Phylogenomics and macroevolution of a florally diverse Neotropical plant clade.

IF 3.1 2区 环境科学与生态学 Q2 ECOLOGY
Evolution Pub Date : 2025-05-13 DOI:10.1093/evolut/qpaf099
Laymon D Ball, Ana M Bedoya, Charlotte M Taylor, Laura P Lagomarsino
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引用次数: 0

Abstract

Hillieae is a group of ∼30 florally diverse, Neotropical epiphyte species. Species richness peaks in southern Central America and taxa display bat, hawkmoth, or hummingbird pollination syndromes. A phylogenetic framework is needed to understand floral and biogeographic evolution. We used target enrichment data to infer a species tree and a Bayesian time-calibrated tree including ∼83% of the species in the group. We inferred ancestral biogeography and pollination syndromes, described species realized bioclimatic niches via a principal component analysis, and estimated significant niche shifts using Ornstein-Uhlenbeck models to understand how different abiotic and biotic variables have shaped Hillieae evolution. We estimated that Hillieae originated in southern Central America 19 Ma and that hawkmoth pollination is the ancestral character state. Multiple independent shifts in pollination syndrome, biogeographic distribution, and realized bioclimatic niche have occurred, though bioclimatic niche is largely conserved. Using generalized linear models, we identify two interactions-between species' biogeographic ranges and pollination syndromes, and between phylogenetic covariance and pollination syndromes-that additively affect the degree of bioclimatic niche overlap between species. Regional variation in pollination syndrome diversity and patterns of species bioclimatic niche overlap indicate a link between biogeography and species ecology in driving Hillieae diversification and syndrome evolution.

植物多样性新热带植物枝的系统基因组学和宏观进化。
Hillieae是一组大约30种花卉多样性的新热带附生植物。物种丰富度高峰在中美洲南部和分类群显示蝙蝠,天蛾,或蜂鸟授粉综合征。需要一个系统发育的框架来理解植物和生物地理的进化。我们使用目标富集数据来推断物种树和贝叶斯时间校准树,包括该组中约83%的物种。我们推断了祖先的生物地理和授粉综合征,通过主成分分析描述了物种实现的生物气候生态位,并使用Ornstein-Uhlenbeck模型估计了显著的生态位变化,以了解不同的非生物和生物变量如何影响希利亚的进化。我们估计希利亚科起源于19世纪的中美洲南部,以飞蛾授粉为祖先特征状态。尽管生物气候生态位在很大程度上是保守的,但在授粉综合征、生物地理分布和已实现的生物气候生态位方面发生了多次独立的转移。利用广义线性模型,我们确定了两种相互作用——物种的生物地理范围和传粉综合征之间的相互作用,以及系统发育协方差和传粉综合征之间的相互作用——这两种相互作用叠加影响物种之间生物气候生态位重叠的程度。传粉综合征多样性的区域差异和物种生物气候生态位重叠模式表明,生物地理和物种生态在推动花粉科物种多样化和综合征进化过程中存在联系。
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来源期刊
Evolution
Evolution 环境科学-进化生物学
CiteScore
5.00
自引率
9.10%
发文量
0
审稿时长
3-6 weeks
期刊介绍: Evolution, published for the Society for the Study of Evolution, is the premier publication devoted to the study of organic evolution and the integration of the various fields of science concerned with evolution. The journal presents significant and original results that extend our understanding of evolutionary phenomena and processes.
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