Distinct Processes Drive Diversification in Different Clades of Gesneriaceae

Systematic Biology
Eric H Roalson, Wade R Roberts

Abstract

Using a time-calibrated phylogenetic hypothesis including 768 Gesneriaceae species (out of [Formula: see text]3300 species) and more than 29,000 aligned bases from 26 gene regions, we test Gesneriaceae for diversification rate shifts and the possible proximal drivers of these shifts: geographic distributions, growth forms, and pollination syndromes. Bayesian Analysis of Macroevolutionary Mixtures analyses found five significant rate shifts in Beslerieae, core Nematanthus, core Columneinae, core Streptocarpus, and Pacific Cyrtandra These rate shifts correspond with shifts in diversification rates, as inferred by Binary State Speciation and Extinction Model and Geographic State Speciation and Extinction model, associated with hummingbird pollination, epiphytism, unifoliate growth, and geographic area. Our results suggest that diversification processes are extremely variable across Gesneriaceae clades with different combinations of characters influencing diversification rates in different clades. Diversification patterns between New and Old World lineages show dramatic differences, suggesting that the processes of diversification in Gesneriaceae are very different in these two geographic regions.

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Citations

Apr 7, 2017·Proceedings. Biological Sciences·Martha Liliana Serrano-SerranoMathieu Perret
Jun 24, 2017·Evolution; International Journal of Organic Evolution·Laura P LagomarsinoCharles C Davis
Apr 28, 2018·American Journal of Botany·Wade R Roberts, Eric H Roalson
Jul 13, 2019·American Journal of Botany·Erandi Ramírez-AguirreFrancisco J Espinosa-García
Jan 2, 2018·Royal Society Open Science·Hermine AlexandreSimon Joly
Dec 14, 2017·Evolution; International Journal of Organic Evolution·Simon JolyJohn L Clark
Mar 21, 2020·Systematic Biology·Steven PoeJoseph Barnett
Apr 26, 2017·Applications in Plant Sciences·Martha L Serrano-SerranoNicolas Salamin
Aug 9, 2020·PhytoKeys·Zhiyou GuoXiaoguo Xiang
Oct 14, 2020·Evolution; International Journal of Organic Evolution·Oscar M VargasKathleen M Kay
Nov 5, 2020·Ecology Letters·Yichao Zeng, John J Wiens
Jan 11, 2021·Molecular Phylogenetics and Evolution·Ezgi OgutcenMathieu Perret
Apr 3, 2021·Mitochondrial DNA. Part B, Resources·Shu LiFang Wen
Jan 5, 2022·Proceedings. Biological Sciences·Xiao-Qian LiWei Wang
Jan 15, 2022·Biological Reviews of the Cambridge Philosophical Society·Kara G LeimbergerMatthew G Betts

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