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Phylogenetic Analysis of the Wintergreen Group (Ericaceae) based on Six Genie Regions

Previous phylogenetic studies based on DNA sequence data from the genic regions ndhF, matK, atpB–rbcL (cpDNA) and ITS 2 (nrDNA) strongly support the monophyly of the wintergreen group (Ericaceae: Gaultherieae: Diplycosia, Gaultheria, Tepuia) and have assessed the relationships of its major clades. O... Full description

Journal Title: Systematic botany 2011-10-01, Vol.36 (4), p.990-1003
Main Author: Peter W. Fritsch
Other Authors: Lu Lu , Catherine M. Bush , Boni C. Cruz , Kathleen A. Kron , De-Zhu Li
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: American Society of Plant Taxonomists
ID: ISSN: 0363-6445
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recordid: cdi_jstor_primary_41416914
title: Phylogenetic Analysis of the Wintergreen Group (Ericaceae) based on Six Genie Regions
format: Article
creator:
  • Peter W. Fritsch
  • Lu Lu
  • Catherine M. Bush
  • Boni C. Cruz
  • Kathleen A. Kron
  • De-Zhu Li
subjects:
  • Biological taxonomies
  • Chloroplasts
  • Datasets
  • Evolution
  • Inflorescences
  • Phylogenetics
  • Phylogeny
  • Plants
  • Topology
  • Vouchers
ispartof: Systematic botany, 2011-10-01, Vol.36 (4), p.990-1003
description: Previous phylogenetic studies based on DNA sequence data from the genic regions ndhF, matK, atpB–rbcL (cpDNA) and ITS 2 (nrDNA) strongly support the monophyly of the wintergreen group (Ericaceae: Gaultherieae: Diplycosia, Gaultheria, Tepuia) and have assessed the relationships of its major clades. Other studies that include additional genic regions have been limited to two clades corresponding to various sections or series within Gaultheria. Here we expand both the number of species (from 42 to 104) and genic regions (chloroplast matK, ndhF, rpl16, trnLtrnF, trnS–trnG, and the complete ITS region) to further assess phylogenetic relationships in the wintergreen group. With the additional data we detected several areas of incongruence between the trees from the nuclear and combined chloroplast analyses, including a topologically deep conflict involving G. procumbens. Such incongruence likely originated from reticulation events, long considered to have influenced the evolution of various lineages in Gaultheria. We also detected a duplication, possibly nuclear-encoded, of the matK region in one of the Australian/New Zealand lineages. A combined six-gene analysis, in which taxa involved in the conflicting topologies were excluded, yielded higher support values for several early-diverging clades. The monophyly of both Diplycosia and Tepuia is corroborated, as is the successive nesting of Tepuia, G. section Hispidulae (both placements of which have newfound strong support), G. ser. Gymnobotrys, and Diplycosia. Whereas several sections or series with more than one species in the most recent classification of Gaultheria are supported as circumscribed (i.e. G. section Amblyandra and series Hispidulae, Myrtilloideae, and Trichophyllae), others comprise species from two to several different clades.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0363-6445
fulltext: fulltext
issn:
  • 0363-6445
  • 1548-2324
url: Link


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titlePhylogenetic Analysis of the Wintergreen Group (Ericaceae) based on Six Genie Regions
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creatorPeter W. Fritsch ; Lu Lu ; Catherine M. Bush ; Boni C. Cruz ; Kathleen A. Kron ; De-Zhu Li
creatorcontribPeter W. Fritsch ; Lu Lu ; Catherine M. Bush ; Boni C. Cruz ; Kathleen A. Kron ; De-Zhu Li
descriptionPrevious phylogenetic studies based on DNA sequence data from the genic regions ndhF, matK, atpB–rbcL (cpDNA) and ITS 2 (nrDNA) strongly support the monophyly of the wintergreen group (Ericaceae: Gaultherieae: Diplycosia, Gaultheria, Tepuia) and have assessed the relationships of its major clades. Other studies that include additional genic regions have been limited to two clades corresponding to various sections or series within Gaultheria. Here we expand both the number of species (from 42 to 104) and genic regions (chloroplast matK, ndhF, rpl16, trnLtrnF, trnS–trnG, and the complete ITS region) to further assess phylogenetic relationships in the wintergreen group. With the additional data we detected several areas of incongruence between the trees from the nuclear and combined chloroplast analyses, including a topologically deep conflict involving G. procumbens. Such incongruence likely originated from reticulation events, long considered to have influenced the evolution of various lineages in Gaultheria. We also detected a duplication, possibly nuclear-encoded, of the matK region in one of the Australian/New Zealand lineages. A combined six-gene analysis, in which taxa involved in the conflicting topologies were excluded, yielded higher support values for several early-diverging clades. The monophyly of both Diplycosia and Tepuia is corroborated, as is the successive nesting of Tepuia, G. section Hispidulae (both placements of which have newfound strong support), G. ser. Gymnobotrys, and Diplycosia. Whereas several sections or series with more than one species in the most recent classification of Gaultheria are supported as circumscribed (i.e. G. section Amblyandra and series Hispidulae, Myrtilloideae, and Trichophyllae), others comprise species from two to several different clades.
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subjectBiological taxonomies ; Chloroplasts ; Datasets ; Evolution ; Inflorescences ; Phylogenetics ; Phylogeny ; Plants ; Topology ; Vouchers
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abstractPrevious phylogenetic studies based on DNA sequence data from the genic regions ndhF, matK, atpB–rbcL (cpDNA) and ITS 2 (nrDNA) strongly support the monophyly of the wintergreen group (Ericaceae: Gaultherieae: Diplycosia, Gaultheria, Tepuia) and have assessed the relationships of its major clades. Other studies that include additional genic regions have been limited to two clades corresponding to various sections or series within Gaultheria. Here we expand both the number of species (from 42 to 104) and genic regions (chloroplast matK, ndhF, rpl16, trnLtrnF, trnS–trnG, and the complete ITS region) to further assess phylogenetic relationships in the wintergreen group. With the additional data we detected several areas of incongruence between the trees from the nuclear and combined chloroplast analyses, including a topologically deep conflict involving G. procumbens. Such incongruence likely originated from reticulation events, long considered to have influenced the evolution of various lineages in Gaultheria. We also detected a duplication, possibly nuclear-encoded, of the matK region in one of the Australian/New Zealand lineages. A combined six-gene analysis, in which taxa involved in the conflicting topologies were excluded, yielded higher support values for several early-diverging clades. The monophyly of both Diplycosia and Tepuia is corroborated, as is the successive nesting of Tepuia, G. section Hispidulae (both placements of which have newfound strong support), G. ser. Gymnobotrys, and Diplycosia. Whereas several sections or series with more than one species in the most recent classification of Gaultheria are supported as circumscribed (i.e. G. section Amblyandra and series Hispidulae, Myrtilloideae, and Trichophyllae), others comprise species from two to several different clades.
pubAmerican Society of Plant Taxonomists