Traditional banana diversity in Oceania: an endangered heritage
This study aims to understand the genetic diversity of traditional Oceanian starchy bananas in order to propose an efficient conservation strategy for these endangered varieties. SSR and DArT molecular markers are used to characterize a large sample of Pacific accessions, from New Guinea to Tahiti a...
| Autores principales: | , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Public Library of Science
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/72767 |
| _version_ | 1855514531961241600 |
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| author | Kagy, V. Wong, M. Vandenbroucke, H. Jenny, C. Dubois, C. Ollivier, A. Cardi, C. Mournet, P. Tuia, V.S. Roux, N. Doležel, Jaroslav Perrier, Xavier |
| author_browse | Cardi, C. Doležel, Jaroslav Dubois, C. Jenny, C. Kagy, V. Mournet, P. Ollivier, A. Perrier, Xavier Roux, N. Tuia, V.S. Vandenbroucke, H. Wong, M. |
| author_facet | Kagy, V. Wong, M. Vandenbroucke, H. Jenny, C. Dubois, C. Ollivier, A. Cardi, C. Mournet, P. Tuia, V.S. Roux, N. Doležel, Jaroslav Perrier, Xavier |
| author_sort | Kagy, V. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This study aims to understand the genetic diversity of traditional Oceanian starchy bananas in order to propose an efficient conservation strategy for these endangered varieties. SSR and DArT molecular markers are used to characterize a large sample of Pacific accessions, from New Guinea to Tahiti and Hawaii. All Pacific starchy bananas are shown of New Guinea origin, by interspecific hybridization between Musa acuminata (AA genome), more precisely its local subspecies M. acuminata ssp. banksii, and M. balbisiana (BB genome) generating triploid AAB Pacific starchy bananas. These AAB genotypes do not form a subgroup sensu stricto and genetic markers differentiate two subgroups across the three morphotypes usually identified: Iholena versus Popoulu and Maoli. The Popoulu/Maoli accessions, even if morphologically diverse throughout the Pacific, cluster in the same genetic subgroup. However, the subgroup is not strictly monophyletic and several close, but different genotypes are linked to the dominant genotype. One of the related genotypes is specific to New Caledonia (NC), with morphotypes close to Maoli, but with some primitive characters. It is concluded that the diffusion of Pacific starchy AAB bananas results from a series of introductions of triploids originating in New Guinea area from several sexual recombination events implying different genotypes of M. acuminata ssp. banksii. This scheme of multiple waves from the New Guinea zone is consistent with the archaeological data for peopling of the Pacific. The present geographic distribution suggests that a greater diversity must have existed in the past. Its erosion finds parallels with the erosion of cultural traditions, inexorably declining in most of the Polynesian or Melanesian Islands. Symmetrically, diversity hot spots appear linked to the local persistence of traditions: Maoli in New Caledonian Kanak traditions or Iholena in a few Polynesian islands. These results will contribute to optimizing the conservation strategy for the ex-situ Pacific Banana Collection supported collectively by the Pacific countries. |
| format | Journal Article |
| id | CGSpace72767 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Public Library of Science |
| publisherStr | Public Library of Science |
| record_format | dspace |
| spelling | CGSpace727672025-11-12T05:37:25Z Traditional banana diversity in Oceania: an endangered heritage Kagy, V. Wong, M. Vandenbroucke, H. Jenny, C. Dubois, C. Ollivier, A. Cardi, C. Mournet, P. Tuia, V.S. Roux, N. Doležel, Jaroslav Perrier, Xavier bananas musa phylogeny triploidy genetic markers biodiversity This study aims to understand the genetic diversity of traditional Oceanian starchy bananas in order to propose an efficient conservation strategy for these endangered varieties. SSR and DArT molecular markers are used to characterize a large sample of Pacific accessions, from New Guinea to Tahiti and Hawaii. All Pacific starchy bananas are shown of New Guinea origin, by interspecific hybridization between Musa acuminata (AA genome), more precisely its local subspecies M. acuminata ssp. banksii, and M. balbisiana (BB genome) generating triploid AAB Pacific starchy bananas. These AAB genotypes do not form a subgroup sensu stricto and genetic markers differentiate two subgroups across the three morphotypes usually identified: Iholena versus Popoulu and Maoli. The Popoulu/Maoli accessions, even if morphologically diverse throughout the Pacific, cluster in the same genetic subgroup. However, the subgroup is not strictly monophyletic and several close, but different genotypes are linked to the dominant genotype. One of the related genotypes is specific to New Caledonia (NC), with morphotypes close to Maoli, but with some primitive characters. It is concluded that the diffusion of Pacific starchy AAB bananas results from a series of introductions of triploids originating in New Guinea area from several sexual recombination events implying different genotypes of M. acuminata ssp. banksii. This scheme of multiple waves from the New Guinea zone is consistent with the archaeological data for peopling of the Pacific. The present geographic distribution suggests that a greater diversity must have existed in the past. Its erosion finds parallels with the erosion of cultural traditions, inexorably declining in most of the Polynesian or Melanesian Islands. Symmetrically, diversity hot spots appear linked to the local persistence of traditions: Maoli in New Caledonian Kanak traditions or Iholena in a few Polynesian islands. These results will contribute to optimizing the conservation strategy for the ex-situ Pacific Banana Collection supported collectively by the Pacific countries. 2016 2016-03-31T09:23:02Z 2016-03-31T09:23:02Z Journal Article https://hdl.handle.net/10568/72767 en Open Access application/pdf Public Library of Science Kagy, V.; Wong, M.; Vandenbroucke, H.; Jenny, C.; Dubois, C.; Ollivier, A.; Cardi, C.; Mournet, P.; Tuia, V.; Roux, N.; Dolezel, J.; Perrier, X. (2016) Traditional banana diversity in Oceania: an endangered heritage. PLoS ONE 11(3): e0151208 ISSN: 1932-6203 |
| spellingShingle | bananas musa phylogeny triploidy genetic markers biodiversity Kagy, V. Wong, M. Vandenbroucke, H. Jenny, C. Dubois, C. Ollivier, A. Cardi, C. Mournet, P. Tuia, V.S. Roux, N. Doležel, Jaroslav Perrier, Xavier Traditional banana diversity in Oceania: an endangered heritage |
| title | Traditional banana diversity in Oceania: an endangered heritage |
| title_full | Traditional banana diversity in Oceania: an endangered heritage |
| title_fullStr | Traditional banana diversity in Oceania: an endangered heritage |
| title_full_unstemmed | Traditional banana diversity in Oceania: an endangered heritage |
| title_short | Traditional banana diversity in Oceania: an endangered heritage |
| title_sort | traditional banana diversity in oceania an endangered heritage |
| topic | bananas musa phylogeny triploidy genetic markers biodiversity |
| url | https://hdl.handle.net/10568/72767 |
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