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Phylogeny of the Genus Phaseolus (Leguminosae): A Recent Diversification in an Ancient Landscape

A combined parsimony analysis of the species of Phaseolus and closely related New World genera was performed with sequences from the nuclear ribosomal ITS/5.8 S and plastid trnK loci. Species relationships are resolved with high parsimony bootstrap support at all hierarchical levels. All species of... Full description

Journal Title: Systematic botany 2006-10, Vol.31 (4), p.779-791
Main Author: Delgado-Salinas, Alfonso
Other Authors: Bibler, Ryan , Lavin, Matt
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: Laramie WY 82071, USA: American Society of Plant Taxonomists
ID: ISSN: 0363-6445
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recordid: cdi_ingenta_journals_ic_aspt_03636445_v31n4_20210906_1412_default_tar_gz_s10
title: Phylogeny of the Genus Phaseolus (Leguminosae): A Recent Diversification in an Ancient Landscape
format: Article
creator:
  • Delgado-Salinas, Alfonso
  • Bibler, Ryan
  • Lavin, Matt
subjects:
  • Analytical estimating
  • Biological taxonomies
  • Datasets
  • Evolution
  • EVOLUTIONARY RATES
  • INFORMAL CLASSIFICATION
  • Internal transcribed spacers
  • MEXICO
  • Parsimony
  • PHASEOLINAE
  • PHASEOLUS
  • Phylogenetics
  • Phylogeny
  • Plants
  • Research s
  • SYSTEMATICS
  • Taxa
ispartof: Systematic botany, 2006-10, Vol.31 (4), p.779-791
description: A combined parsimony analysis of the species of Phaseolus and closely related New World genera was performed with sequences from the nuclear ribosomal ITS/5.8 S and plastid trnK loci. Species relationships are resolved with high parsimony bootstrap support at all hierarchical levels. All species of Phaseolus, except five enigmatic ones, belong to one of eight clades. These eight clades show some morphological, ecological, or biogeographical distinction, and are informally recognized in a phylogenetic classification. The five enigmatic species, Phaseolus glabellus, P. macrolepis, P. microcarpus, P. oaxacanus, and P. talamancensis are weakly resolved as the sister clade to the Tuerckheimii group. An evolutionary rates analysis that biases for old age estimates suggests that the Phaseolus stem clade is the same age as the New World Phaseolinae crown clade with a maximum age of ca. 8 Ma. The Phaseolus crown is estimated to be no older than ca. 6 Ma, and the average age of the eight well supported crown clades within Phaseolus is ca. 2 Ma. The maximum age estimate of a Late Pliocene to Pleistocene diversification of Phaseolus post-dates the major tectonic activity in Mexico where Phaseolus diversity is centered.
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 the Genus Phaseolus (Leguminosae): A Recent Diversification in an Ancient Landscape
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descriptionA combined parsimony analysis of the species of Phaseolus and closely related New World genera was performed with sequences from the nuclear ribosomal ITS/5.8 S and plastid trnK loci. Species relationships are resolved with high parsimony bootstrap support at all hierarchical levels. All species of Phaseolus, except five enigmatic ones, belong to one of eight clades. These eight clades show some morphological, ecological, or biogeographical distinction, and are informally recognized in a phylogenetic classification. The five enigmatic species, Phaseolus glabellus, P. macrolepis, P. microcarpus, P. oaxacanus, and P. talamancensis are weakly resolved as the sister clade to the Tuerckheimii group. An evolutionary rates analysis that biases for old age estimates suggests that the Phaseolus stem clade is the same age as the New World Phaseolinae crown clade with a maximum age of ca. 8 Ma. The Phaseolus crown is estimated to be no older than ca. 6 Ma, and the average age of the eight well supported crown clades within Phaseolus is ca. 2 Ma. The maximum age estimate of a Late Pliocene to Pleistocene diversification of Phaseolus post-dates the major tectonic activity in Mexico where Phaseolus diversity is centered.
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subjectAnalytical estimating ; Biological taxonomies ; Datasets ; Evolution ; EVOLUTIONARY RATES ; INFORMAL CLASSIFICATION ; Internal transcribed spacers ; MEXICO ; Parsimony ; PHASEOLINAE ; PHASEOLUS ; Phylogenetics ; Phylogeny ; Plants ; Research s ; SYSTEMATICS ; Taxa
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abstractA combined parsimony analysis of the species of Phaseolus and closely related New World genera was performed with sequences from the nuclear ribosomal ITS/5.8 S and plastid trnK loci. Species relationships are resolved with high parsimony bootstrap support at all hierarchical levels. All species of Phaseolus, except five enigmatic ones, belong to one of eight clades. These eight clades show some morphological, ecological, or biogeographical distinction, and are informally recognized in a phylogenetic classification. The five enigmatic species, Phaseolus glabellus, P. macrolepis, P. microcarpus, P. oaxacanus, and P. talamancensis are weakly resolved as the sister clade to the Tuerckheimii group. An evolutionary rates analysis that biases for old age estimates suggests that the Phaseolus stem clade is the same age as the New World Phaseolinae crown clade with a maximum age of ca. 8 Ma. The Phaseolus crown is estimated to be no older than ca. 6 Ma, and the average age of the eight well supported crown clades within Phaseolus is ca. 2 Ma. The maximum age estimate of a Late Pliocene to Pleistocene diversification of Phaseolus post-dates the major tectonic activity in Mexico where Phaseolus diversity is centered.
copLaramie WY 82071, USA
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