Publications des scientifiques de l'IRD

Magwe-Tindo J., Wieringa J. J., Sonke B., Zapfack L., Vigouroux Yves, Couvreur Thomas, Scarcelli Nora. (2018). Guinea yam (Dioscorea spp., Dioscoreaceae) wild relatives identified using whole plastome phylogenetic analyses. Taxon, 67 (5), p. 905-915. ISSN 0040-0262.

Titre du document
Guinea yam (Dioscorea spp., Dioscoreaceae) wild relatives identified using whole plastome phylogenetic analyses
Année de publication
2018
Type de document
Article référencé dans le Web of Science WOS:000448301800004
Auteurs
Magwe-Tindo J., Wieringa J. J., Sonke B., Zapfack L., Vigouroux Yves, Couvreur Thomas, Scarcelli Nora
Source
Taxon, 2018, 67 (5), p. 905-915 ISSN 0040-0262
The genus Dioscorea (Dioscoreaceae) contains several economically important species for human consumption, medical and pharmaceutical uses. The phylogeny of this genus is not yet fully resolved. As a result, the relationships between cultivated yams and their wild relatives are not well understood and this negatively affects the understanding of the evolution of cultivated yams. Here, we reconstructed the phylogenetic relationships of the main African cultivated species with all West African species in order to better circumscribe the crop wild relatives of African yams. Complete plastomes of 57 individuals representing all 17 known Dioscorea species from West Africa were reconstructed. Tree topologies generated using maximum parsimony and maximum likelihood approaches were highly congruent. Six monophyletic groups were obtained. All the species were distinct except within the cultivated clade, where it was not possible to separate the two main cultivated species (D. cayenensis, D. rotundata) from their closest West African wild relatives (D. abyssinica, D. praehensilis, D. sagittifolia). Dioscorea baya formed a monophyletic group closely related to the cultivated clade. We therefore suggest it is included within the yam crop-wild relative complex.
Plan de classement
Sciences du monde végétal [076]
Description Géographique
AFRIQUE DE L'OUEST
Localisation
Fonds IRD [F B010074332]
Identifiant IRD
fdi:010074332
Contact