Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping
The hexaploid sweetpotato (Ipomoea batatas (L.) Lam., 2n = 6x = 90) is an important staple food crop worldwide and plays a vital role in alleviating famine in developing countries. Due to its high ploidy level, genetic studies in sweetpotato lag behind major diploid crops significantly. We built an...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/107430 |
| _version_ | 1855541257294577664 |
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| author | Mollinari, M. Olukolu, B.A. Silva Pereira, G. da Khan, A. Gemenet, D. Yencho, George Craig Zeng, Z.B. |
| author_browse | Gemenet, D. Khan, A. Mollinari, M. Olukolu, B.A. Silva Pereira, G. da Yencho, George Craig Zeng, Z.B. |
| author_facet | Mollinari, M. Olukolu, B.A. Silva Pereira, G. da Khan, A. Gemenet, D. Yencho, George Craig Zeng, Z.B. |
| author_sort | Mollinari, M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The hexaploid sweetpotato (Ipomoea batatas (L.) Lam., 2n = 6x = 90) is an important staple food crop worldwide and plays a vital role in alleviating famine in developing countries. Due to its high ploidy level, genetic studies in sweetpotato lag behind major diploid crops significantly. We built an ultra-dense multilocus integrated genetic map and characterized the inheritance system in a sweetpotato full-sib family using our newly developed software, MAPpoly. The resulting genetic map revealed 96.5% collinearity between I. batatas and its diploid relative I. trifida. We computed the genotypic probabilities across the whole genome for all individuals in the mapping population and inferred their complete hexaploid haplotypes. We provide evidence that most of the meiotic configurations (73.3%) were resolved in bivalents, although a small portion of multivalent signatures (15.7%), among other inconclusive configurations (11.0%), were also observed. Except for low levels of preferential pairing in linkage group 2, we observed a hexasomic inheritance mechanism in all linkage groups. We propose that the hexasomic-bivalent inheritance promotes stability to the allelic transmission in sweetpotato. |
| format | Journal Article |
| id | CGSpace107430 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace1074302025-03-13T09:46:39Z Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping Mollinari, M. Olukolu, B.A. Silva Pereira, G. da Khan, A. Gemenet, D. Yencho, George Craig Zeng, Z.B. polyploidy genetic linkage sweet potatoes hexaploidy The hexaploid sweetpotato (Ipomoea batatas (L.) Lam., 2n = 6x = 90) is an important staple food crop worldwide and plays a vital role in alleviating famine in developing countries. Due to its high ploidy level, genetic studies in sweetpotato lag behind major diploid crops significantly. We built an ultra-dense multilocus integrated genetic map and characterized the inheritance system in a sweetpotato full-sib family using our newly developed software, MAPpoly. The resulting genetic map revealed 96.5% collinearity between I. batatas and its diploid relative I. trifida. We computed the genotypic probabilities across the whole genome for all individuals in the mapping population and inferred their complete hexaploid haplotypes. We provide evidence that most of the meiotic configurations (73.3%) were resolved in bivalents, although a small portion of multivalent signatures (15.7%), among other inconclusive configurations (11.0%), were also observed. Except for low levels of preferential pairing in linkage group 2, we observed a hexasomic inheritance mechanism in all linkage groups. We propose that the hexasomic-bivalent inheritance promotes stability to the allelic transmission in sweetpotato. 2020-01-01 2020-03-09T16:33:48Z 2020-03-09T16:33:48Z Journal Article https://hdl.handle.net/10568/107430 en Open Access Oxford University Press Mollinari, M.; Olukolu, B.A.; Da Silva Pereira, G.; Khan, A.; Gemenet, D.; Yencho, G.C.; Zeng, Z.B. Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping. G3-Genes, Genomes, Genetics. ISSN: 2160-1836. 10(1) pp. 281-292. |
| spellingShingle | polyploidy genetic linkage sweet potatoes hexaploidy Mollinari, M. Olukolu, B.A. Silva Pereira, G. da Khan, A. Gemenet, D. Yencho, George Craig Zeng, Z.B. Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping |
| title | Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping |
| title_full | Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping |
| title_fullStr | Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping |
| title_full_unstemmed | Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping |
| title_short | Unraveling the hexaploid sweetpotato inheritance using ultra-dense multilocus mapping |
| title_sort | unraveling the hexaploid sweetpotato inheritance using ultra dense multilocus mapping |
| topic | polyploidy genetic linkage sweet potatoes hexaploidy |
| url | https://hdl.handle.net/10568/107430 |
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