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Discovery and characterization of sweetpotato’s closest tetraploid relative

The origin of sweetpotato, a hexaploid species, is poorly understood, partly because the identity of its tetraploid progenitor remains unknown. In this study, we identify, describe and characterize a new species of Ipomoea that is sweetpotato’s closest tetraploid relative known to date and probably...

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Detalles Bibliográficos
Autores principales: Muñoz‐Rodríguez, Pablo, Wells, Tom, Wood, John R. I., Carruthers, Tom, Anglin, Noelle L., Jarret, Robert L., Scotland, Robert W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9306577/
https://www.ncbi.nlm.nih.gov/pubmed/35064679
http://dx.doi.org/10.1111/nph.17991
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author Muñoz‐Rodríguez, Pablo
Wells, Tom
Wood, John R. I.
Carruthers, Tom
Anglin, Noelle L.
Jarret, Robert L.
Scotland, Robert W.
author_facet Muñoz‐Rodríguez, Pablo
Wells, Tom
Wood, John R. I.
Carruthers, Tom
Anglin, Noelle L.
Jarret, Robert L.
Scotland, Robert W.
author_sort Muñoz‐Rodríguez, Pablo
collection PubMed
description The origin of sweetpotato, a hexaploid species, is poorly understood, partly because the identity of its tetraploid progenitor remains unknown. In this study, we identify, describe and characterize a new species of Ipomoea that is sweetpotato’s closest tetraploid relative known to date and probably a direct descendant of its tetraploid progenitor. We integrate morphological, phylogenetic, and genomic analyses of herbarium and germplasm accessions of the hexaploid sweetpotato, its closest known diploid relative Ipomoea trifida, and various tetraploid plants closely related to them from across the American continent. We identify wild autotetraploid plants from Ecuador that are morphologically distinct from Ipomoea batatas and I. trifida, but monophyletic and sister to I. batatas in phylogenetic analysis of nuclear data. We describe this new species as Ipomoea aequatoriensis T. Wells & P. Muñoz sp. nov., distinguish it from hybrid tetraploid material collected in Mexico; and show that it likely played a direct role in the origin of sweetpotato’s hexaploid genome. This discovery transforms our understanding of sweetpotato’s origin.
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spelling pubmed-93065772022-07-28 Discovery and characterization of sweetpotato’s closest tetraploid relative Muñoz‐Rodríguez, Pablo Wells, Tom Wood, John R. I. Carruthers, Tom Anglin, Noelle L. Jarret, Robert L. Scotland, Robert W. New Phytol Research The origin of sweetpotato, a hexaploid species, is poorly understood, partly because the identity of its tetraploid progenitor remains unknown. In this study, we identify, describe and characterize a new species of Ipomoea that is sweetpotato’s closest tetraploid relative known to date and probably a direct descendant of its tetraploid progenitor. We integrate morphological, phylogenetic, and genomic analyses of herbarium and germplasm accessions of the hexaploid sweetpotato, its closest known diploid relative Ipomoea trifida, and various tetraploid plants closely related to them from across the American continent. We identify wild autotetraploid plants from Ecuador that are morphologically distinct from Ipomoea batatas and I. trifida, but monophyletic and sister to I. batatas in phylogenetic analysis of nuclear data. We describe this new species as Ipomoea aequatoriensis T. Wells & P. Muñoz sp. nov., distinguish it from hybrid tetraploid material collected in Mexico; and show that it likely played a direct role in the origin of sweetpotato’s hexaploid genome. This discovery transforms our understanding of sweetpotato’s origin. John Wiley and Sons Inc. 2022-02-08 2022-05 /pmc/articles/PMC9306577/ /pubmed/35064679 http://dx.doi.org/10.1111/nph.17991 Text en © 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Muñoz‐Rodríguez, Pablo
Wells, Tom
Wood, John R. I.
Carruthers, Tom
Anglin, Noelle L.
Jarret, Robert L.
Scotland, Robert W.
Discovery and characterization of sweetpotato’s closest tetraploid relative
title Discovery and characterization of sweetpotato’s closest tetraploid relative
title_full Discovery and characterization of sweetpotato’s closest tetraploid relative
title_fullStr Discovery and characterization of sweetpotato’s closest tetraploid relative
title_full_unstemmed Discovery and characterization of sweetpotato’s closest tetraploid relative
title_short Discovery and characterization of sweetpotato’s closest tetraploid relative
title_sort discovery and characterization of sweetpotato’s closest tetraploid relative
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9306577/
https://www.ncbi.nlm.nih.gov/pubmed/35064679
http://dx.doi.org/10.1111/nph.17991
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