Molecular systematics of Telipogon (Orchidaceae: Oncidiinae) and its allies: nuclear and plastid DNA sequence data
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Williams, Norris H.
Whitten, W. Mark
Dressler, Robert L.
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Universidad de Costa Rica
Abstract
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Se evaluaron las relaciones filogenéticas de Telipogon, Ornithocephalus y géneros afines (Orchidaceae: Oncidiinae) mediante análisis de parsimonia de datos de espaciadores de ADN ribosomal nuclear (nrITS) y de tres regiones de ADN de plastidios (matK, trnL-F y la región espaciadora intergénica atpB-rbcL). Además de un análisis de 81 OTU con ITS, se usó una matriz de 30 taxa para realizar análisis combinados de ADN nuclear y de plastidios. Stellilabium aparece anidado dentro de Telipogon. Éste presenta dos clados sudamericanos y uno centroamericano. Un clado de Stellilabium es hermano del clado centroamericano de Telipogon; el segundo clado de Stellilabium es hermano de todas las especies centroamericanas de Telipogon y Stellilabium. Hofmeisterella es un miembro del grupo de Telipogon. El género Dipterostele como tal no se justifica, según este estudio. Se realizan cambios nomenclatoriales para transferir las especies de Stellilabium a Telipogon.
Phylogenetic relationships of Telipogon Kunth, Ornithocephalus Hook. and related genera (Orchidaceae: Oncidiinae) were evaluated using parsimony analyses of data from the internal transcribed spacers of nuclear ribosomal (nrITS DNA) and three plastid regions (matK, trnL-F, and the atpB-rbcL intergenic spacer region). In addition to an analysis of 81 OTU’s for ITS only, we used a matrix of 30 taxa for combined nuclear and plastid analyses. Stellilabium is embedded within Telipogon and should be merged with the latter genus. Telipogon consists of two South American clades and a Central American clade. One Stellilabium clade is sister to the Central American clade of Telipogon, and the second Stellilabium clade is sister to all of the Central American species of Telipogon and Stellilabium. Hofmeisterella is a member of the Telipogon alliance. The genus Dipterostele is not supported by this work. Nomenclatural changes are made transferring Stellilabium to Telipogon.
Phylogenetic relationships of Telipogon Kunth, Ornithocephalus Hook. and related genera (Orchidaceae: Oncidiinae) were evaluated using parsimony analyses of data from the internal transcribed spacers of nuclear ribosomal (nrITS DNA) and three plastid regions (matK, trnL-F, and the atpB-rbcL intergenic spacer region). In addition to an analysis of 81 OTU’s for ITS only, we used a matrix of 30 taxa for combined nuclear and plastid analyses. Stellilabium is embedded within Telipogon and should be merged with the latter genus. Telipogon consists of two South American clades and a Central American clade. One Stellilabium clade is sister to the Central American clade of Telipogon, and the second Stellilabium clade is sister to all of the Central American species of Telipogon and Stellilabium. Hofmeisterella is a member of the Telipogon alliance. The genus Dipterostele is not supported by this work. Nomenclatural changes are made transferring Stellilabium to Telipogon.
Keywords
Hofmeisterella, Ornithocephalus, Stellilabium, Telipogon, Oncidiinae, Orchidaceae, Hofmeisterella, Ornithocephalus, Stellilabium, Telipogon, Oncidiinae, Orchidaceae