核系统发育和质体系统发育之间的不一致性挑战了欧洲高山系统龙胆多样化相关性的鉴定

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Adrien Favre, Juraj Paule, Jana Ebersbach
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引用次数: 7

摘要

山脉是巨大生物多样性的蓄水池,在整个进化时期,一系列因素共同作用,培育了巨大的生物多样性。这些因素可能是气候、地质或生物因素,但它们在时间上结合产生多样性的方式仍然未知。在这里,我们研究了这些因素作为欧洲高山系统龙胆三个密切相关部分多样化的相关因素。基于系统发育方法,结合分歧年代测定和祖先状态重建,我们试图确定基石偏好、染色体数量和相对基因组大小估计的作用,以及随时间的形态学特征。我们还使用一组精心策划的发生记录调查了现存的气候偏好,这些记录是为了获得更高的精度而单独选择的,并量化了每个部分的气候生态位进化率。我们发现,许多系统发育不一致破坏了多样化相关因素的识别,但无论所考虑的拓扑结构如何,许多模式都会持续存在。所有研究的相关性都可能有助于龙胆在欧洲的多样化,然而,它们各自的重要性随着时间和分支的不同而不同。在整个欧洲龙胆进化过程中(渐新世至今),染色体变异和气候偏好的差异似乎与多样化有关,而在最近的多样化过程中(上新世),基岩偏好的变化似乎更具决定性。总的来说,气候、地质和生物属性之间的复杂相互作用似乎支持了龙胆在欧洲山区的多样化,基于系统发育和其他证据,杂交可能也支持了这一点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Incongruences between nuclear and plastid phylogenies challenge the identification of correlates of diversification in Gentiana in the European Alpine System

Mountains are reservoirs for a tremendous biodiversity which was fostered by a suite of factors acting in concert throughout evolutionary times. These factors can be climatic, geological, or biotic, but the way they combine through time to generate diversity remains unknown. Here, we investigate these factors as correlates of diversification of three closely related sections of Gentiana in the European Alpine System. Based upon phylogenetic approaches coupled with divergence dating and ancestral state reconstructions, we attempted to identify the role of bedrock preferences, chromosome numbers coupled with relative genome sizes estimates, as well as morphological features through time. We also investigated extant climatic preferences using a heavily curated set of occurrence records individually selected for superior precision, and quantified rates of climatic niche evolution in each section. We found that a number of phylogenetic incongruences derail the identification of correlates of diversification, yet a number of patterns persist regardless of the topology considered. All the studied correlates are likely to have contributed to the diversification of Gentiana in Europe, however, their respective importance varied through time and across clades. Chromosomal variation and divergence of climatic preferences appear to correlate with diversification throughout the evolution of European Gentiana (Oligocene to present), whereas shifts in bedrock preferences appear to have been more defining during recent diversification (Pliocene). Overall, a complex interaction among climatic, geological and biotic attributes appear to have supported the diversification of Gentiana across the mountains of Europe, which based upon phylogenetic as well as other evidence, was probably also bolstered by hybridization.

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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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