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Hybridization, ecogeographical displacement and the emergence of new lineages - A genotyping-by-sequencing and ecological niche and species distribution modelling study of Sempervivum tectorum L. (Houseleek).
Journal of Evolutionary Biology ( IF 2.1 ) Pub Date : 2021-03-25 , DOI: 10.1111/jeb.13784
Armin G Fabritzek 1 , Eva Maria Griebeler 1 , Joachim W Kadereit 1
Affiliation  

Ecogeographical displacement of homoploid hybrid lineages from their parents is well documented and considered an important mechanism to achieve reproductive isolation. In this study, we investigated the origin of the flowering plant species Sempervivum tectorum in the Massif Central (France) through homoploid hybridization between lineages of the species from the Rhine Gorge area (Germany) and the Pyrenees (France). We used genotyping-by-sequencing genetic data as evidence for the hybrid origin of the Massif Central lineage, and WorldClim climatic data and soil pH and soil temperature data collected by us for ecological niche and species distribution modelling. We could show that the Massif Central lineage shows hybrid admixture and that the niche of this lineage is significantly different from those of the parental lineages. In comparison with the parental niches, different variables of the niche of the hybrid lineage are intermediate, parental-combined or extreme. The different niche of the Massif Central populations thus can plausibly be interpreted as hybridization-derived. Our species distribution modelling for the Last Glacial Maximum and Mid-Holocene showed that the potential distribution of the hybrid lineage at the likely time of its origin in the Quaternary possibly was parapatric in relation to the largely sympatric distributions of the parental lineages. We hypothesize that reproductive isolation of the hybrid lineage from the parental lineages resulted from the segregation of distribution ranges by a differential response of the three lineages to a warming climate.

中文翻译:

杂交、生态地理位移和新谱系的出现 - Sempervivum tectorum L. (Houseleek) 的基因分型和生态位和物种分布模型研究。

同倍体杂种谱系从其亲本的生态地理位移已得到充分证明,并被认为是实现生殖隔离的重要机制。在这项研究中,我们通过来自莱茵河峡谷地区(德国)和比利牛斯山脉(法国)的物种谱系之间的同倍体杂交,调查了中央地块(法国)开花植物物种 Sempervivum tectorum 的起源。我们使用基因分型测序遗传数据作为地块中央谱系杂交起源的证据,以及我们为生态位和物种分布建模收集的 WorldClim 气候数据和土壤 pH 值和土壤温度数据。我们可以证明 Massif Central 谱系显示混合混合,并且该谱系的生态位与亲本谱系的生态位显着不同。与亲本生态位相比,杂种世系生态位的不同变量是中间的、亲本组合的或极端的。因此,地块中央种群的不同生态位可以合理地解释为杂交衍生的。我们对末次盛冰期和中全新世的物种分布模型表明,杂种谱系在第四纪起源的可能时间的潜在分布可能与亲本谱系的大部分同域分布有关。我们假设杂种谱系与亲本谱系的生殖隔离是由于三个谱系对气候变暖的不同反应导致分布范围的分离。父母结合或极端。因此,地块中央种群的不同生态位可以合理地解释为杂交衍生的。我们对末次盛冰期和中全新世的物种分布模型表明,杂种谱系在第四纪起源的可能时间的潜在分布可能与亲本谱系的大部分同域分布有关。我们假设杂种谱系与亲本谱系的生殖隔离是由于三个谱系对气候变暖的不同反应导致分布范围的分离。父母结合或极端。因此,地块中央种群的不同生态位可以合理地解释为杂交衍生的。我们对末次盛冰期和中全新世的物种分布模型表明,杂种谱系在第四纪起源的可能时间的潜在分布可能与亲本谱系的大部分同域分布有关。我们假设杂种谱系与亲本谱系的生殖隔离是由于三个谱系对气候变暖的不同反应导致分布范围的分离。我们对末次盛冰期和中全新世的物种分布模型表明,杂种谱系在第四纪起源的可能时间的潜在分布可能与亲本谱系的大部分同域分布有关。我们假设杂种谱系与亲本谱系的生殖隔离是由于三个谱系对气候变暖的不同反应导致分布范围的分离。我们对末次盛冰期和中全新世的物种分布模型表明,杂种谱系在第四纪起源的可能时间的潜在分布可能与亲本谱系的大部分同域分布有关。我们假设杂种谱系与亲本谱系的生殖隔离是由于三个谱系对气候变暖的不同反应导致分布范围的分离。
更新日期:2021-03-13
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