The origin and speciation of orchids

 

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Authors: Pérez Escobar, Oscar Alejandro, Bogarín Chaves, Diego Gerardo, Przelomska, Natalia A.S., Ackerman, James D., Balbuena, Juan A., Bellot, Sidonie, Bühlmann, Roland P., Cabrera, Betsaida, Aguilar Cano, José, Charitonidou, Martha, Chomicki, Guillaume, Clements, Mark A., Cribb, Phillip, Fernández Campos, Melania, Flanagan, Nicola S., Gravendeel, Barbara, Hágsater, Eric, Halley, John M., Hu, Ai-Qun, Jaramillo Muñoz, Carlos Alberto, Mauad, Anna Victoria, Maurin, Olivier, Müntz, Robert, Leitch, Ilia J., Li, Lan, Negrão, Raquel, Oses Salas, Lizbeth Melissa, Phillips, Charlotte, Rincón González, Milton, Salazar Chávez, Gerardo Adolfo, Simpson, Lalita, Smidt, Eric, Solano Gómez, Rodolfo, Parra Sánchez, Edicson, Tremblay, Raymond L., van den Berg, Cassio, Villanueva Tamayo, Boris Stefan, Zuluaga Trochez, Alejandro, Zuntini, Alexandre, Chase, Mark W., Fay, Michael, Condamine, Fabien L., Forest, Félix, Nargar, Katharina, Renner, Susanne S., Baker, William J., Antonelli, Alexandre
Format: artículo original
Publication Date:2024
Description:Orchids constitute one of the most spectacular radiations of flowering plants. However, their origin, spread across the globe, and hotspots of speciation remain uncertain due to the lack of an up-to-date phylogeographic analysis. We present a new Orchidaceae phylogeny based on combined high-throughput and Sanger sequencing data, covering all five subfamilies, 17/22 tribes, 40/49 subtribes, 285/736genera, and c. 7% (1921) of the 29 524 accepted species, and use it to infer geographic range evolution, diversity, and speciation patterns by adding curated geographical distributions from the World Checklist of Vascular Plants. The orchids’ most recent common ancestor is inferred to have lived in Late CretaceousLaurasia. The modern range of Apostasioideae, which comprises two genera with 16 species from India to northern Australia, is interpreted as relictual, similar to that of numerous other groups that went extinct at higher latitudes following the global climate cooling during theOligocene. Despite their ancient origin, modern orchid species diversity mainly originated over the last 5 Ma, with the highest speciation rates in Panama and Costa Rica. These results alter our understanding of the geographic origin of orchids, previously pro-posed as Australian, and pinpoint Central America as a region of recent, explosive speciation
Country:Kérwá
Institution:Universidad de Costa Rica
Repositorio:Kérwá
Language:Inglés
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/91165
Online Access:https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19580
https://hdl.handle.net/10669/91165
Keyword:ORCHIDS
ORIGIN
HISTORY
SPECIES
NEOTROPICS
MACROEVOLUTION

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