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Coursetia (Leguminosae) from Eastern Brazil: Nuclear Ribosomal and Chloroplast DNA Sequence Analysis Reveal the Monophyly of Three Caatinga-Inhabiting Species

Three woody species of Coursetia from eastern Brazil are here classified into the Rostrata clade, Coursetia caatingicola, C. rostrata, and C. vicioides. All come from the Southern Sertaneja Depression of the caatinga, and the first of these is herein described. The antiquity of this geographically c... Full description

Journal Title: Systematic botany 2011-01, Vol.36 (1), p.69-79
Main Author: Queiroz, Luciano Paganucci de
Other Authors: Lavin, Matt
Format: Electronic Article Electronic Article
Language: English
Subjects:
Age
Quelle: Alma/SFX Local Collection
Publisher: American Society of Plant Toxonomists
ID: ISSN: 0363-6445
Zum Text:
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recordid: cdi_crossref_primary_10_1600_036364411X553144
title: Coursetia (Leguminosae) from Eastern Brazil: Nuclear Ribosomal and Chloroplast DNA Sequence Analysis Reveal the Monophyly of Three Caatinga-Inhabiting Species
format: Article
creator:
  • Queiroz, Luciano Paganucci de
  • Lavin, Matt
subjects:
  • Age
  • Beans
  • Biological taxonomies
  • Botany
  • Caatinga
  • Chloroplast DNA
  • Chloroplasts
  • Coalescence
  • Conspecifics
  • Coursetia
  • Depression
  • Dispersal Limitation
  • Evolution
  • Flowering
  • Genetic aspects
  • Geographic Phylogenetic Structure
  • Geriatrics
  • Identification and classification
  • Inflorescences
  • Legumes
  • Mimosaceae
  • Nomenclature
  • Nucleotide sequence
  • Parsimony
  • Pedicels
  • Petals
  • Phylogenetic Niche Conservatism
  • Phylogenetics
  • Phylogeny
  • Plant genetics
  • Plants
  • Seasonally Dry Tropical Woodlands
  • Spacer
  • Vegetation
ispartof: Systematic botany, 2011-01, Vol.36 (1), p.69-79
description: Three woody species of Coursetia from eastern Brazil are here classified into the Rostrata clade, Coursetia caatingicola, C. rostrata, and C. vicioides. All come from the Southern Sertaneja Depression of the caatinga, and the first of these is herein described. The antiquity of this geographically confined clade is suggested by its phylogenetic isolation within Coursetia and minimum age estimates of about 9 Ma for each of the species stem clades and about 17 Ma for the Rostrata stem. These age estimates were biased young and are associated with ITS rates of substitution of about 2–3 × 10-9 substitutions per site per year, an expected rate for woody plant lineages. Multiple DNA sequence accessions coalesce with respect to nuclear ribosomal 5.8S and internal transcribed spacer (ITS) sequences for Coursetia caatingicola and C. rostrata, and with respect to chloroplast trnD-T sequences for Coursetia caatingicola. Coalescence of conspecific nuclear DNA sequence samples combined with relatively old minimum age estimates are suggestive of the evolutionary stability of local patches of seasonally dry tropical vegetation that are rich in succulent taxa. This phylogenetic signature is more likely to be found in lineages harbored by this than other types of Neotropical vegetation.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0363-6445
fulltext: fulltext
issn:
  • 0363-6445
  • 1548-2324
url: Link


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titleCoursetia (Leguminosae) from Eastern Brazil: Nuclear Ribosomal and Chloroplast DNA Sequence Analysis Reveal the Monophyly of Three Caatinga-Inhabiting Species
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creatorQueiroz, Luciano Paganucci de ; Lavin, Matt
creatorcontribQueiroz, Luciano Paganucci de ; Lavin, Matt
descriptionThree woody species of Coursetia from eastern Brazil are here classified into the Rostrata clade, Coursetia caatingicola, C. rostrata, and C. vicioides. All come from the Southern Sertaneja Depression of the caatinga, and the first of these is herein described. The antiquity of this geographically confined clade is suggested by its phylogenetic isolation within Coursetia and minimum age estimates of about 9 Ma for each of the species stem clades and about 17 Ma for the Rostrata stem. These age estimates were biased young and are associated with ITS rates of substitution of about 2–3 × 10-9 substitutions per site per year, an expected rate for woody plant lineages. Multiple DNA sequence accessions coalesce with respect to nuclear ribosomal 5.8S and internal transcribed spacer (ITS) sequences for Coursetia caatingicola and C. rostrata, and with respect to chloroplast trnD-T sequences for Coursetia caatingicola. Coalescence of conspecific nuclear DNA sequence samples combined with relatively old minimum age estimates are suggestive of the evolutionary stability of local patches of seasonally dry tropical vegetation that are rich in succulent taxa. This phylogenetic signature is more likely to be found in lineages harbored by this than other types of Neotropical vegetation.
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subjectAge ; Beans ; Biological taxonomies ; Botany ; Caatinga ; Chloroplast DNA ; Chloroplasts ; Coalescence ; Conspecifics ; Coursetia ; Depression ; Dispersal Limitation ; Evolution ; Flowering ; Genetic aspects ; Geographic Phylogenetic Structure ; Geriatrics ; Identification and classification ; Inflorescences ; Legumes ; Mimosaceae ; Nomenclature ; Nucleotide sequence ; Parsimony ; Pedicels ; Petals ; Phylogenetic Niche Conservatism ; Phylogenetics ; Phylogeny ; Plant genetics ; Plants ; Seasonally Dry Tropical Woodlands ; Spacer ; Vegetation
ispartofSystematic botany, 2011-01, Vol.36 (1), p.69-79
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1Systematic botany
descriptionThree woody species of Coursetia from eastern Brazil are here classified into the Rostrata clade, Coursetia caatingicola, C. rostrata, and C. vicioides. All come from the Southern Sertaneja Depression of the caatinga, and the first of these is herein described. The antiquity of this geographically confined clade is suggested by its phylogenetic isolation within Coursetia and minimum age estimates of about 9 Ma for each of the species stem clades and about 17 Ma for the Rostrata stem. These age estimates were biased young and are associated with ITS rates of substitution of about 2–3 × 10-9 substitutions per site per year, an expected rate for woody plant lineages. Multiple DNA sequence accessions coalesce with respect to nuclear ribosomal 5.8S and internal transcribed spacer (ITS) sequences for Coursetia caatingicola and C. rostrata, and with respect to chloroplast trnD-T sequences for Coursetia caatingicola. Coalescence of conspecific nuclear DNA sequence samples combined with relatively old minimum age estimates are suggestive of the evolutionary stability of local patches of seasonally dry tropical vegetation that are rich in succulent taxa. This phylogenetic signature is more likely to be found in lineages harbored by this than other types of Neotropical vegetation.
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7Coalescence
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9Coursetia
10Depression
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12Evolution
13Flowering
14Genetic aspects
15Geographic Phylogenetic Structure
16Geriatrics
17Identification and classification
18Inflorescences
19Legumes
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21Nomenclature
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23Parsimony
24Pedicels
25Petals
26Phylogenetic Niche Conservatism
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28Phylogeny
29Plant genetics
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31Seasonally Dry Tropical Woodlands
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atitleCoursetia (Leguminosae) from Eastern Brazil: Nuclear Ribosomal and Chloroplast DNA Sequence Analysis Reveal the Monophyly of Three Caatinga-Inhabiting Species
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abstractThree woody species of Coursetia from eastern Brazil are here classified into the Rostrata clade, Coursetia caatingicola, C. rostrata, and C. vicioides. All come from the Southern Sertaneja Depression of the caatinga, and the first of these is herein described. The antiquity of this geographically confined clade is suggested by its phylogenetic isolation within Coursetia and minimum age estimates of about 9 Ma for each of the species stem clades and about 17 Ma for the Rostrata stem. These age estimates were biased young and are associated with ITS rates of substitution of about 2–3 × 10-9 substitutions per site per year, an expected rate for woody plant lineages. Multiple DNA sequence accessions coalesce with respect to nuclear ribosomal 5.8S and internal transcribed spacer (ITS) sequences for Coursetia caatingicola and C. rostrata, and with respect to chloroplast trnD-T sequences for Coursetia caatingicola. Coalescence of conspecific nuclear DNA sequence samples combined with relatively old minimum age estimates are suggestive of the evolutionary stability of local patches of seasonally dry tropical vegetation that are rich in succulent taxa. This phylogenetic signature is more likely to be found in lineages harbored by this than other types of Neotropical vegetation.
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doi10.1600/036364411X553144
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