08-18-2024, 10:50 PM
Origin and evolution of the bread wheat D genome
Emile Cavalet-Giorsa, Andrea González-Muñoz, Naveenkumar Athiyannan, Samuel Holden, Adil Salhi, Catherine Gardener, Jesús Quiroz-Chávez, Samira M. Rustamova, Ahmed Fawzy Elkot, Mehran Patpour, Awais Rasheed, Long Mao, Evans S. Lagudah, Sambasivam K. Periyannan, Amir Sharon, Axel Himmelbach, Jochen C. Reif, Manuela Knauft, Martin Mascher, Nils Stein, Noam Chayut, Sreya Ghosh, Dragan Perovic, Alexander Putra, Ana B. Perera, Chia-Yi Hu, Guotai Yu, Hanin Ibrahim Ahmed, Konstanze D. Laquai, Luis F. Rivera, Renjie Chen, Yajun Wang, Xin Gao, Sanzhen Liu, W. John Raupp, Eric L. Olson, Jong-Yeol Lee, Parveen Chhuneja, Satinder Kaur, Peng Zhang, Robert F. Park, Yi Ding, Deng-Cai Liu, Wanlong Li, Firuza Y. Nasyrova, Jan Dvorak, Mehrdad Abbasi, Meng Li, Naveen Kumar, Wilku B. Meyer, Willem H. P. Boshoff, Brian J. Steffenson, Oadi Matny, Parva K. Sharma, Vijay K. Tiwari, Surbhi Grewal, Curtis J. Pozniak, Harmeet Singh Chawla, Jennifer Ens, Luke T. Dunning, James A. Kolmer, Gerard R. Lazo, Steven S. Xu, Yong Q. Gu, Xianyang Xu, Cristobal Uauy, Michael Abrouk, Salim Bougouffa, Gurcharn S. Brar, Brande B. H. Wulff & Simon G. Krattinger
Nature (2024)
Abstract
Bread wheat (Triticum aestivum) is a globally dominant crop and major source of calories and proteins for the human diet. Compared with its wild ancestors, modern bread wheat shows lower genetic diversity, caused by polyploidisation, domestication and breeding bottlenecks1,2. Wild wheat relatives represent genetic reservoirs, and harbour diversity and beneficial alleles that have not been incorporated into bread wheat. Here we establish and analyse extensive genome resources for Tausch’s goatgrass (Aegilops tauschii), the donor of the bread wheat D genome. Our analysis of 46 Ae. tauschii genomes enabled us to clone a disease resistance gene and perform haplotype analysis across a complex disease resistance locus, allowing us to discern alleles from paralogous gene copies. We also reveal the complex genetic composition and history of the bread wheat D genome, which involves contributions from genetically and geographically discrete Ae. tauschii subpopulations. Together, our results reveal the complex history of the bread wheat D genome and demonstrate the potential of wild relatives in crop improvement.
This hybridization that gave rise to bread wheat most probably occurred along the southern shores of the Caspian Sea 8,000–11,000 years ago5,6. Polyploidization and domestication events such as the origin of bread wheat represent extreme genetic bottlenecks1,2,7,8. In the case of bread wheat, recurrent hybridizations with wild wheat relatives and other domesticated wheat species have significantly increased genetic diversity following domestication2,9,10,11,12,13. The underlying gene flow contributed to the adaptability of bread wheat to diverse climatic conditions outside the Fertile Crescent, the geographical region where wheat was domesticated
https://www.nature.com/articles/s41586-024-07808-z
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My opinion:
The CIHG population that domesticated and gave rise to bread wheat in Northern Iran was a major motor in the Indo-European expansion and I am thinking in all Y-DNA J1 Caspian branches associated to J1-L620 local branches driving forces.
Emile Cavalet-Giorsa, Andrea González-Muñoz, Naveenkumar Athiyannan, Samuel Holden, Adil Salhi, Catherine Gardener, Jesús Quiroz-Chávez, Samira M. Rustamova, Ahmed Fawzy Elkot, Mehran Patpour, Awais Rasheed, Long Mao, Evans S. Lagudah, Sambasivam K. Periyannan, Amir Sharon, Axel Himmelbach, Jochen C. Reif, Manuela Knauft, Martin Mascher, Nils Stein, Noam Chayut, Sreya Ghosh, Dragan Perovic, Alexander Putra, Ana B. Perera, Chia-Yi Hu, Guotai Yu, Hanin Ibrahim Ahmed, Konstanze D. Laquai, Luis F. Rivera, Renjie Chen, Yajun Wang, Xin Gao, Sanzhen Liu, W. John Raupp, Eric L. Olson, Jong-Yeol Lee, Parveen Chhuneja, Satinder Kaur, Peng Zhang, Robert F. Park, Yi Ding, Deng-Cai Liu, Wanlong Li, Firuza Y. Nasyrova, Jan Dvorak, Mehrdad Abbasi, Meng Li, Naveen Kumar, Wilku B. Meyer, Willem H. P. Boshoff, Brian J. Steffenson, Oadi Matny, Parva K. Sharma, Vijay K. Tiwari, Surbhi Grewal, Curtis J. Pozniak, Harmeet Singh Chawla, Jennifer Ens, Luke T. Dunning, James A. Kolmer, Gerard R. Lazo, Steven S. Xu, Yong Q. Gu, Xianyang Xu, Cristobal Uauy, Michael Abrouk, Salim Bougouffa, Gurcharn S. Brar, Brande B. H. Wulff & Simon G. Krattinger
Nature (2024)
Abstract
Bread wheat (Triticum aestivum) is a globally dominant crop and major source of calories and proteins for the human diet. Compared with its wild ancestors, modern bread wheat shows lower genetic diversity, caused by polyploidisation, domestication and breeding bottlenecks1,2. Wild wheat relatives represent genetic reservoirs, and harbour diversity and beneficial alleles that have not been incorporated into bread wheat. Here we establish and analyse extensive genome resources for Tausch’s goatgrass (Aegilops tauschii), the donor of the bread wheat D genome. Our analysis of 46 Ae. tauschii genomes enabled us to clone a disease resistance gene and perform haplotype analysis across a complex disease resistance locus, allowing us to discern alleles from paralogous gene copies. We also reveal the complex genetic composition and history of the bread wheat D genome, which involves contributions from genetically and geographically discrete Ae. tauschii subpopulations. Together, our results reveal the complex history of the bread wheat D genome and demonstrate the potential of wild relatives in crop improvement.
This hybridization that gave rise to bread wheat most probably occurred along the southern shores of the Caspian Sea 8,000–11,000 years ago5,6. Polyploidization and domestication events such as the origin of bread wheat represent extreme genetic bottlenecks1,2,7,8. In the case of bread wheat, recurrent hybridizations with wild wheat relatives and other domesticated wheat species have significantly increased genetic diversity following domestication2,9,10,11,12,13. The underlying gene flow contributed to the adaptability of bread wheat to diverse climatic conditions outside the Fertile Crescent, the geographical region where wheat was domesticated
https://www.nature.com/articles/s41586-024-07808-z
-----------------------
My opinion:
The CIHG population that domesticated and gave rise to bread wheat in Northern Iran was a major motor in the Indo-European expansion and I am thinking in all Y-DNA J1 Caspian branches associated to J1-L620 local branches driving forces.