02084nas a2200169 4500008004100000245011800041210006900159520138700228100002801615700002301643700002401666700001901690700002001709700002701729700002001756856013801776 2018 eng d00aGuinea yam (Dioscorea spp., Dioscoreaceae) wild relatives identified using whole plastome phylogenetic analyses. 0 aGuinea yam Dioscorea spp Dioscoreaceae wild relatives identified3 a

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.

1 aMagwé-Tindo, acqueline1 aJ, Jan, J. Wiering1 aSonké, Bonaventure1 aZapfack, Louis1 aVigouroux, Yves1 aCouvreur, Thomas, L.P.1 aScarcelli, Nora uhttps://rubiaceae-africa.myspecies.info/content/guinea-yam-dioscorea-spp-dioscoreaceae-wild-relatives-identified-using-whole-plastome00623nas a2200157 4500008004100000245007600041210006900117100002900186700002200215700002400237700001900261700002000280700002800300700002000328856011700348 2019 eng d00aComplete plastome sequences of 14 African yam species (Dioscorea spp.).0 aComplete plastome sequences of 14 African yam species Dioscorea 1 aMagwé-Tindo, Jacqueline1 aWieringa, Jan, J.1 aSonké, Bonaventure1 aZapfack, Louis1 aVigouroux, Yves1 aCouvreur, Thomas, L. P.1 aScarcelli, Nora uhttps://rubiaceae-africa.myspecies.info/content/complete-plastome-sequences-14-african-yam-species-dioscorea-spp