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The evolutionary history of the common chloroplast genome of Arabidopsis thaliana and A. suecica.

Jakobsson, Mattias LU ; Säll, Torbjörn LU ; Lind-Halldén, C and Halldén, Christer LU (2007) In Journal of Evolutionary Biology 20(1). p.104-121
Abstract
The evolutionary history of the common chloroplast (cp) genome of the allotetraploid Arabidopsis suecica and its maternal parent A. thaliana was investigated by sequencing 50 fragments of cpDNA, resulting in 98 polymorphic sites. The variation in the A. suecica sample was small, in contrast to that of the A. thaliana sample. The time to the most recent common ancestor (T-MRCA) of the A. suecica cp genome alone was estimated to be about one 37th of the T-MRCA of both the A. thaliana and A. suecica cp genomes. This corresponds to A. suecica having a MRCA between 10 000 and 50 000 years ago, suggesting that the entire species originated during, or before, this period of time, although the estimates are sensitive to assumptions made about... (More)
The evolutionary history of the common chloroplast (cp) genome of the allotetraploid Arabidopsis suecica and its maternal parent A. thaliana was investigated by sequencing 50 fragments of cpDNA, resulting in 98 polymorphic sites. The variation in the A. suecica sample was small, in contrast to that of the A. thaliana sample. The time to the most recent common ancestor (T-MRCA) of the A. suecica cp genome alone was estimated to be about one 37th of the T-MRCA of both the A. thaliana and A. suecica cp genomes. This corresponds to A. suecica having a MRCA between 10 000 and 50 000 years ago, suggesting that the entire species originated during, or before, this period of time, although the estimates are sensitive to assumptions made about population size and mutation rate. The data was also consistent with the hypothesis of A. suecica being of single origin. Isolation-by-distance and population structure in A. thaliana depended upon the geographical scale analysed; isolation-by-distance was found to be weak on the global scale but locally pronounced. Within the genealogical cp tree of A. thaliana, there were indications that the root of the A. suecica species is located among accessions of A. thaliana that come primarily from central Europe. Selective neutrality of the cp genome could not be rejected, despite the fact that it contains several completely linked protein-coding genes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
polyploidy, polymorphism, DNA sequence, chloroplast, Arabidopsis suecica, Arabidopsis thaliana, population structure, speciation, evolutionary history
in
Journal of Evolutionary Biology
volume
20
issue
1
pages
104 - 121
publisher
John Wiley & Sons
external identifiers
  • wos:000242904600019
  • scopus:33845684713
ISSN
1420-9101
DOI
10.1111/j.1420-9101.2006.01217.x
language
English
LU publication?
yes
id
f7dcf2b8-1e4a-4738-a15c-ccbad733068f (old id 165108)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=17210004&dopt=Abstract
date added to LUP
2007-07-05 10:53:58
date last changed
2017-04-09 03:33:17
@article{f7dcf2b8-1e4a-4738-a15c-ccbad733068f,
  abstract     = {The evolutionary history of the common chloroplast (cp) genome of the allotetraploid Arabidopsis suecica and its maternal parent A. thaliana was investigated by sequencing 50 fragments of cpDNA, resulting in 98 polymorphic sites. The variation in the A. suecica sample was small, in contrast to that of the A. thaliana sample. The time to the most recent common ancestor (T-MRCA) of the A. suecica cp genome alone was estimated to be about one 37th of the T-MRCA of both the A. thaliana and A. suecica cp genomes. This corresponds to A. suecica having a MRCA between 10 000 and 50 000 years ago, suggesting that the entire species originated during, or before, this period of time, although the estimates are sensitive to assumptions made about population size and mutation rate. The data was also consistent with the hypothesis of A. suecica being of single origin. Isolation-by-distance and population structure in A. thaliana depended upon the geographical scale analysed; isolation-by-distance was found to be weak on the global scale but locally pronounced. Within the genealogical cp tree of A. thaliana, there were indications that the root of the A. suecica species is located among accessions of A. thaliana that come primarily from central Europe. Selective neutrality of the cp genome could not be rejected, despite the fact that it contains several completely linked protein-coding genes.},
  author       = {Jakobsson, Mattias and Säll, Torbjörn and Lind-Halldén, C and Halldén, Christer},
  issn         = {1420-9101},
  keyword      = {polyploidy,polymorphism,DNA sequence,chloroplast,Arabidopsis suecica,Arabidopsis thaliana,population structure,speciation,evolutionary history},
  language     = {eng},
  number       = {1},
  pages        = {104--121},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {The evolutionary history of the common chloroplast genome of Arabidopsis thaliana and A. suecica.},
  url          = {http://dx.doi.org/10.1111/j.1420-9101.2006.01217.x},
  volume       = {20},
  year         = {2007},
}