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The chloroplast view of the evolution of polyploid wheat.
New Phytol. 2014 Nov; 204(3):704-714.NP

Abstract

Polyploid wheats comprise four species: Triticum turgidum (AABB genomes) and T. aestivum (AABBDD) in the Emmer lineage, and T. timopheevii (AAGG) and T. zhukovskyi (AAGGA(m) A(m)) in the Timopheevi lineage. Genetic relationships between chloroplast genomes were studied to trace the evolutionary history of the species. Twenty-five chloroplast genomes were sequenced, and 1127 plant accessions were genotyped, representing 13 Triticum and Aegilops species. The A. speltoides (SS genome) diverged before the divergence of T. urartu (AA), A. tauschii (DD) and the Aegilops species of the Sitopsis section. Aegilops speltoides forms a monophyletic clade with the polyploid Emmer and Timopheevi wheats, which originated within the last 0.7 and 0.4 Myr, respectively. The geographic distribution of chloroplast haplotypes of the wild tetraploid wheats and A. speltoides illustrates the possible geographic origin of the Emmer lineage in the southern Levant and the Timopheevi lineage in northern Iraq. Aegilops speltoides is the closest relative of the diploid donor of the chloroplast (cytoplasm), as well as the B and G genomes to Timopheevi and Emmer lineages. Chloroplast haplotypes were often shared by species or subspecies within major lineages and between the lineages, indicating the contribution of introgression to the evolution and domestication of polyploid wheats.

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Authors+Show Affiliations

Gornicki P
Department of Molecular Genetics and Cell Biology, University of Chicago, 920 E 58th St, Chicago, IL, 60637, USA.
Zhu H
Department of Biology and Microbiology, South Dakota State University, 252 North Plain Biostress, Brookings, SD, 57007, USA.
Wang J
Department of Biology and Microbiology, South Dakota State University, 252 North Plain Biostress, Brookings, SD, 57007, USA.
Challa GS
Department of Biology and Microbiology, South Dakota State University, 252 North Plain Biostress, Brookings, SD, 57007, USA.
Zhang Z
Department of Biology and Microbiology, South Dakota State University, 252 North Plain Biostress, Brookings, SD, 57007, USA.
Gill BS
Wheat Genetics Resource Center, Department of Plant Pathology, Kansas State University, 4024 Throckmorton Hall, Manhattan, KS, 66506, USA. Biotechnology Section, Faculty of Sciences, King Abdulaziz University, Jeddeh, Saudi Arabia.
Li W
Department of Biology and Microbiology, South Dakota State University, 252 North Plain Biostress, Brookings, SD, 57007, USA. Department of Plant Science, South Dakota State University, 247 North Plain Biostress, Brookings, SD, 57007, USA.

MeSH

Biological EvolutionChloroplastsGenetic VariationGenome, PlantGenotypePolyploidyTriticum

Pub Type(s)

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

Language

eng

PubMed ID

25059383

Citation

Gornicki, Piotr, et al. "The Chloroplast View of the Evolution of Polyploid Wheat." The New Phytologist, vol. 204, no. 3, 2014, pp. 704-714.
Gornicki P, Zhu H, Wang J, et al. The chloroplast view of the evolution of polyploid wheat. New Phytol. 2014;204(3):704-714.
Gornicki, P., Zhu, H., Wang, J., Challa, G. S., Zhang, Z., Gill, B. S., & Li, W. (2014). The chloroplast view of the evolution of polyploid wheat. The New Phytologist, 204(3), 704-714. https://doi.org/10.1111/nph.12931
Gornicki P, et al. The Chloroplast View of the Evolution of Polyploid Wheat. New Phytol. 2014;204(3):704-714. PubMed PMID: 25059383.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The chloroplast view of the evolution of polyploid wheat. AU - Gornicki,Piotr, AU - Zhu,Huilan, AU - Wang,Junwei, AU - Challa,Ghana S, AU - Zhang,Zhengzhi, AU - Gill,Bikram S, AU - Li,Wanlong, Y1 - 2014/07/24/ PY - 2014/01/10/received PY - 2014/06/07/accepted PY - 2014/7/26/entrez PY - 2014/7/26/pubmed PY - 2015/6/2/medline KW - Aegilops KW - Speltoides KW - Triticum KW - chloroplast genome KW - domestication KW - molecular evolution KW - polyploid wheat SP - 704 EP - 714 JF - The New phytologist JO - New Phytol VL - 204 IS - 3 N2 - Polyploid wheats comprise four species: Triticum turgidum (AABB genomes) and T. aestivum (AABBDD) in the Emmer lineage, and T. timopheevii (AAGG) and T. zhukovskyi (AAGGA(m) A(m)) in the Timopheevi lineage. Genetic relationships between chloroplast genomes were studied to trace the evolutionary history of the species. Twenty-five chloroplast genomes were sequenced, and 1127 plant accessions were genotyped, representing 13 Triticum and Aegilops species. The A. speltoides (SS genome) diverged before the divergence of T. urartu (AA), A. tauschii (DD) and the Aegilops species of the Sitopsis section. Aegilops speltoides forms a monophyletic clade with the polyploid Emmer and Timopheevi wheats, which originated within the last 0.7 and 0.4 Myr, respectively. The geographic distribution of chloroplast haplotypes of the wild tetraploid wheats and A. speltoides illustrates the possible geographic origin of the Emmer lineage in the southern Levant and the Timopheevi lineage in northern Iraq. Aegilops speltoides is the closest relative of the diploid donor of the chloroplast (cytoplasm), as well as the B and G genomes to Timopheevi and Emmer lineages. Chloroplast haplotypes were often shared by species or subspecies within major lineages and between the lineages, indicating the contribution of introgression to the evolution and domestication of polyploid wheats. SN - 1469-8137 UR - https://www.unboundmedicine.com/medline/citation/25059383/The_chloroplast_view_of_the_evolution_of_polyploid_wheat_ DB - PRIME DP - Unbound Medicine ER -