Yam genomics supports West Africa as a major cradle of crop domestication

Scarcelli Nora, Cubry Philippe, Akakpo Roland, Thuillet Anne-Céline, Obidiegwu Jude, Baco Mohamed N., Otoo Emmanuel, Sonké Bonaventure, Dansi Alexandre, Djedatin Gustave, Mariac Cédric, Couderc Marie, Causse Sandrine, Alix Karine, Chaïr Hâna, François Olivier, Vigouroux Yves. 2019. Yam genomics supports West Africa as a major cradle of crop domestication. Science Advances, 5 (5):eaaw1947, 7 p.

https://doi.org/10.1126/sciadv.aaw1947

Article de revue ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total

Prévisualisation

Version publiée - Anglais
Sous licence

.
Scarcelli_ScienceAdvances2019.pdf
Télécharger (1MB) | Prévisualisation

Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Résumé : While there has been progress in our understanding of the origin and history of agriculture in sub-Saharan Africa, a unified perspective is still lacking on where and how major crops were domesticated in the region. Here, we investigated the domestication of African yam (Dioscorea rotundata), a key crop in early African agriculture. Using whole-genome resequencing and statistical models, we show that cultivated yam was domesticated from a forest species. We infer that the expansion of African yam agriculture started in the Niger River basin. This result, alongside with the origins of African rice and pearl millet, supports the hypothesis that the vicinity of the Niger River was a major cradle of African agriculture.

Mots-clés Agrovoc : igname, génomique, domestication des plantes, séquence nucléotidique, provenance, histoire naturelle

Mots-clés géographiques Agrovoc : Afrique occidentale, Niger

Classification Agris : F30 - Génétique et amélioration des plantes
B50 - Histoire
F70 - Taxonomie végétale et phytogéographie

Champ stratégique Cirad : CTS 1 (2019-) - Biodiversité

Auteurs et affiliations