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The chloroplast view of the evolution of polyploid wheat.
. 2014 Nov; 204(3):704-14.

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.

Authors+Show Affiliations

Department of Molecular Genetics and Cell Biology, University of Chicago, 920 E 58th St, Chicago, IL, 60637, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

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. 704-14.
Gornicki P, Zhu H, Wang J, et al. The chloroplast view of the evolution of polyploid wheat. New Phytol. 2014;204(3):704-14.
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), 704-14. 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):704-14. 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 - 14 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_ L2 - https://doi.org/10.1111/nph.12931 DB - PRIME DP - Unbound Medicine ER -