Crop wild relative conservation: Wild yams are not that wild
| Autor: | Nora Scarcelli, Hâna Chaïr, Sandrine Causse, Raphaël Vesta, Thomas L.P. Couvreur, Yves Vigouroux |
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| Přispěvatelé: | Institut de Recherche pour le Développement (IRD [France-Sud]), Diversité, adaptation, développement des plantes (UMR DIADE), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Département Systèmes Biologiques (Cirad-BIOS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Introgression [SDV]Life Sciences [q-bio] Chloroplast F30 - Génétique et amélioration des plantes Gene flow Crop 03 medical and health sciences Botany [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Cultivar Ecology Evolution Behavior and Systematics Nature and Landscape Conservation Hybrid 2. Zero hunger Genetic diversity biology food and beverages F70 - Taxonomie végétale et phytogéographie 15. Life on land biology.organism_classification 030104 developmental biology Crop wild relatives Dioscorea rotundata Agronomy Crop wild relative NGS Yam P01 - Conservation de la nature et ressources foncières Crop-to-wild gene flow |
| Zdroj: | Biological Conservation Biological Conservation, Elsevier, 2017, 210, pp.325-333. ⟨10.1016/j.biocon.2017.05.001⟩ |
| ISSN: | 0006-3207 |
| Popis: | Extension of land use has been the main way to increase agricultural production to date. Natural habitats have consequently decreased and became increasingly fragmented, putting high pressure on the wild relatives of main crops. In this study, we assessed the diversity of wild relatives and cultivated varieties of yam, Dioscorea rotundata , a tuber crop grown in West Africa. Using nuclear markers, we showed that 19% of the wild plants were in fact hybrids between wild and cultivated varieties. Using whole chloroplast sequences, our results suggest that hybridization may be even stronger, with 43% of the wild individuals presenting either chloroplast or nuclear introgression with the cultivated yams. Adaptation of agriculture to current new pathogen outbreaks and ongoing climatic changes will require mining the vast diversity found in crops wild relatives. However, our study suggests that wild yam diversity is already largely tainted by crop-to-wild gene flow. The need to focus on in-situ wild yam conservation is even more crucial, since today, ex-situ genebanks contain nearly no wild yam accessions. Data profile Microsatellite allele scoring is available as an online appendix; NGS data (.bam file) are available as SRA bioproject PRJNA383673. |
| Databáze: | OpenAIRE |
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