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Phylogeny of Carex subg. Vignea (Cyperaceae) Based on Amplified Fragment Length Polymorphism and nrDNA Data

Carex subg. Vignea is a distinctive taxon characterized by sessile, bisexual inflorescence units, distigmatic flowers, and the lack of cladoprophylls. Evolutionary relationships within this subgenus were examined using amplified fragment length polymorphism (AFLP) data alone and in combination with... Full description

Journal Title: Systematic botany 2012-10, Vol.37 (4), p.913-925
Main Author: Ford, Bruce A
Other Authors: Ghazvini, Habibollah , Naczi, Robert F. C , Starr, Julian R
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: American Society of Plant Toxonomists
ID: ISSN: 0363-6445
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recordid: cdi_proquest_miscellaneous_1221141389
title: Phylogeny of Carex subg. Vignea (Cyperaceae) Based on Amplified Fragment Length Polymorphism and nrDNA Data
format: Article
creator:
  • Ford, Bruce A
  • Ghazvini, Habibollah
  • Naczi, Robert F. C
  • Starr, Julian R
subjects:
  • AFLP
  • Amplified fragment length polymorphism
  • Bayesian analysis
  • Biological taxonomies
  • Bisexual
  • Carex
  • Cariceae
  • Cyperaceae
  • Data processing
  • Datasets
  • DNA sequencing
  • Evolution
  • Flowers
  • Genetic aspects
  • Genetic polymorphisms
  • Geography
  • homoplasy
  • ITS and ETS 1f sequences
  • Mixed Datasets
  • nrDNA
  • Nucleotide sequencing
  • Parsimony
  • Phylogenetics
  • Phylogeny
  • Physiological aspects
  • Plant genetics
  • Plants
  • Spacer
  • Taxa
  • Trees
  • Waterways
ispartof: Systematic botany, 2012-10, Vol.37 (4), p.913-925
description: Carex subg. Vignea is a distinctive taxon characterized by sessile, bisexual inflorescence units, distigmatic flowers, and the lack of cladoprophylls. Evolutionary relationships within this subgenus were examined using amplified fragment length polymorphism (AFLP) data alone and in combination with nrDNA ILS and ETS 1f (external transcribed spacer 1 fragment) sequences. Parsimony and Bayesian analyses of the combined dataset show the atypical C. gibba (tristigmatic flowers, cladoprophylls) to be sister to the remainder of subg. Vignea. All gynaecandrous sections are monophyletic, with gynaecandry having arisen multiple times. In contrast, androgynous sections are largely polyphyletic, with most clades comprised of disparate assemblages of taxa that are often difficult to correlate with morphology or geography. Bootstrap values/posterior probabilities support terminal and early diverging clades, but support along the backbone of all trees is poor. Trees produced using Bayesian methods have a greater number of supported branches than those produced by parsimony, suggesting that the high levels of homoplasy observed within the combined dataset may be better addressed by a model-based method. Bayesian analysis of the AFLP data alone results in trees that are topologically similar to those produced by a Bayesian analysis of the combined data. Parsimony trees generated using AFLP data alone are topologically different from other phylogenetic reconstructions. In groups such as subg. Vignea, which may be recently evolved, AFLPs provide a rich source of highly variable characters that give good support for terminal clades. However, high rates of homoplasy will likely limit their application in higher-level phylogenetic studies in Carex.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0363-6445
fulltext: fulltext
issn:
  • 0363-6445
  • 1548-2324
url: Link


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titlePhylogeny of Carex subg. Vignea (Cyperaceae) Based on Amplified Fragment Length Polymorphism and nrDNA Data
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creatorFord, Bruce A ; Ghazvini, Habibollah ; Naczi, Robert F. C ; Starr, Julian R
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descriptionCarex subg. Vignea is a distinctive taxon characterized by sessile, bisexual inflorescence units, distigmatic flowers, and the lack of cladoprophylls. Evolutionary relationships within this subgenus were examined using amplified fragment length polymorphism (AFLP) data alone and in combination with nrDNA ILS and ETS 1f (external transcribed spacer 1 fragment) sequences. Parsimony and Bayesian analyses of the combined dataset show the atypical C. gibba (tristigmatic flowers, cladoprophylls) to be sister to the remainder of subg. Vignea. All gynaecandrous sections are monophyletic, with gynaecandry having arisen multiple times. In contrast, androgynous sections are largely polyphyletic, with most clades comprised of disparate assemblages of taxa that are often difficult to correlate with morphology or geography. Bootstrap values/posterior probabilities support terminal and early diverging clades, but support along the backbone of all trees is poor. Trees produced using Bayesian methods have a greater number of supported branches than those produced by parsimony, suggesting that the high levels of homoplasy observed within the combined dataset may be better addressed by a model-based method. Bayesian analysis of the AFLP data alone results in trees that are topologically similar to those produced by a Bayesian analysis of the combined data. Parsimony trees generated using AFLP data alone are topologically different from other phylogenetic reconstructions. In groups such as subg. Vignea, which may be recently evolved, AFLPs provide a rich source of highly variable characters that give good support for terminal clades. However, high rates of homoplasy will likely limit their application in higher-level phylogenetic studies in Carex.
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subjectAFLP ; Amplified fragment length polymorphism ; Bayesian analysis ; Biological taxonomies ; Bisexual ; Carex ; Cariceae ; Cyperaceae ; Data processing ; Datasets ; DNA sequencing ; Evolution ; Flowers ; Genetic aspects ; Genetic polymorphisms ; Geography ; homoplasy ; ITS and ETS 1f sequences ; Mixed Datasets ; nrDNA ; Nucleotide sequencing ; Parsimony ; Phylogenetics ; Phylogeny ; Physiological aspects ; Plant genetics ; Plants ; Spacer ; Taxa ; Trees ; Waterways
ispartofSystematic botany, 2012-10, Vol.37 (4), p.913-925
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descriptionCarex subg. Vignea is a distinctive taxon characterized by sessile, bisexual inflorescence units, distigmatic flowers, and the lack of cladoprophylls. Evolutionary relationships within this subgenus were examined using amplified fragment length polymorphism (AFLP) data alone and in combination with nrDNA ILS and ETS 1f (external transcribed spacer 1 fragment) sequences. Parsimony and Bayesian analyses of the combined dataset show the atypical C. gibba (tristigmatic flowers, cladoprophylls) to be sister to the remainder of subg. Vignea. All gynaecandrous sections are monophyletic, with gynaecandry having arisen multiple times. In contrast, androgynous sections are largely polyphyletic, with most clades comprised of disparate assemblages of taxa that are often difficult to correlate with morphology or geography. Bootstrap values/posterior probabilities support terminal and early diverging clades, but support along the backbone of all trees is poor. Trees produced using Bayesian methods have a greater number of supported branches than those produced by parsimony, suggesting that the high levels of homoplasy observed within the combined dataset may be better addressed by a model-based method. Bayesian analysis of the AFLP data alone results in trees that are topologically similar to those produced by a Bayesian analysis of the combined data. Parsimony trees generated using AFLP data alone are topologically different from other phylogenetic reconstructions. In groups such as subg. Vignea, which may be recently evolved, AFLPs provide a rich source of highly variable characters that give good support for terminal clades. However, high rates of homoplasy will likely limit their application in higher-level phylogenetic studies in Carex.
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abstractCarex subg. Vignea is a distinctive taxon characterized by sessile, bisexual inflorescence units, distigmatic flowers, and the lack of cladoprophylls. Evolutionary relationships within this subgenus were examined using amplified fragment length polymorphism (AFLP) data alone and in combination with nrDNA ILS and ETS 1f (external transcribed spacer 1 fragment) sequences. Parsimony and Bayesian analyses of the combined dataset show the atypical C. gibba (tristigmatic flowers, cladoprophylls) to be sister to the remainder of subg. Vignea. All gynaecandrous sections are monophyletic, with gynaecandry having arisen multiple times. In contrast, androgynous sections are largely polyphyletic, with most clades comprised of disparate assemblages of taxa that are often difficult to correlate with morphology or geography. Bootstrap values/posterior probabilities support terminal and early diverging clades, but support along the backbone of all trees is poor. Trees produced using Bayesian methods have a greater number of supported branches than those produced by parsimony, suggesting that the high levels of homoplasy observed within the combined dataset may be better addressed by a model-based method. Bayesian analysis of the AFLP data alone results in trees that are topologically similar to those produced by a Bayesian analysis of the combined data. Parsimony trees generated using AFLP data alone are topologically different from other phylogenetic reconstructions. In groups such as subg. Vignea, which may be recently evolved, AFLPs provide a rich source of highly variable characters that give good support for terminal clades. However, high rates of homoplasy will likely limit their application in higher-level phylogenetic studies in Carex.
pubAmerican Society of Plant Toxonomists
doi10.1600/036364412X656464
tpages13