Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas
Admixture and polyploidization are major recognized eukaryotic genome evolutionary processes. Their impacts on genome dynamics vary among systems and are still partially deciphered. Many banana cultivars are triploid (sometimes diploid) interspecific hybrids between Musa acuminata (A genome) and M....
| Autores principales: | , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2019
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| Acceso en línea: | https://hdl.handle.net/10568/99403 |
| _version_ | 1855540059174862848 |
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| author | Baurens, F.C. Martin, G. Hervouet, C. Salmon, F. Yohoume D. Ricci, S. Rouard, M. Habas, R. Yahiaoui, N. D’Hont, Angélique |
| author_browse | Baurens, F.C. D’Hont, Angélique Habas, R. Hervouet, C. Martin, G. Ricci, S. Rouard, M. Salmon, F. Yahiaoui, N. Yohoume D. |
| author_facet | Baurens, F.C. Martin, G. Hervouet, C. Salmon, F. Yohoume D. Ricci, S. Rouard, M. Habas, R. Yahiaoui, N. D’Hont, Angélique |
| author_sort | Baurens, F.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Admixture and polyploidization are major recognized eukaryotic genome evolutionary processes. Their impacts on genome dynamics vary among systems and are still partially deciphered. Many banana cultivars are triploid (sometimes diploid) interspecific hybrids between Musa acuminata (A genome) and M. balbisiana (B genome). They have no or very low fertility, are vegetatively propagated and have been classified as "AB," "AAB," or "ABB" based on morphological characters. We used NGS sequence data to characterize the A versus B chromosome composition of nine diploid and triploid interspecific cultivars, to compare the chromosome structures of A and B genomes and analyze A/B chromosome segregations in a polyploid context. We showed that interspecific recombination occurred frequently between A and B chromosomes. We identified two large structural variations between A and B genomes, a reciprocal translocation and an inversion that locally affected recombination and led to segregation distortion and aneuploidy in a triploid progeny. Interspecific recombination and large structural variations explained the mosaic genomes observed in edible bananas. The unprecedented resolution in deciphering their genome structure allowed us to start revisiting the origins of banana cultivars and provided new information to gain insight into the impact of interspecificity on genome evolution. It will also facilitate much more effective assessment of breeding strategies. |
| format | Journal Article |
| id | CGSpace99403 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace994032025-11-12T05:48:34Z Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas Baurens, F.C. Martin, G. Hervouet, C. Salmon, F. Yohoume D. Ricci, S. Rouard, M. Habas, R. Yahiaoui, N. D’Hont, Angélique bananas chromosomes genomes evolution interspecific hybridization polyploidy musa Admixture and polyploidization are major recognized eukaryotic genome evolutionary processes. Their impacts on genome dynamics vary among systems and are still partially deciphered. Many banana cultivars are triploid (sometimes diploid) interspecific hybrids between Musa acuminata (A genome) and M. balbisiana (B genome). They have no or very low fertility, are vegetatively propagated and have been classified as "AB," "AAB," or "ABB" based on morphological characters. We used NGS sequence data to characterize the A versus B chromosome composition of nine diploid and triploid interspecific cultivars, to compare the chromosome structures of A and B genomes and analyze A/B chromosome segregations in a polyploid context. We showed that interspecific recombination occurred frequently between A and B chromosomes. We identified two large structural variations between A and B genomes, a reciprocal translocation and an inversion that locally affected recombination and led to segregation distortion and aneuploidy in a triploid progeny. Interspecific recombination and large structural variations explained the mosaic genomes observed in edible bananas. The unprecedented resolution in deciphering their genome structure allowed us to start revisiting the origins of banana cultivars and provided new information to gain insight into the impact of interspecificity on genome evolution. It will also facilitate much more effective assessment of breeding strategies. 2019-01-01 2019-02-12T11:27:50Z 2019-02-12T11:27:50Z Journal Article https://hdl.handle.net/10568/99403 en Open Access application/pdf Oxford University Press Baurens, F.C.; Martin, G.; Hervouet, C.; Salmon, F.; Yohoume D.; Ricci, S.; Rouard, M.; Habas, R.; Yahiaoui, N.; D’Hont, A. (2018) Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas. Molecular Biology and Evolution, Online first November 6 2018. ISSN: 0737-4038 |
| spellingShingle | bananas chromosomes genomes evolution interspecific hybridization polyploidy musa Baurens, F.C. Martin, G. Hervouet, C. Salmon, F. Yohoume D. Ricci, S. Rouard, M. Habas, R. Yahiaoui, N. D’Hont, Angélique Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| title | Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| title_full | Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| title_fullStr | Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| title_full_unstemmed | Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| title_short | Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| title_sort | recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas |
| topic | bananas chromosomes genomes evolution interspecific hybridization polyploidy musa |
| url | https://hdl.handle.net/10568/99403 |
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