Efficiency of simple sequence repeat (SSR) markers in genetic diversity study and differentiation of Borassus aethiopum Mart. and Borassus akeassii Bayton, Ouédr. & Guinko

Adeoti Zoul Kifouli, Salako Kolawolé Valère, Daa-Kpodé Ulysse Ayihaou, Ouedraogo Amadé, Santoni Sylvain, Aberlenc Frédérique, Kpatenon Mariano Joly, Latreille Muriel, Tollon-Cordet Christine, Etsè Kodjo Djidjolé, Abba Mahmoud Oumar Hissein, Faye Adana, Jaligot Estelle, Beulé Thierry. 2025. Efficiency of simple sequence repeat (SSR) markers in genetic diversity study and differentiation of Borassus aethiopum Mart. and Borassus akeassii Bayton, Ouédr. & Guinko. Genetic Resources and Crop Evolution, 72 : 1903-1919.

https://doi.org/10.1007/s10722-024-02067-3

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Résumé : The African fan palm, Borassus aethiopum, is widely distributed in West and Central Africa. To contribute to the understanding of its evolutionary history and geographical distribution, we have performed the analysis of its genetic diversity and population structure through a wide samples collection in different countries. Simple sequences repeat (SSR) markers were used to assess the population structure and genetic diversity of such samples. Genetic diversity was estimated for a total of 201 samples of B. aethiopum using 13 SSR markers. The result of our analysed populations indicated a mean value of expected heterozygosity (He) of 0.395, suggesting a moderate genetic diversity, with 62% and 37% of molecular variance within individuals and among populations, respectively. Clustering analysis by using Bayesian method and principal component analysis clustered populations into two main groups corresponding to the two sampling regions (West and Central Africa), and each group consists of two genetic clusters. In addition to this, we tested the ability of the same SSR markers to discriminate between both fan palm species occurring in sub-Saharan Africa, namely B. aethiopum and B. akeassii. Hence, our markers can be used as molecular tools for differentiating both species and furthermore for genetic diversity of B. akeassii populations.

Mots-clés Agrovoc : variation génétique, marqueur génétique, microsatellite, Borassus aethiopum, distribution géographique, génétique des populations, structure de la population, génotype, Borassus

Mots-clés géographiques Agrovoc : Bénin, Burkina Faso, Sénégal, Tchad, Togo

Mots-clés complémentaires : Borassus akeassii

Mots-clés libres : Borassus akeassii, Genetic markers, Population structure, Rhon palms, Sub-Saharan Africa

Classification Agris : F30 - Génétique et amélioration des plantes

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

Agences de financement hors UE : Agropolis Fondation, Agence Nationale de la Recherche

Projets sur financement : (FRA) MooSciTIC, (FRA) Agricultural Sciences for sustainable Development, (BEN) GenPhyB

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