Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas

cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationCentre de Coopération Internationale en Recherche Agronomique Pour le Développementen
cg.contributor.affiliationCentre Africain de Recherches sur Bananiers et Plantainsen
cg.contributor.affiliationBioversity Internationalen
cg.contributor.affiliationUnité Mixte de Recherche - Amélioration Génétique et Adaptation des Plantes Méditerranéennes et Tropicalesen
cg.contributor.affiliationUnité Mixte de Recherche - Biologie et Génétique des Interactions Plante-Parasiteen
cg.contributor.affiliationCommissariat à L'énergie Atomique et aux Énergies Alternatives, Franceen
cg.contributor.crpRoots, Tubers and Bananas
cg.identifier.doihttps://doi.org/10.1093/molbev/msy199en
cg.isijournalISI Journalen
cg.issn0737-4038en
cg.issue1en
cg.journalMolecular Biology and Evolutionen
cg.reviewStatusPeer Reviewen
cg.subject.bioversityCHROMOSOMESen
cg.subject.bioversityGENOMESen
cg.subject.bioversityINTERSPECIFIC HYBRIDIZATIONen
cg.volume36en
dc.contributor.authorBaurens, F.C.en
dc.contributor.authorMartin, G.en
dc.contributor.authorHervouet, C.en
dc.contributor.authorSalmon, F.en
dc.contributor.authorYohoume D.en
dc.contributor.authorRicci, S.en
dc.contributor.authorRouard, M.en
dc.contributor.authorHabas, R.en
dc.contributor.authorYahiaoui, N.en
dc.contributor.authorD’Hont, Angéliqueen
dc.date.accessioned2019-02-12T11:27:50Zen
dc.date.available2019-02-12T11:27:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/99403
dc.titleRecombinations and large structural variations shape the mosaic genomes of interspecific edible bananasen
dcterms.abstractAdmixture and polyploidization are major recognized eukaryotic genome evolutionary processes. Their impacts on genome dynamics vary among systems and are still partially deciphered. Many banana cultivars are triploid (sometimes diploid) interspecific hybrids between Musa acuminata (A genome) and M. balbisiana (B genome). They have no or very low fertility, are vegetatively propagated and have been classified as "AB," "AAB," or "ABB" based on morphological characters. We used NGS sequence data to characterize the A versus B chromosome composition of nine diploid and triploid interspecific cultivars, to compare the chromosome structures of A and B genomes and analyze A/B chromosome segregations in a polyploid context. We showed that interspecific recombination occurred frequently between A and B chromosomes. We identified two large structural variations between A and B genomes, a reciprocal translocation and an inversion that locally affected recombination and led to segregation distortion and aneuploidy in a triploid progeny. Interspecific recombination and large structural variations explained the mosaic genomes observed in edible bananas. The unprecedented resolution in deciphering their genome structure allowed us to start revisiting the origins of banana cultivars and provided new information to gain insight into the impact of interspecificity on genome evolution. It will also facilitate much more effective assessment of breeding strategies.en
dcterms.accessRightsOpen Access
dcterms.available2018-11-06
dcterms.bibliographicCitationBaurens, F.C.; Martin, G.; Hervouet, C.; Salmon, F.; Yohoume D.; Ricci, S.; Rouard, M.; Habas, R.; Yahiaoui, N.; D’Hont, A. (2018) Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas. Molecular Biology and Evolution, Online first November 6 2018. ISSN: 0737-4038en
dcterms.extentpp. 97-111en
dcterms.issued2019-01-01
dcterms.languageen
dcterms.licenseCC-BY-NC-4.0
dcterms.publisherOxford University Pressen
dcterms.subjectbananasen
dcterms.subjectchromosomesen
dcterms.subjectgenomesen
dcterms.subjectevolutionen
dcterms.subjectinterspecific hybridizationen
dcterms.subjectpolyploidyen
dcterms.subjectmusaen
dcterms.typeJournal Article

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