, small, highly aperaturate or allelopathic pollen) will lead to detrimental HP donors, whereas others (self-compatibility, small or wet stigmas, short styles) will lead to vulnerable HP recipients. We also predict that detrimental effects of HP receipt will increase with decreasing phylogenetic distance between donor and recipient.Conclusions: Our framework can guide much needed additional work so that we can evaluate whether and which plant traits contribute to the variation in the effects of HP receipt. This will be a step toward predicting the consequences of HP receipt in natural communities, and ultimately transform our understanding of the role of postpollination interactions in floral trait evolution and pollinator sharing.