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Evidence for a large‐scale population structure among accessions of Arabidopsis thaliana: possible causes and consequences for the distribution of linkage disequilibrium
Abstract
The existence of a large‐scale population structure was investigated in Arabidopsis thaliana by studying patterns of polymorphism in a set of 71 European accessions. We used sequence polymorphism surveyed in 10 fragments of ∼600 nucleotides and a set of nine microsatellite markers. Population structure was investigated using a model‐based inference framework. Among the accessions studied, the presence of four groups was inferred using genetic data, without using prior information on the geographical origin of the accessions. Significant genetic isolation by geographical distance was detected at the group level, together with a geographical gradient in allelic richness across groups. These results are discussed with respect to the previously proposed scenario of postglacial colonization of Europe from putative glacial refugia. Finally, the contribution of the inferred structure to linkage disequilibrium among 171 pairs of essentially unlinked markers was also investigated. Linkage disequilibrium analysis revealed that significant associations detected in the whole sample were mainly due to genetic differentiation among the inferred groups. We discuss the implication of this finding for future association studies in A. thaliana.
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Bacanu, S.-A., Devlin, B., & Roeder, K. (2000) · The American Journal of Human Genetics · doi:10.1086/302929 · Cited by 340 · cited 2×
“…a review), this finding also suggests that methods for performing tests of association that account for genetic stratification (see, for instance, Bacanu et al. 2000; Pritchard et al. 2000b) should be mandatory when performing association mapping studies on a large geographical scale in A.…”
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Cited by
Status and prospects of genome‐wide association studies in plants
Tibbs Cortes, L., Zhang, Z., & Yu, J. (2021) · The Plant Genome · doi:10.1002/tpg2.20077 · Cited by 470
Moore, J. H., & Williams, S. M. (2005) · BioEssays · doi:10.1002/bies.20236 · Cited by 340
FONTANILLAS, P., LANDRY, C. R., WITTKOPP, P. J., RUSS, C., GRUBER, J. D., NUSBAUM, C., & HARTL, D. L. (2010) · Molecular Ecology · doi:10.1111/j.1365-294x.2010.04472.x · Cited by 76
More powerful genetic association testing via a new statistical framework for integrative genomics
Zhao, S. D., Cai, T. T., & Li, H. (2014) · Biometrics · doi:10.1111/biom.12206 · Cited by 31
Metadata
- Authors
- OSTROWSKI, M., DAVID, J., SANTONI, S., MCKHANN, H., REBOUD, X., LE CORRE, V., CAMILLERI, C., BRUNEL, D., BOUCHEZ, D., FAURE, B., & BATAILLON, T.
- Venue
- Molecular Ecology
- Publisher
- Wiley
- Published
- 2006-04-13
- Volume
- 15
- Issue
- 6
- Pages
- 1507-1517
- ISSN
- 0962-1083 (ISSN-L)
- 1365-294X
- OpenAlex
- W2124046322
- Cited by
- 197
- References
- 1
- FWCI
- 10.60
- Type
- journal article
- Language
- en
- Open access
- closed
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- OSTROWSKI, M., DAVID, J., SANTONI, S., MCKHANN, H., REBOUD, X., LE CORRE, V., CAMILLERI, C., BRUNEL, D., BOUCHEZ, D., FAURE, B., & BATAILLON, T. (2006). Evidence for a large‐scale population structure among accessions of Arabidopsis thaliana: possible causes and consequences for the distribution of linkage disequilibrium. Molecular Ecology. https://doi.org/10.1111/j.1365-294x.2006.02865.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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