Global genomic population structure of wild and cultivated oat reveals signatures of chromosome rearrangements

The genus Avena consists of approximately 30 wild and cultivated oat species. Cultivated oat is an important food crop, yet the broader genetic diversity within the Avena gene pool remains underexplored and underexploited. Here, we characterize over 9000 wild and cultivated hexaploid oat accessions of global origin using genotyping-by-sequencing and explore population structure using multidimensional scaling and population-based clustering methods. We also conduct analyses to reveal chromosome regions associated with local adaptation, sometimes resulting from large-scale chromosome rearrangements. We report four distinct genetic populations within the wild species A. sterilis, a distinct population of cultivated A. byzantina, and multiple populations within cultivated A. sativa. Some chromosome regions associated with local adaptation are also associated with confirmed structural rearrangements on chromosomes 1A, 1C, 3C, 4C, and 7D. This work provides evidence suggesting multiple polyploid origins, multiple domestications, and/or reproductive barriers amongst Avena populations caused by differential chromosome structure.

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Publication Details

Journal
Nature Communications
Published
2025-10-29
DOI
https://doi.org/10.1038/s41467-025-57895-3
Citations
3
Primary Topic
Wheat and Barley Genetics and Pathology
Type
article
Field-Weighted Citation Impact
5.25

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article

Global genomic population structure of wild and cultivated oat reveals signatures of chromosome rearrangements

Lucı́a Gutiérrez, Peter J. Maughan, Isabel A. del Blanco, Justin Bellavance et al.
3 citations
Nature Communications
Wheat and Barley Genetics and Pathology
5.25
article

Global genomic population structure of wild and cultivated oat reveals signatures of chromosome rearrangements

Lucı́a Gutiérrez, Peter J. Maughan, Isabel A. del Blanco, Justin Bellavance, Rajeev Gupta, Yung‐Fen Huang, Matthias Heinrich Herrmann, Eric N. Jellen, Kevin P. Smith, Kathy Esvelt Klos, Nicholas A. Tinker, David Waring, Edyta Paczos-Grzęda, Francisco J. Canales, Martin Mascher, Taner Z. Sen, Clayton L. Birkett, Craig H. Carlson, Steve Michel, Pamela Zwer, Sophie Brodführer, Tim Sutton, Aaron D. Beattie, Julio Isidro y Sánchez, Axel Diederichsen, Jean‐Luc Jannink, Yuanying Peng, Jennifer W. Mitchell Fetch, Yong‐Bi Fu, Weikai Yan, Anne Fiebig, Jason D. Fiedler, Asuka Itaya, Charlene P. Wight, Melanie Caffe, Isobel A. P. Parkin, Tim Langdon, Wubishet A. Bekele, Elena Prats, Kirby T. Nilsen, Raja Sekhar Nandety, Raz Avni, Juan David Arbelaez, Stephen A. Harrison, Yongle Li, John C. Harris, Catherine J. Howarth, Michael S. McMullen
article en
3 citations

Abstract

The genus Avena consists of approximately 30 wild and cultivated oat species. Cultivated oat is an important food crop, yet the broader genetic diversity within the Avena gene pool remains underexplored and underexploited. Here, we characterize over 9000 wild and cultivated hexaploid oat accessions of global origin using genotyping-by-sequencing and explore population structure using multidimensional scaling and population-based clustering methods. We also conduct analyses to reveal chromosome regions associated with local adaptation, sometimes resulting from large-scale chromosome rearrangements. We report four distinct genetic populations within the wild species A. sterilis, a distinct population of cultivated A. byzantina, and multiple populations within cultivated A. sativa. Some chromosome regions associated with local adaptation are also associated with confirmed structural rearrangements on chromosomes 1A, 1C, 3C, 4C, and 7D. This work provides evidence suggesting multiple polyploid origins, multiple domestications, and/or reproductive barriers amongst Avena populations caused by differential chromosome structure.

Nature CommunicationsVol. 16(1)
Brigham Young University (US), South Australia Pathology (AU), Louisiana State University (US), University of Minnesota (US), Agricultural Research Service (US), Julius Kühn-Institut (DE), Agriculture and Agri-Food Canada (CA), University of Wisconsin–Madison (US), University of Illinois Urbana-Champaign (US), University of Life Sciences in Lublin (PL), Aberystwyth University (GB), National Taiwan University (TW), South Dakota State University (US), Cornell University (US), South Australian Research and Development Institute (AU), German Centre for Integrative Biodiversity Research (DE), University of Saskatchewan (CA), Sichuan Agricultural University (CN), Department of Primary Industries and Regions South Australia (AU), Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) (DE), Western Regional Research Center (US), Instituto de Agricultura Sostenible (ES), Robert W. Holley Center for Agriculture & Health (US), Institute of Biological, Environmental and Rural Sciences (GB), Institute of Plant Genetics, Polish Academy of Sciences (PL), Edward T. Schafer Agricultural Research Center (US), Ottawa Research and Development Centre, Saskatoon Research and Development Centre, University of Manitoba (CA), The University of Adelaide (AU), North Dakota State University (US), University of California, Davis (US), Universidad Politécnica de Madrid (ES), University of California, Berkeley (US)
U.S. Department of Agriculture, North Dakota State University, Brigham Young University, University of Wisconsin-Madison, University of Minnesota, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, South Dakota State University, Louisiana State University, Aberystwyth University, Grains Research and Development Corporation, Universidad Politécnica de Madrid, Bundesministerium für Ernährung und Landwirtschaft, National Taiwan University, South Australian Research and Development Institute, Sichuan Agricultural University, Uniwersytet Przyrodniczy w Lublinie, Deutsches Zentrum für integrative Biodiversitätsforschung Halle-Jena-Leipzig, University of Illinois at Urbana-Champaign, University of California, Davis, Agricultural Research Service, Agriculture and Agri-Food Canada, Biotechnology and Biological Sciences Research Council, Leibniz-Gemeinschaft, European Regional Development Fund, Agencia Estatal de Investigación
Openalex Percentile: Top 5%
Wheat and Barley Genetics and Pathology
5.25
DOIOpen Access PDFOpenAlex
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