@article{fdi:010070104,
  title = {{S}tructure of sweet potato ({I}pomoea batatas) diversity in {W}est {A}frica covaries with a climatic gradient},
  author = {{G}lato, {K}. and {A}idam, {A}. and {K}ane, {N}. {A}. and {B}assirou, {D}. and {C}ouderc, {M}arie and {Z}ekraoui, {L}eila and {S}carcelli, {N}ora and {B}arnaud, {A}deline and {V}igouroux, {Y}ves},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ub-{S}aharan agriculture has been identified as vulnerable to ongoing climate change. {A}daptation of agriculture has been suggested as a way to maintain productivity. {B}etter knowledge of intra-specific diversity of varieties is prerequisites for the successful management of such adaptation. {A}mong crops, root and tubers play important roles in food security and economic growth for the most vulnerable populations in {A}frica. {H}ere, we focus on the sweet potato. {T}he {S}weet potato ({I}pomoea batatas) was domesticated in {C}entral and {S}outh {A}merica and was later introduced into {A}frica and is now cultivated throughout tropical {A}frica. {W}e evaluated its diversity in {W}est {A}frica by sampling a region extending from the coastal area of {T}ogo to the northern {S}ahelian region of {S}enegal that represents a range of climatic conditions. {U}sing 12 microsatellite markers, we evaluated 132 varieties along this gradient. {P}henotypic data from field trials conducted in three seasons was also obtained. {G}enetic diversity in {W}est {A}frica was found to be 18% lower than in {A}merica. {G}enetic diversity in {W}est {A}frica is structured into five groups, with some groups found in very specific climatic areas, e.g. under a tropical humid climate, or under a {S}ahelian climate. {W}e also observed genetic groups that occur in a wider range of climates. {T}he genetic groups were also associated with morphological differentiation, mainly the shape of the leaves and the color of the stem or root. {T}his particular structure of diversity along a climatic gradient with association to phenotypic variability can be used for conservation strategies. {I}f such structure is proved to be associated with specific climatic adaptation, it will also allow developing strategies to adapt agriculture to ongoing climate variation in {W}est {A}frica.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {TOGO} ; {SENEGAL}},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {12},
  numero = {5},
  pages = {e0177697 [17 ]},
  ISSN = {1932-6203},
  year = {2017},
  DOI = {10.1371/journal.pone.0177697},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070104},
}