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Phylogenetic relationships of Burmeistera (Campanulaceae: Lobelioideae): Combining whole plastome with targeted loci data in a recent radiation
- Uribe-Convers, S. (author)
- Carlsen, M. M. (author)
-
- Lagomarsino, Laura P. (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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- Muchhala, N. (author)
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- (creator_code:org_t)
- Elsevier BV, 2017
- 2017
- English.
- In: Molecular Phylogenetics and Evolution. - : Elsevier BV. - 1055-7903. ; 107, s. 551-563
- Journal article (peer-reviewed)
Abstract
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- The field of molecular systematics has benefited greatly with the advent of high-throughput sequencing (HTS), making large genomic datasets commonplace. However, a large number of targeted Sanger sequences produced by many studies over the last two decades are publicly available and should not be overlooked. In this study, we elucidate the phylogenetic relationships of the plant genus Burmeistera (Campanulaceae: Lobelioideae), while investigating how to best combine targeted Sanger loci with FITS data. We sequence, annotate, and analyze complete to nearly complete plastomes for a subset of the genus. We then combine these data with a much larger taxonomic dataset for which only Sanger sequences are available, making this the most comprehensively sampled study in the genus to date. We show that using a phylogeny inferred from the species with plastome data as a topological constraint for the larger dataset increases the resolution of our data and produces a more robust evolutionary hypothesis for the group. We then use the resulting phylogeny to study the evolution of morphological traits thought to be important in Burmeistera, and assess their usefulness in the current taxonomic classification of the genus. The main morphological character used to delimit subgeneric sections, the presence or absence of hairs on the apex of the two ventral anthers, shows a complex evolutionary history with many changes in the tree, suggesting that this character should not be used for taxonomic classification. Although it is too soon to propose a new subgeneric classification for Burmeistera, our results highlight some morphological traits shared by whole clades that could potentially be used in future taxonomic work. (C) 2016 Elsevier Inc. All rights reserved.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Keyword
- Andes
- Bellflowers
- Character evolution
- Genome skimming
- Plastome
- Phylogenomics
- chloroplast genome sequences
- partitioning schemes
- basal angiosperms
- rates
- substitution
- alignment
- tortoise
- utility
- genes
- tool
- Biochemistry & Molecular Biology
- Evolutionary Biology
- Heredity
Publication and Content Type
- ref (subject category)
- art (subject category)
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