TY - JOUR
T1 - The origin and speciation of orchids
AU - Pérez-Escobar, Oscar A.
AU - Bogarín, Diego
AU - Przelomska, Natalia A.S.
AU - Ackerman, James D.
AU - Balbuena, Juan A.
AU - Bellot, Sidonie
AU - Bühlmann, Roland P.
AU - Cabrera, Betsaida
AU - Cano, Jose Aguilar
AU - Charitonidou, Martha
AU - Chomicki, Guillaume
AU - Clements, Mark A.
AU - Cribb, Phillip
AU - Fernández, Melania
AU - Flanagan, Nicola S.
AU - Gravendeel, Barbara
AU - Hágsater, Eric
AU - Halley, John M.
AU - Hu, Ai Qun
AU - Jaramillo, Carlos
AU - Mauad, Anna Victoria
AU - Maurin, Olivier
AU - Müntz, Robert
AU - Leitch, Ilia J.
AU - Li, Lan
AU - Negrão, Raquel
AU - Oses, Lizbeth
AU - Phillips, Charlotte
AU - Rincon, Milton
AU - Salazar, Gerardo A.
AU - Simpson, Lalita
AU - Smidt, Eric
AU - Solano-Gomez, Rodolfo
AU - Parra-Sánchez, Edicson
AU - Tremblay, Raymond L.
AU - van den Berg, Cassio
AU - Tamayo, Boris Stefan Villanueva
AU - Zuluaga, Alejandro
AU - Zuntini, Alexandre R.
AU - Chase, Mark W.
AU - Fay, Michael F.
AU - Condamine, Fabien L.
AU - Forest, Felix
AU - Nargar, Katharina
AU - Renner, Susanne S.
AU - Baker, William J.
AU - Antonelli, Alexandre
N1 - Publisher Copyright:
© 2024 The Authors New Phytologist © 2024 New Phytologist Foundation.
PY - 2024/4
Y1 - 2024/4
N2 - 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, 285/736 genera, 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 Cretaceous Laurasia. 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 the Oligocene. 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 proposed as Australian, and pinpoint Central America as a region of recent, explosive speciation.
AB - 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, 285/736 genera, 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 Cretaceous Laurasia. 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 the Oligocene. 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 proposed as Australian, and pinpoint Central America as a region of recent, explosive speciation.
KW - Laurasia
KW - Neotropics
KW - Orchidaceae
KW - high-latitude extinction
KW - historical biogeography
KW - macroevolution
UR - http://www.scopus.com/inward/record.url?scp=85187125790&partnerID=8YFLogxK
U2 - 10.1111/nph.19580
DO - 10.1111/nph.19580
M3 - Article
C2 - 38382573
AN - SCOPUS:85187125790
SN - 0028-646X
VL - 242
SP - 700
EP - 716
JO - New Phytologist
JF - New Phytologist
IS - 2
ER -