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Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis
Polyploidization may precipitate dramatic changes to the genome, including chromosome rearrangements, gene loss, and changes in gene expression. In dioecious plants, the sex-determining mechanism may also be disrupted by polyploidization, with the potential evolution of hermaphroditism. However, whi...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9292114/ https://www.ncbi.nlm.nih.gov/pubmed/35793353 http://dx.doi.org/10.1371/journal.pgen.1010226 |
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author | Toups, Melissa A. Vicoso, Beatriz Pannell, John R. |
author_facet | Toups, Melissa A. Vicoso, Beatriz Pannell, John R. |
author_sort | Toups, Melissa A. |
collection | PubMed |
description | Polyploidization may precipitate dramatic changes to the genome, including chromosome rearrangements, gene loss, and changes in gene expression. In dioecious plants, the sex-determining mechanism may also be disrupted by polyploidization, with the potential evolution of hermaphroditism. However, while dioecy appears to have persisted through a ploidy transition in some species, it is unknown whether the newly formed polyploid maintained its sex-determining system uninterrupted, or whether dioecy re-evolved after a period of hermaphroditism. Here, we develop a bioinformatic pipeline using RNA-sequencing data from natural populations to demonstrate that the allopolyploid plant Mercurialis canariensis directly inherited its sex-determining region from one of its diploid progenitor species, M. annua, and likely remained dioecious through the transition. The sex-determining region of M. canariensis is smaller than that of its diploid progenitor, suggesting that the non-recombining region of M. annua expanded subsequent to the polyploid origin of M. canariensis. Homeologous pairs show partial sexual subfunctionalization. We discuss the possibility that gene duplicates created by polyploidization might contribute to resolving sexual antagonism. |
format | Online Article Text |
id | pubmed-9292114 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-92921142022-07-19 Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis Toups, Melissa A. Vicoso, Beatriz Pannell, John R. PLoS Genet Research Article Polyploidization may precipitate dramatic changes to the genome, including chromosome rearrangements, gene loss, and changes in gene expression. In dioecious plants, the sex-determining mechanism may also be disrupted by polyploidization, with the potential evolution of hermaphroditism. However, while dioecy appears to have persisted through a ploidy transition in some species, it is unknown whether the newly formed polyploid maintained its sex-determining system uninterrupted, or whether dioecy re-evolved after a period of hermaphroditism. Here, we develop a bioinformatic pipeline using RNA-sequencing data from natural populations to demonstrate that the allopolyploid plant Mercurialis canariensis directly inherited its sex-determining region from one of its diploid progenitor species, M. annua, and likely remained dioecious through the transition. The sex-determining region of M. canariensis is smaller than that of its diploid progenitor, suggesting that the non-recombining region of M. annua expanded subsequent to the polyploid origin of M. canariensis. Homeologous pairs show partial sexual subfunctionalization. We discuss the possibility that gene duplicates created by polyploidization might contribute to resolving sexual antagonism. Public Library of Science 2022-07-06 /pmc/articles/PMC9292114/ /pubmed/35793353 http://dx.doi.org/10.1371/journal.pgen.1010226 Text en © 2022 Toups et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Toups, Melissa A. Vicoso, Beatriz Pannell, John R. Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis |
title | Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis |
title_full | Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis |
title_fullStr | Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis |
title_full_unstemmed | Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis |
title_short | Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis |
title_sort | dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus mercurialis |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9292114/ https://www.ncbi.nlm.nih.gov/pubmed/35793353 http://dx.doi.org/10.1371/journal.pgen.1010226 |
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