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Aegilops tauschii single nucleotide polymorphisms shed light on the origins of wheat D-genome genetic diversity and pinpoint the geographic origin of hexaploid wheat.
New Phytol. 2013 May; 198(3):925-937.NP

Abstract

Hexaploid wheat (Triticum aestivum, genomes AABBDD) originated by hybridization of tetraploid Triticum turgidum (genomes AABB) with Aegilops tauschii (genomes DD). Genetic relationships between A. tauschii and the wheat D genome are of central importance for the understanding of wheat origin and subsequent evolution. Genetic relationships among 477 A. tauschii and wheat accessions were studied with the A. tauschii 10K Infinium single nucleotide polymorphism (SNP) array. Aegilops tauschii consists of two lineages (designated 1 and 2) having little genetic contact. Each lineage consists of two closely related sublineages. A population within lineage 2 in the southwestern and southern Caspian appears to be the main source of the wheat D genome. Lineage 1 contributed as little as 0.8% of the wheat D genome. Triticum aestivum is subdivided into the western and Far Eastern populations. The Far Eastern population conserved the genetic make-up of the nascent T. aestivum more than the western population. In wheat, diversity is high in chromosomes 1D and 2D and it correlates in all wheat D-genome and A. tauschii chromosomes with recombination rates. Gene flow from A. tauschii was an important source of wheat genetic diversity and shaped its distribution along the D-genome chromosomes.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Wang J
Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, 611130, China. Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
Luo MC
Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
Chen Z
Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, 611130, China. Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
You FM
Department of Plant Sciences, University of California, Davis, CA, 95616, USA. Cereal Research Centre, Agriculture and Agri-Food Canada, Winnipeg, MB R3T 2M9, Canada.
Wei Y
Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, 611130, China.
Zheng Y
Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, 611130, China.
Dvorak J
Department of Plant Sciences, University of California, Davis, CA, 95616, USA.

MeSH

Chromosomes, PlantGenetic VariationGenome, PlantHaplotypesPhylogenyPoaceaePolymorphism, Single NucleotidePolyploidyTriticum

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

23374069

Citation

Wang, Jirui, et al. "Aegilops Tauschii Single Nucleotide Polymorphisms Shed Light On the Origins of Wheat D-genome Genetic Diversity and Pinpoint the Geographic Origin of Hexaploid Wheat." The New Phytologist, vol. 198, no. 3, 2013, pp. 925-937.
Wang J, Luo MC, Chen Z, et al. Aegilops tauschii single nucleotide polymorphisms shed light on the origins of wheat D-genome genetic diversity and pinpoint the geographic origin of hexaploid wheat. New Phytol. 2013;198(3):925-937.
Wang, J., Luo, M. C., Chen, Z., You, F. M., Wei, Y., Zheng, Y., & Dvorak, J. (2013). Aegilops tauschii single nucleotide polymorphisms shed light on the origins of wheat D-genome genetic diversity and pinpoint the geographic origin of hexaploid wheat. The New Phytologist, 198(3), 925-937. https://doi.org/10.1111/nph.12164
Wang J, et al. Aegilops Tauschii Single Nucleotide Polymorphisms Shed Light On the Origins of Wheat D-genome Genetic Diversity and Pinpoint the Geographic Origin of Hexaploid Wheat. New Phytol. 2013;198(3):925-937. PubMed PMID: 23374069.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Aegilops tauschii single nucleotide polymorphisms shed light on the origins of wheat D-genome genetic diversity and pinpoint the geographic origin of hexaploid wheat. AU - Wang,Jirui, AU - Luo,Ming-Cheng, AU - Chen,Zhongxu, AU - You,Frank M, AU - Wei,Yuming, AU - Zheng,Youliang, AU - Dvorak,Jan, Y1 - 2013/02/04/ PY - 2012/10/04/received PY - 2012/12/22/accepted PY - 2013/2/5/entrez PY - 2013/2/5/pubmed PY - 2013/12/16/medline SP - 925 EP - 937 JF - The New phytologist JO - New Phytol VL - 198 IS - 3 N2 - Hexaploid wheat (Triticum aestivum, genomes AABBDD) originated by hybridization of tetraploid Triticum turgidum (genomes AABB) with Aegilops tauschii (genomes DD). Genetic relationships between A. tauschii and the wheat D genome are of central importance for the understanding of wheat origin and subsequent evolution. Genetic relationships among 477 A. tauschii and wheat accessions were studied with the A. tauschii 10K Infinium single nucleotide polymorphism (SNP) array. Aegilops tauschii consists of two lineages (designated 1 and 2) having little genetic contact. Each lineage consists of two closely related sublineages. A population within lineage 2 in the southwestern and southern Caspian appears to be the main source of the wheat D genome. Lineage 1 contributed as little as 0.8% of the wheat D genome. Triticum aestivum is subdivided into the western and Far Eastern populations. The Far Eastern population conserved the genetic make-up of the nascent T. aestivum more than the western population. In wheat, diversity is high in chromosomes 1D and 2D and it correlates in all wheat D-genome and A. tauschii chromosomes with recombination rates. Gene flow from A. tauschii was an important source of wheat genetic diversity and shaped its distribution along the D-genome chromosomes. SN - 1469-8137 UR - https://www.unboundmedicine.com/medline/citation/23374069/Aegilops_tauschii_single_nucleotide_polymorphisms_shed_light_on_the_origins_of_wheat_D_genome_genetic_diversity_and_pinpoint_the_geographic_origin_of_hexaploid_wheat_ L2 - https://doi.org/10.1111/nph.12164 DB - PRIME DP - Unbound Medicine ER -