An Indomalesian origin in the Miocene for the diphyletic New World jewel orchids (Goodyerinae, Orchidoideae): molecular dating and biogeographic analyses document non-monophyly of the Neotropical genera
- 12 May 2021
- journal article
- research article
- Published by Oxford University Press (OUP) in Botanical Journal of the Linnean Society
- Vol. 197 (3), 322-349
- https://doi.org/10.1093/botlinnean/boab028
Abstract
The jewel orchids (Goodyerinae), named after their often colourful leaves, have a pantropical distribution with a clear Asian centre of diversity. However, the Nearctic and Neotropical America together form a second centre of diversity, with one-third of known species of Goodyerinae. Previously, only a few American samples have been included in phylogenetic studies, and their putatively Asian origins and American divergence times were poorly known. To elucidate these topics, we inferred phylogenetic trees, performed molecular dating and reconstructed biogeographic history using nuclear ribosomal ITS and plastid matK sequences for 34 species of Goodyerinae from the New World and 76 previously published accessions of Cranichideae. Our well-supported phylogenetic topology suggests two independent dispersal events to the New World from the Indomalesian region during the Miocene. The first inferred dispersal of a Neotropical clade diverged c. 11 Mya from their most recent common ancestor (MRCA), comprising three highly supported subclades that do not match the limits of Aspidogyne, Kreodanthus and Microchilus as previously circumscribed. The second dispersal involved a largely Nearctic clade of Goodyera s.l. diverging c. 8.4 Mya from the MRCA and exhibiting a complex biogeographic history with subsequent dispersals between the Nearctic and Indomalesia. The occurrence of these species in gallery forests putatively prevented vicariance events imposed by the expansion of the Chacoan region as previously detected for epiphytic Orchidaceae. Eighty-nine nomenclatural combinations and three new names in Microchilus are proposed.Keywords
This publication has 67 references indexed in Scilit:
- Ultrafast Approximation for Phylogenetic BootstrapMolecular Biology and Evolution, 2013
- MAFFT Multiple Sequence Alignment Software Version 7: Improvements in Performance and UsabilityMolecular Biology and Evolution, 2013
- Large-scale phylogeography of the disjunct Neotropical tree species Schizolobium parahyba (Fabaceae-Caesalpinioideae)Molecular Phylogenetics and Evolution, 2012
- Bayesian Phylogenetics with BEAUti and the BEAST 1.7Molecular Biology and Evolution, 2012
- MrBayes 3.2: Efficient Bayesian Phylogenetic Inference and Model Choice Across a Large Model SpaceSystematic Biology, 2012
- Accurate Model Selection of Relaxed Molecular Clocks in Bayesian PhylogeneticsMolecular Biology and Evolution, 2012
- Recent assembly of the Cerrado, a neotropical plant diversity hotspot, by in situ evolution of adaptations to fireProceedings of the National Academy of Sciences of the United States of America, 2009
- Tracing the impact of the Andean uplift on Neotropical plant evolutionProceedings of the National Academy of Sciences of the United States of America, 2009
- Phylogenetic relationships of Cranichidinae and Prescottiinae (Orchidaceae, Cranichideae) inferred from plastid and nuclear DNA sequencesAnnals of Botany, 2009
- Ecomorphological diversification among South American spiny rats (Rodentia; Echimyidae): a phylogenetic and chronological approachMolecular Phylogenetics and Evolution, 2005