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Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico

The process of hybridization occurs in approximately 40% of vascular plants, and this exchange of genetic material between non-conspecific individuals occurs unequally among plant lineages, being more frequent in certain groups such as Opuntia (Cactaceae). This genus is known for multiple taxonomic...

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Autores principales: Granados-Aguilar, Xochitl, Granados Mendoza, Carolina, Cervantes, Cristian Rafael, Montes, José Rubén, Arias, Salvador
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7838128/
https://www.ncbi.nlm.nih.gov/pubmed/33519858
http://dx.doi.org/10.3389/fpls.2020.606809
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author Granados-Aguilar, Xochitl
Granados Mendoza, Carolina
Cervantes, Cristian Rafael
Montes, José Rubén
Arias, Salvador
author_facet Granados-Aguilar, Xochitl
Granados Mendoza, Carolina
Cervantes, Cristian Rafael
Montes, José Rubén
Arias, Salvador
author_sort Granados-Aguilar, Xochitl
collection PubMed
description The process of hybridization occurs in approximately 40% of vascular plants, and this exchange of genetic material between non-conspecific individuals occurs unequally among plant lineages, being more frequent in certain groups such as Opuntia (Cactaceae). This genus is known for multiple taxonomic controversies due to widespread polyploidy and probable hybrid origin of several of its species. Southern Mexico species of this genus have been poorly studied despite their great diversity in regions such as the Tehuacán-Cuicatlán Valley which contains around 12% of recognized Mexico’s native Opuntia species. In this work, we focus on testing the hybrid status of two putative hybrids from this region, Opuntia tehuacana and Opuntia pilifera, and estimate if hybridization occurs among sampled southern opuntias using two newly identified nuclear intron markers to construct phylogenetic networks with HyDe and Dsuite and perform invariant analysis under the coalescent model with HyDe and Dsuite. For the test of hybrid origin in O. tehuacana, our results could not recover hybridization as proposed in the literature, but we found introgression into O. tehuacana individuals involving O. decumbens and O. huajuapensis. Regarding O. pilifera, we identified O. decumbens as probable parental species, supported by our analysis, which sustains the previous hybridization hypothesis between Nopalea and Basilares clades. Finally, we suggest new hybridization and introgression cases among southern Mexican species involving O. tehuantepecana and O. depressa as parental species of O. velutina and O. decumbens.
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spelling pubmed-78381282021-01-28 Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico Granados-Aguilar, Xochitl Granados Mendoza, Carolina Cervantes, Cristian Rafael Montes, José Rubén Arias, Salvador Front Plant Sci Plant Science The process of hybridization occurs in approximately 40% of vascular plants, and this exchange of genetic material between non-conspecific individuals occurs unequally among plant lineages, being more frequent in certain groups such as Opuntia (Cactaceae). This genus is known for multiple taxonomic controversies due to widespread polyploidy and probable hybrid origin of several of its species. Southern Mexico species of this genus have been poorly studied despite their great diversity in regions such as the Tehuacán-Cuicatlán Valley which contains around 12% of recognized Mexico’s native Opuntia species. In this work, we focus on testing the hybrid status of two putative hybrids from this region, Opuntia tehuacana and Opuntia pilifera, and estimate if hybridization occurs among sampled southern opuntias using two newly identified nuclear intron markers to construct phylogenetic networks with HyDe and Dsuite and perform invariant analysis under the coalescent model with HyDe and Dsuite. For the test of hybrid origin in O. tehuacana, our results could not recover hybridization as proposed in the literature, but we found introgression into O. tehuacana individuals involving O. decumbens and O. huajuapensis. Regarding O. pilifera, we identified O. decumbens as probable parental species, supported by our analysis, which sustains the previous hybridization hypothesis between Nopalea and Basilares clades. Finally, we suggest new hybridization and introgression cases among southern Mexican species involving O. tehuantepecana and O. depressa as parental species of O. velutina and O. decumbens. Frontiers Media S.A. 2021-01-13 /pmc/articles/PMC7838128/ /pubmed/33519858 http://dx.doi.org/10.3389/fpls.2020.606809 Text en Copyright © 2021 Granados-Aguilar, Granados Mendoza, Cervantes, Montes and Arias. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Granados-Aguilar, Xochitl
Granados Mendoza, Carolina
Cervantes, Cristian Rafael
Montes, José Rubén
Arias, Salvador
Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
title Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
title_full Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
title_fullStr Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
title_full_unstemmed Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
title_short Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
title_sort unraveling reticulate evolution in opuntia (cactaceae) from southern mexico
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7838128/
https://www.ncbi.nlm.nih.gov/pubmed/33519858
http://dx.doi.org/10.3389/fpls.2020.606809
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