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Intrageneric phylogeny of Capsella (Brassicaceae) and the origin of the tetraploid C-bursa-pastoris based on chloroplast and nuclear DNA sequences

Slotte, T. ; Ceplitis, Alf LU ; Neuffer, B. ; Hurka, H. and Lascoux, M. (2006) In American Journal of Botany 93(11). p.1714-1724
Abstract
Polyploidization, often accompanied by hybridization, has been of major importance in flowering plant evolution. Here we investigate the importance of these processes for the evolution of the tetraploid crucifer Capsella bursa-pastoris using DNA sequences from two chloroplast loci as well as from three nuclear low-copy genes. The near-absence of variation at the C. bursa-pastoris chloroplast markers suggests a single and recent origin of the tetraploid. However, despite supporting a single phylogeny, chloroplast data indicate that neither of the extant Capsella diploids is the maternal parent of the tetraploid. Combined with data from the three nuclear loci, our results do not lend support to previous hypotheses on the origin of C.... (More)
Polyploidization, often accompanied by hybridization, has been of major importance in flowering plant evolution. Here we investigate the importance of these processes for the evolution of the tetraploid crucifer Capsella bursa-pastoris using DNA sequences from two chloroplast loci as well as from three nuclear low-copy genes. The near-absence of variation at the C. bursa-pastoris chloroplast markers suggests a single and recent origin of the tetraploid. However, despite supporting a single phylogeny, chloroplast data indicate that neither of the extant Capsella diploids is the maternal parent of the tetraploid. Combined with data from the three nuclear loci, our results do not lend support to previous hypotheses on the origin of C. bursa-pastoris as an allopolyploid between the diploids C. grandiflora and C. rubella or an autopolyploid of C. grandiflora. Nevertheless, for each locus, some of the C. bursa-pastoris accessions harbored C. rubella alleles, indicating that C. rubella contributed to the gene pool of C. bursa-pastoris, either through allopolyploid speciation or, more likely, through hybridization and introgression. To our knowledge, this study is the first of a wild, nonmodel plant genus that uses a combination of chloroplast and multiple low-copy nuclear loci for phylogenetic inference of polyploid evolution. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
chloroplast DNA sequences, introgression, low-copy nuclear genes, PISTILLATA, LUMINIDEPENDENS, Capsella, Adh, Brassicaceae
in
American Journal of Botany
volume
93
issue
11
pages
1714 - 1724
publisher
Botanical Society of America
external identifiers
  • wos:000242288400015
  • scopus:33751228457
ISSN
0002-9122
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Department of Cell and Organism Biology (Closed 2011.) (011002100)
id
609f0e72-1d38-4092-9c4e-228c16b6a848 (old id 685747)
alternative location
http://www.amjbot.org/cgi/content/abstract/93/11/1714
date added to LUP
2016-04-01 17:08:02
date last changed
2021-05-11 04:43:09
@article{609f0e72-1d38-4092-9c4e-228c16b6a848,
  abstract     = {Polyploidization, often accompanied by hybridization, has been of major importance in flowering plant evolution. Here we investigate the importance of these processes for the evolution of the tetraploid crucifer Capsella bursa-pastoris using DNA sequences from two chloroplast loci as well as from three nuclear low-copy genes. The near-absence of variation at the C. bursa-pastoris chloroplast markers suggests a single and recent origin of the tetraploid. However, despite supporting a single phylogeny, chloroplast data indicate that neither of the extant Capsella diploids is the maternal parent of the tetraploid. Combined with data from the three nuclear loci, our results do not lend support to previous hypotheses on the origin of C. bursa-pastoris as an allopolyploid between the diploids C. grandiflora and C. rubella or an autopolyploid of C. grandiflora. Nevertheless, for each locus, some of the C. bursa-pastoris accessions harbored C. rubella alleles, indicating that C. rubella contributed to the gene pool of C. bursa-pastoris, either through allopolyploid speciation or, more likely, through hybridization and introgression. To our knowledge, this study is the first of a wild, nonmodel plant genus that uses a combination of chloroplast and multiple low-copy nuclear loci for phylogenetic inference of polyploid evolution.},
  author       = {Slotte, T. and Ceplitis, Alf and Neuffer, B. and Hurka, H. and Lascoux, M.},
  issn         = {0002-9122},
  language     = {eng},
  number       = {11},
  pages        = {1714--1724},
  publisher    = {Botanical Society of America},
  series       = {American Journal of Botany},
  title        = {Intrageneric phylogeny of Capsella (Brassicaceae) and the origin of the tetraploid C-bursa-pastoris based on chloroplast and nuclear DNA sequences},
  url          = {http://www.amjbot.org/cgi/content/abstract/93/11/1714},
  volume       = {93},
  year         = {2006},
}