Unravelling genomic drivers of speciation in Musa through genome assemblies of wild banana ancestors

Martin Guillaume, Istace Benjamin, Baurens Franc-Christophe, Belser Caroline, Hervouet Catherine, Labadie Karine, Cruaud Corinne, Noël Benjamin, Guiougou Chantal, Salmon Frédéric, Mahadeo Joel, Ahmad Fajarudin, Volkaert Hugo A., Droc Gaëtan, Rouard Mathieu, Sardos Julie, Wincker Patrick, Yahiaoui Nabila, Aury Jean-Marc, D'Hont Angélique. 2025. Unravelling genomic drivers of speciation in Musa through genome assemblies of wild banana ancestors. Nature Communications, 16 (1):961, 14 p.

Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/6TLMD3 / Url - autres données associées : http://banana-genome-hub.southgreen.fr / Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/bioproject/?term=PRJNA1078411 / Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/bioproject/?term=PRJNA1182927 / Url - autres données associées : https://github.com/SouthGreenPlatform/VcfHunter

Résumé : Hybridization between wild Musa species and subspecies from Southeast Asia is at the origin of cultivated bananas. The genomes of these cultivars are complex mosaics involving nine genetic groups, including two previously unknown contributors. This study provides continuous genome assemblies for six wild genetic groups, one of which represents one of the unknown ancestor, identified as M.acuminata ssp. halabanensis. The second unknown ancestor partially present in a seventh assembly appears related to M. a. ssp. zebrina. These assemblies provide key resources for banana genetics and for improving cultivar assemblies, including that of the emblematic triploid Cavendish. Comparative and phylogenetic analyses reveal an ongoing speciation process within Musa, characterised by large chromosome rearrangements and centromere differentiation through the integration of different types of repeated sequences, including rDNA tandem repeats. This speciation process may have been favoured by reproductive isolation related to the particular context of climate and land connectivity fluctuations in the Southeast Asian region.

Mots-clés Agrovoc : génome, Musa, variété, génomique, provenance, phylogénie, séquence nucléotidique, Musa acuminata, Musa balbisiana

Mots-clés géographiques Agrovoc : Asie du Sud-Est, France, Indonésie

Mots-clés libres : Cytogenetics, Phylogenomics, Plant hybridization, Speciation

Agences de financement hors UE : Genoscope, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Agence Nationale de la Recherche, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Agropolis Fondation

Projets sur financement : (FRA) France Génomique-INBS, (FRA) Agricultural Sciences for sustainable Development

Auteurs et affiliations

• Martin Guillaume, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-1801-7500 - auteur correspondant
• Istace Benjamin, CEA (FRA)
• Baurens Franc-Christophe, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-5219-8771
• Belser Caroline, CEA (FRA)
• Hervouet Catherine, CIRAD-BIOS-UMR AGAP (FRA)
• Labadie Karine, CNRS (FRA)
• Cruaud Corinne, CEA (FRA)
• Noël Benjamin, CEA (FRA)
• Guiougou Chantal, CIRAD-BIOS-UMR AGAP (GLP)
• Salmon Frédéric, CIRAD-BIOS-UMR AGAP (GLP)
• Mahadeo Joel, CIRAD-BIOS-UMR AGAP (GLP)
• Ahmad Fajarudin, Organization Research for Live Sciences and Environment (IDN)
• Volkaert Hugo A., Kasetsart University (THA)
• Droc Gaëtan, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0003-1849-1269
• Rouard Mathieu, CIRAD-BIOS-UMR AGAP (FRA)
• Sardos Julie, CIRAD-BIOS-UMR AGAP (FRA)
• Wincker Patrick, CEA (FRA)
• Yahiaoui Nabila, CIRAD-BIOS-UMR AGAP (FRA)
• Aury Jean-Marc, CEA (FRA)
• D'Hont Angélique, CIRAD-BIOS-UMR AGAP (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/611792/)

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