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Molecular Phylogenetics of Galeandra (Orchidaceae: Catasetinae) Based on Plastid and Nuclear DNA Sequences

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 fr... Full description

Journal Title: Systematic botany 2010, Vol.35 (3), p.476-486
Main Author: Monteiro, Silvana Helena N
Other Authors: Selbach-Schnadelbach, Alessandra , de Oliveira, Reyjane Patricia , Berg, Cassio van den
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
ID: ISSN: 0363-6445
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recordid: cdi_proquest_miscellaneous_860378681
title: Molecular Phylogenetics of Galeandra (Orchidaceae: Catasetinae) Based on Plastid and Nuclear DNA Sequences
format: Article
creator:
  • Monteiro, Silvana Helena N
  • Selbach-Schnadelbach, Alessandra
  • de Oliveira, Reyjane Patricia
  • Berg, Cassio van den
subjects:
  • Galeandra
  • Orchidaceae
ispartof: Systematic botany, 2010, Vol.35 (3), p.476-486
description: 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.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0363-6445
fulltext: fulltext
issn:
  • 0363-6445
  • 1548-2324
url: Link


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titleMolecular Phylogenetics of Galeandra (Orchidaceae: Catasetinae) Based on Plastid and Nuclear DNA Sequences
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creatorMonteiro, Silvana Helena N ; Selbach-Schnadelbach, Alessandra ; de Oliveira, Reyjane Patricia ; Berg, Cassio van den
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descriptionGaleandra 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.
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atitleMolecular Phylogenetics of Galeandra (Orchidaceae: Catasetinae) Based on Plastid and Nuclear DNA Sequences
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abstractGaleandra 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.
doi10.1600/036364410X528747