The effect of polyploidy and mating system on floral size and the pollination niche in Brassicaceae
The effect of polyploidy and mating system on floral size and the pollination niche in Brassicaceae
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多倍体和交配系统对十字花科花大小和授粉生态位的影响
DOI：
10.1086/727826
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发表时间：
2023
影响因子：
2.3
通讯作者：
Ashman, Tia-Lynn
中科院分区：
文献类型：
--
作者：
Streher, Nathália Susin;Budinsky, Trezalka;Halabi, Keren;Mayrose, Itay;Ashman, Tia-Lynn
研究的前提。 多倍体是开花植物的一个主要进化过程，预计会影响花的性状，这可能会对授粉相互作用产生连锁效应，但这可能取决于自交倾向。在标本馆标本的新应用中，我们评估了多倍体和交配系统对40个十字花科植物的花性状和授粉生态位的影响。方法. 我们结合关于交配系统(自交或自交不亲和)的数据和推断的倍性水平(多倍体或二倍体)，并根据柱头捕捉到的异种花粉形态种类的频率和丰富度，利用系统发育控制分析来研究它们对花性状(大小和形状)以及授粉通用度的影响。透视结果： 花的大小(但不是形状)取决于倍性和交配系统之间的相互作用。自交不亲和多倍体的花朵比自交不亲和的二倍体大，但自交不亲和的差异不大。传粉生态位的广度(泛化程度)不受倍性的影响，但只受交配制度的影响较大。自交不亲和的物种比自交不亲和的物种具有更多的柱头异种花粉和更高的异种花粉形态种类丰富度，无论其倍性如何。结论 我们的结果表明，交配系统调节了倍性对与授粉共性相关的形态特征的影响，但作为授粉共性的替代指标捕获的异种花粉的反应更具变异性。
Premise of research. Polyploidy, a major evolutionary process in flowering plants, is expected to impact floral traits, which can have cascading effects on pollination interactions, but this may depend on selfing propensity. In a novel use of herbarium specimens, we assessed the effects of polyploidy and mating system on floral traits and the pollination niche of 40 Brassicaceae species.Methodology. We combined data on mating system (self-compatible or self-incompatible) with inferred ploidy level (polyploid or diploid) and used phylogenetically controlled analyses to investigate their influence on floral traits (size and shape) and the degree of pollination generalism based on the frequency and the richness of heterospecific pollen morphospecies captured by stigmas.Pivotal results. Flower size (but not shape) depended on the interaction between ploidy and mating system. Self-incompatible polyploid species had larger flowers than self-incompatible diploids, but there was no difference for self-compatible species. The breadth of pollination niche (degree of generalism) was not affected by ploidy but was rather strongly affected by mating system only. Self-incompatible species had more stigmas with heterospecific pollen and higher heterospecific pollen morphospecies richness per stigma than self-compatible species, regardless of their ploidy.Conclusions. Our results demonstrate that mating system moderated the influence of ploidy on morphological features associated with pollination generalism but that response in terms of heterospecific pollen captured as a proxy of pollination generalism was more variable.
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影响因子：
3
作者：
Ashman, Tia-Lynn;Arceo-Gomez, Gerardo
通讯作者：
Arceo-Gomez, Gerardo
影响因子：
8.8
作者：
Baniaga, Anthony E.;Marx, Hannah E.;Barker, Michael S.
通讯作者：
Barker, Michael S.
植物杂交和多倍体会导致传粉者转移吗？
影响因子：
1.1
作者：
L. Rezende;João Suzigan;Felipe W. Amorim;A. P. Moraes
通讯作者：
A. P. Moraes
与混合热带城市种群中的二倍体相比，合法授粉者和同源四倍体豆科树的果树频率更高
影响因子：
2.8
作者：
Willams Oliveira;J. L. Silva;Oswaldo Cruz;Marcela Tomaz P Oliveira;Isabelle Fernandes de Albuquerque;L. A. Borges;A. Lopes
通讯作者：
A. Lopes
影响因子：
3.3
作者：
Raduski, Andrew R.;Haney, Elizabeth B.;Igic, Boris
通讯作者：
Igic, Boris