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Multiple origins of BBCC allopolyploid species in the rice genus (Oryza)
In the rice genus (Oryza), about one half of the species are allopolyploids. These species are not only important resources for rice breeding but also provide a unique opportunity for studying evolution of polyploid species. In the present study, we sequenced four biparentally inherited nuclear loci...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4602239/ https://www.ncbi.nlm.nih.gov/pubmed/26460928 http://dx.doi.org/10.1038/srep14876 |
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author | Zou, Xin-Hui Du, Yu-Su Tang, Liang Xu, Xin-Wei Doyle, Jeff J. Sang, Tao Ge, Song |
author_facet | Zou, Xin-Hui Du, Yu-Su Tang, Liang Xu, Xin-Wei Doyle, Jeff J. Sang, Tao Ge, Song |
author_sort | Zou, Xin-Hui |
collection | PubMed |
description | In the rice genus (Oryza), about one half of the species are allopolyploids. These species are not only important resources for rice breeding but also provide a unique opportunity for studying evolution of polyploid species. In the present study, we sequenced four biparentally inherited nuclear loci and three maternally inherited chloroplast fragments from all diploid and tetraploid species with the B- and C-genome types in this genus. We detected at least three independent origins of three BC-genome tetraploid species. Specifically, the diploid O. punctata (B-genome) and O. officinalis (C-genome) were the parental progenitors of O. minuta and O. malampuzhaensis with O. punctata being the maternal donors, whereas the diploid O. punctata and O. eichingeri (C-genome) were the progenitors of tetraploid O. punctata with O. punctata being the paternal donor. Our relaxed clock analyses suggest that all the BBCC species originated within the last one million years, which is coincident with the severe climate oscillations occurred during the last ice age, implying the potential impact of climate change on their formations and dispersals. In addition, our results support previous taxonomic arguments that the tetraploid O. punctata might be better treated as a separate species (O. schweinfurthiana). |
format | Online Article Text |
id | pubmed-4602239 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46022392015-10-23 Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) Zou, Xin-Hui Du, Yu-Su Tang, Liang Xu, Xin-Wei Doyle, Jeff J. Sang, Tao Ge, Song Sci Rep Article In the rice genus (Oryza), about one half of the species are allopolyploids. These species are not only important resources for rice breeding but also provide a unique opportunity for studying evolution of polyploid species. In the present study, we sequenced four biparentally inherited nuclear loci and three maternally inherited chloroplast fragments from all diploid and tetraploid species with the B- and C-genome types in this genus. We detected at least three independent origins of three BC-genome tetraploid species. Specifically, the diploid O. punctata (B-genome) and O. officinalis (C-genome) were the parental progenitors of O. minuta and O. malampuzhaensis with O. punctata being the maternal donors, whereas the diploid O. punctata and O. eichingeri (C-genome) were the progenitors of tetraploid O. punctata with O. punctata being the paternal donor. Our relaxed clock analyses suggest that all the BBCC species originated within the last one million years, which is coincident with the severe climate oscillations occurred during the last ice age, implying the potential impact of climate change on their formations and dispersals. In addition, our results support previous taxonomic arguments that the tetraploid O. punctata might be better treated as a separate species (O. schweinfurthiana). Nature Publishing Group 2015-10-13 /pmc/articles/PMC4602239/ /pubmed/26460928 http://dx.doi.org/10.1038/srep14876 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Zou, Xin-Hui Du, Yu-Su Tang, Liang Xu, Xin-Wei Doyle, Jeff J. Sang, Tao Ge, Song Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) |
title | Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) |
title_full | Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) |
title_fullStr | Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) |
title_full_unstemmed | Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) |
title_short | Multiple origins of BBCC allopolyploid species in the rice genus (Oryza) |
title_sort | multiple origins of bbcc allopolyploid species in the rice genus (oryza) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4602239/ https://www.ncbi.nlm.nih.gov/pubmed/26460928 http://dx.doi.org/10.1038/srep14876 |
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