Diversification rates in Antirrhineae (Plantaginaceae): The contribution of range shifts and pollination modes

Ogutcen, Ezgi; Theriault, Jolan; King, Daniel B.; Vamosi, Jana C.

doi:10.1016/j.ppees.2017.04.001

Cited by 8 publications

(7 citation statements)

References 85 publications

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“…(); misplacement of Gambelia speciosa and Schweinfurthia pterosperma , and misnaming of Gambelia juncea as Galvezia juncea in Ogutcen & Vamosi () and Ogutcen et al . ()) (see also Guzmán et al ., ).…”

Section: Discussionmentioning

confidence: 86%

Macroevolutionary dynamics of nectar spurs, a key evolutionary innovation

et al. 2019

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Summary Floral nectar spurs are widely considered a key innovation promoting diversification in angiosperms by means of pollinator shifts. We investigated the macroevolutionary dynamics of nectar spurs in the tribe Antirrhineae (Plantaginaceae), which contains 29 genera and 300–400 species (70–80% spurred). The effect of nectar spurs on diversification was tested, with special focus on Linaria, the genus with the highest number of species. We generated the most comprehensive phylogeny of Antirrhineae to date and reconstructed the evolution of nectar spurs. Diversification rate heterogeneity was investigated using trait‐dependent and trait‐independent methods, and accounting for taxonomic uncertainty. The association between changes in spur length and speciation was examined within Linaria using model testing and ancestral state reconstructions. We inferred four independent acquisitions of nectar spurs. Diversification analyses revealed that nectar spurs are loosely associated with increased diversification rates. Detected rate shifts were delayed by 5–15 Myr with respect to the acquisition of the trait. Active evolution of spur length, fitting a speciational model, was inferred in Linaria, which is consistent with a scenario of pollinator shifts driving diversification. Nectar spurs played a role in diversification of the Antirrhineae, but diversification dynamics can only be fully explained by the complex interaction of multiple biotic and abiotic factors.

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Section: Discussionmentioning

confidence: 86%

Macroevolutionary dynamics of nectar spurs, a key evolutionary innovation

et al. 2019

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“…Evolutionary models of reproductive isolation and adaptation to novel pollinators seem to explain species diversity in some small to modest-sized clades (e.g. Smith et al , 2006; Wilson et al , 2006; Whittall and Hodges, 2007; Ogutcen et al , 2017 – but see Armbruster and Muchhala, 2009, for a different perspective). In other cases, such as the family Asteraceae, an evolutionary trend from specialist- to generalist-pollination systems within a clade has been suggested (Torres and Galetto, 2002).…”

Section: Introductionmentioning

confidence: 99%

The diversity and evolution of pollination systems in large plant clades: Apocynaceae as a case study

et al. 2018

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Within Apocynaceae, interactions with pollinators are highly structured both phylogenetically and biogeographically. Variation in transition rates between pollination systems suggest constraints on their evolution, whereas regional differences point to environmental effects such as filtering of certain pollinators from habitats. This is the most extensive analysis of its type so far attempted and gives important insights into the diversity and evolution of pollination systems in large clades.

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“…Several colonization routes to the New World were proposed, including two terrestrial ones through land bridges at different times in the Cenozoic (the Thulean route and the Beringian route) or, alternatively, three independent events of long-distance colonization (Vargas et al, 2004). Later on, with the support of a genus-level, time-calibrated phylogeny and specific biogeographic analyses, Vargas et al (2014) confirmed the Old World as the ancestral range and proposed four independent events of long-distance colonization from the Old World to the New World during the Miocene, tracing biogeographical congruence of four clades and ruling out vicariance scenarios (see also Ogutcen, Theriault, King, & Vamosi, 2017;Ogutcen & Vamosi, 2016). Additional biogeographic hypotheses have been F I G U R E 1 (a-c) Time-calibrated phylogeny of Antirrhineae and ancestral range estimation under the DEC model obtained in RASP.…”

Section: Introductionmentioning

confidence: 89%

Out of the Mediterranean Region: Worldwide biogeography of snapdragons and relatives (tribe Antirrhineae, Plantaginaceae)

Gorospe

Monjas

Fernández‐Mazuecos

2020

Journal of Biogeography

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Aim: The tribe Antirrhineae, including snapdragons, toadflaxes and relatives, is widely distributed across the Northern Hemisphere and the Neotropics. It displays an uneven distribution of diversity, with more than 50% of species and subspecies in the Mediterranean Region. Here we conducted the first detailed, worldwide biogeographic analysis of the Antirrhineae and tested two alternative hypotheses (time-forspeciation versus diversification rate differences) to explain the uneven distribution of diversity. Location: Worldwide, with a focus on the Mediterranean Region. Taxon: Tribe Antirrhineae (Plantaginaceae). Methods: A phylogenetic biogeographic approach was taken, accounting for area connections through time. Ancestral ranges, dispersal events, speciation and lineage accumulation within areas were estimated. Diversification rates for taxa present and absent in the Mediterranean Region were compared, accounting for the effect of a floral key innovation (nectar spur). Results: A proto-Mediterranean origin in the Late Eocene was estimated, and the Mediterranean Region stood out as the main centre for speciation and dispersal. Congruent patterns of long-distance dispersal from the Mediterranean Region to North America were recovered for at least two amphiatlantic clades. A significant floristic exchange between the Mediterranean and southwestern Asia was detected. We found no evidence of different diversification rates between lineages inside and outside the Mediterranean Region. Main conclusions: The Mediterranean Region played a key role in the origin of the current distribution of the Antirrhineae. However, the higher species richness found in this region appears to be the result of a time-for-speciation effect rather than that of increased diversification rates. The establishment of current Mediterranean climates in the Northern Hemisphere appears to have contributed to the recent diversification of the group, in combination with colonization of adjacent regions with arid and semi-arid climates.

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Diversification rates in Antirrhineae (Plantaginaceae): The contribution of range shifts and pollination modes

Cited by 8 publications

References 85 publications

Macroevolutionary dynamics of nectar spurs, a key evolutionary innovation

Macroevolutionary dynamics of nectar spurs, a key evolutionary innovation

The diversity and evolution of pollination systems in large plant clades: Apocynaceae as a case study

Out of the Mediterranean Region: Worldwide biogeography of snapdragons and relatives (tribe Antirrhineae, Plantaginaceae)

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