Traditional banana diversity in Oceania: An endangered heritage
| العنوان: | Traditional banana diversity in Oceania: An endangered heritage |
|---|---|
| المؤلفون: | Henri Vandenbroucke, Céline Cardi, Xavier Perrier, Nicolas Roux, Maurice Wong, Anthony Ollivier, Pierre Mournet, Valérie Tuia, Jaroslav Doležel, Christophe Jenny, Cécile Dubois, Valérie Kagy |
| المصدر: | PloS One PLoS ONE PLoS ONE, Vol 11, Iss 3, p e0151208 (2016) |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, Biodiversity, Endangered species, lcsh:Medicine, Bananas, Plant Science, Subspecies, Plant Genetics, 01 natural sciences, Musa acuminata, Geographical locations, F30 - Génétique et amélioration des plantes, Monophyly, Musa balbisiana, Marqueur génétique, lcsh:Science, Multidisciplinary, Geography, biology, food and beverages, Agriculture, Phylogenetic Analysis, F70 - Taxonomie végétale et phytogéographie, Plants, Triploidy, Phylogeography, Biogeography, Biodiversité, Génotype, Research Article, Genetic Markers, Genotype, Oceania, Biogéographie, Organisme indigène, Crops, Research and Analysis Methods, Conservation des ressources génétiques, Fruits, Polyploidy, Papua New Guinea, Variation génétique, Plante amylacée, New Caledonia, Botany, Genetics, Molecular Biology Techniques, Molecular Biology, Evolutionary Biology, Molecular Biology Assays and Analysis Techniques, Genetic diversity, Population Biology, lcsh:R, Ecology and Environmental Sciences, Organisms, Biology and Life Sciences, Genetic Variation, Musa, 15. Life on land, biology.organism_classification, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Evolutionary biology, Earth Sciences, Hybridization, Genetic, lcsh:Q, People and places, Departures from Diploidy, Population Genetics, Crop Science, 010606 plant biology & botany |
| الوصف: | 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. |
| وصف الملف: | text |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5944dae3b7c2354b837523153376ddbd http://agritrop.cirad.fr/580085/ |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5944dae3b7c2354b837523153376ddbd |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |