- THIS ARTICLE
- Full Text
- Full Text (PDF)
- Data Supplement
-
All Versions of this Article:
genetics.104.039057v1
171/4/1933 most recent - Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Email this article to a friend
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via HighWire
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Burke, J. M.
- Articles by Rieseberg, L. H.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Burke, J. M.
- Articles by Rieseberg, L. H.
Originally published as Genetics Published Articles Ahead of Print on June 18, 2005.
Genetics, Vol. 171, 1933-1940, December 2005, Copyright © 2005
doi:10.1534/genetics.104.039057
Genetic Consequences of Selection During the Evolution of Cultivated Sunflower
John M. Burke*,1,
Steven J. Knapp
and
Loren H. Rieseberg
* Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee 37235, Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia 30602 and Department of Biology, Indiana University, Bloomington, Indiana 47405
1 Corresponding author: Vanderbilt University, Department of Biological Sciences, VU Station B 351634, Nashville, TN 37235.
E-mail: john.m.burke{at}vanderbilt.edu
We mapped quantitative trait loci (QTL) controlling differences in seed oil content and composition between cultivated and wild sunflower and used the results, along with those of a previous study of domestication-related QTL, to guide a genome-wide analysis of genetic variation for evidence of past selection. The effects of the seed oil QTL were almost exclusively in the expected direction with respect to the parental phenotypes. A major, oil-related QTL cluster mapped near a cluster of domestication-related QTL on linkage group six (LG06), the majority of which have previously been shown to have effects that are inconsistent with the parental phenotypes. To test the hypothesis that this region was the target of a past selective sweep, perhaps resulting in the fixation of the antagonistic domestication-related QTL, we analyzed simple sequence repeat (SSR) diversity from 102 markers dispersed throughout the sunflower genome. Our results indicate that LG06 was most likely the target of multiple selective sweeps during the postdomestication era. Strong directional selection in concert with genetic hitchhiking therefore offers a possible explanation for the occurrence of numerous domestication-related QTL with apparently maladaptive phenotypic effects.
This article has been cited by other articles:
 |
|
 |
|
  M. A. Chapman, C. H. Pashley, J. Wenzler, J. Hvala, S. Tang, S. J. Knapp, and J. M. Burke A Genomic Scan for Selection Reveals Candidates for Genes Involved in the Evolution of Cultivated Sunflower (Helianthus annuus) PLANT CELL, November 1, 2008; 20(11): 2931 - 2945. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. C. Burger, M. A. Chapman, and J. M. Burke Molecular insights into the evolution of crop plants Am. J. Botany, February 1, 2008; 95(2): 113 - 122. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. M. Kolkman, S. T. Berry, A. J. Leon, M. B. Slabaugh, S. Tang, W. Gao, D. K. Shintani, J. M. Burke, and S. J. Knapp Single Nucleotide Polymorphisms and Linkage Disequilibrium in Sunflower Genetics, September 1, 2007; 177(1): 457 - 468. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. M. Wills and J. M. Burke Quantitative Trait Locus Analysis of the Early Domestication of Sunflower Genetics, August 1, 2007; 176(4): 2589 - 2599. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Liu and J. M. Burke Patterns of Nucleotide Diversity in Wild and Cultivated Sunflower Genetics, May 1, 2006; 173(1): 321 - 330. [Abstract] [Full Text] [PDF]
|
|