Evolution of gene families involved in banana fruit development and ripening : W077

Jourda Cyril, Mbéguié-A-Mbéguié Didier, Dasilva C., Labadie Karine, Cardi Céline, D'Hont Angélique, Yahiaoui Nabila. 2013. Evolution of gene families involved in banana fruit development and ripening : W077. In : Plant and Animal Genome XXI conference, San Diego, USA, January 12-16 2013,. s.l. : s.n., Résumé, 1 p. Plant and Animal Genome conference. 21, San Diego, États-Unis, 12 Janvier 2013/16 Janvier 2013.

Résumé : A reference genome sequence of banana was recently obtained from a Musa acuminata doubled-haploid accession (DH-Pahang, 523 Mb) and organized into eleven pseudomolecules. This genome opens brand new perspectives for the identification of genes underlying key physiological processes and agricultural traits in this economically important species. To identify genes involved in banana fruit development and ripening, we used a whole genome-scale approach combining phylogenomic analyses and gene expression profiling. Global analysis of gene expression in banana fruits in response to ethylenic treatment was performed using RNA-seq. In parallel, gene families involved in core ethylene biosynthesis/signaling pathways and starch/sucrose metabolism were identified in the Musa genome using comparative genomics and phylogenomic analyses with eleven plant species. Our results showed a progressive global reprogramming of banana fruits during ripening characterized by an inhibition of the downstream ethylene signaling pathway. In addition, we identified expansions of gene families encoding transcriptional regulation elements of the ethylene signaling pathway in Musa. These expansions are currently analyzed in relation to Musa whole genome duplications. Finally, the combined structural and gene expression analyses led to the identification of candidate genes and gene family members involved in banana fruit ripening.

Classification Agris : F30 - Génétique et amélioration des plantes
F62 - Physiologie végétale - Croissance et développement
F60 - Physiologie et biochimie végétale

Auteurs et affiliations

• Jourda Cyril, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-7799-3501
• Mbéguié-A-Mbéguié Didier, CIRAD-PERSYST-UMR Qualisud (GLP) ORCID: 0000-0002-9256-3999
• Dasilva C., CEA (FRA)
• Labadie Karine, Institut de génomique (FRA)
• Cardi Céline, CIRAD-BIOS-UMR AGAP (FRA)
• D'Hont Angélique, CIRAD-BIOS-UMR AGAP (FRA)
• Yahiaoui Nabila, CIRAD-BIOS-UMR AGAP (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/568342/)

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