Translator Disclaimer
1 July 2010 Molecular Phylogenetics of Galeandra (Orchidaceae: Catasetinae) Based on Plastid and Nuclear DNA Sequences
Author Affiliations +
Abstract

Galeandra is a neotropical genus with its center of diversity in the Amazon region. It comprises approximately 18 species of epiphytic and terrestrial herbs that are easily recognizable by their funnel-shaped labellum. We examined the phylogenetic relationships among species of Galeandra inferred from nucleotide sequences from three plastid (psbA-trnH, rpoB-trnC, and trnS-trnG) and two nuclear (ITS and ETS) DNA regions. The five data matrices were analyzed individually and in combined analyses using parsimony and maximum likelihood. We found that the epiphytic species G. devoniana is sister to the remainder of the genus, and that the other species form two groups, one consisting of epiphytic species and the other composed of terrestrial species. Adaptation to the terrestrial environment from a probable epiphytic ancestor was of great importance in the evolution of Galeandra. The relationships found in this study do not support previous infrageneric classifications.

© Copyright 2010 by the American Society of Plant Taxonomists
Silvana Helena N. Monteiro, Alessandra Selbach-Schnadelbach, Reyjane Patrícia de Oliveira, and Cássio van den Berg "Molecular Phylogenetics of Galeandra (Orchidaceae: Catasetinae) Based on Plastid and Nuclear DNA Sequences," Systematic Botany 35(3), 476-486, (1 July 2010). https://doi.org/10.1600/036364410792495944
Published: 1 July 2010
JOURNAL ARTICLE
11 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top