The complex geography of domestication of the African rice Oryza glaberrima
While the domestication history of Asian rice has been extensively studied, details of the evolution of African rice remain elusive. The inner Niger delta has been suggested as the center of origin but molecular data to support this hypothesis is lacking. Here, we present a comprehensive analysis of...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Public Library of Science
2019
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| Acceso en línea: | https://hdl.handle.net/10568/164715 |
| _version_ | 1855532459922292736 |
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| author | Choi, Jae Young Zaidem, Maricris Gutaker, Rafal Dorph, Katherine Singh, Rakesh Kumar Purugganan, Michael D. |
| author_browse | Choi, Jae Young Dorph, Katherine Gutaker, Rafal Purugganan, Michael D. Singh, Rakesh Kumar Zaidem, Maricris |
| author_facet | Choi, Jae Young Zaidem, Maricris Gutaker, Rafal Dorph, Katherine Singh, Rakesh Kumar Purugganan, Michael D. |
| author_sort | Choi, Jae Young |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | While the domestication history of Asian rice has been extensively studied, details of the evolution of African rice remain elusive. The inner Niger delta has been suggested as the center of origin but molecular data to support this hypothesis is lacking. Here, we present a comprehensive analysis of the evolutionary and domestication history of African rice. By analyzing whole genome re-sequencing data from 282 individuals of domesticated African rice Oryza glaberrima and its progenitor O. barthii, we hypothesize a non-centric (i.e. multiregional) domestication origin for African rice. Our analyses showed genetic structure within O. glaberrima that has a geographical association. Furthermore, we have evidence that the previously hypothesized O. barthii progenitor populations in West Africa have evolutionary signatures similar to domesticated rice and carried causal domestication mutations, suggesting those progenitors were either mislabeled or may actually represent feral wild-domesticated hybrids. Phylogeographic analysis of genes involved in the core domestication process suggests that the origins of causal domestication mutations could be traced to wild progenitors in multiple different locations in West and Central Africa. In addition, measurements of panicle threshability, a key early domestication trait for seed shattering, were consistent with the gene phylogeographic results. We suggest seed non-shattering was selected from multiple genotypes, possibly arising from different geographical regions. Based on our evidence, O. glaberrima was not domesticated from a single centric location but was a result of diffuse process where multiple regions contributed key alleles for different domestication traits. |
| format | Journal Article |
| id | CGSpace164715 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Public Library of Science |
| publisherStr | Public Library of Science |
| record_format | dspace |
| spelling | CGSpace1647152024-12-19T14:13:06Z The complex geography of domestication of the African rice Oryza glaberrima Choi, Jae Young Zaidem, Maricris Gutaker, Rafal Dorph, Katherine Singh, Rakesh Kumar Purugganan, Michael D. While the domestication history of Asian rice has been extensively studied, details of the evolution of African rice remain elusive. The inner Niger delta has been suggested as the center of origin but molecular data to support this hypothesis is lacking. Here, we present a comprehensive analysis of the evolutionary and domestication history of African rice. By analyzing whole genome re-sequencing data from 282 individuals of domesticated African rice Oryza glaberrima and its progenitor O. barthii, we hypothesize a non-centric (i.e. multiregional) domestication origin for African rice. Our analyses showed genetic structure within O. glaberrima that has a geographical association. Furthermore, we have evidence that the previously hypothesized O. barthii progenitor populations in West Africa have evolutionary signatures similar to domesticated rice and carried causal domestication mutations, suggesting those progenitors were either mislabeled or may actually represent feral wild-domesticated hybrids. Phylogeographic analysis of genes involved in the core domestication process suggests that the origins of causal domestication mutations could be traced to wild progenitors in multiple different locations in West and Central Africa. In addition, measurements of panicle threshability, a key early domestication trait for seed shattering, were consistent with the gene phylogeographic results. We suggest seed non-shattering was selected from multiple genotypes, possibly arising from different geographical regions. Based on our evidence, O. glaberrima was not domesticated from a single centric location but was a result of diffuse process where multiple regions contributed key alleles for different domestication traits. 2019-03-07 2024-12-19T12:54:13Z 2024-12-19T12:54:13Z Journal Article https://hdl.handle.net/10568/164715 en Open Access Public Library of Science Choi, Jae Young; Zaidem, Maricris; Gutaker, Rafal; Dorph, Katherine; Singh, Rakesh Kumar and Purugganan, Michael D. 2019. The complex geography of domestication of the African rice Oryza glaberrima. PLoS Genet, Volume 15 no. 3 p. e1007414 |
| spellingShingle | Choi, Jae Young Zaidem, Maricris Gutaker, Rafal Dorph, Katherine Singh, Rakesh Kumar Purugganan, Michael D. The complex geography of domestication of the African rice Oryza glaberrima |
| title | The complex geography of domestication of the African rice Oryza glaberrima |
| title_full | The complex geography of domestication of the African rice Oryza glaberrima |
| title_fullStr | The complex geography of domestication of the African rice Oryza glaberrima |
| title_full_unstemmed | The complex geography of domestication of the African rice Oryza glaberrima |
| title_short | The complex geography of domestication of the African rice Oryza glaberrima |
| title_sort | complex geography of domestication of the african rice oryza glaberrima |
| url | https://hdl.handle.net/10568/164715 |
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