Integration of GWAS, metabolomics, and sensorial analyses to reveal novel metabolic pathways involved in cocoa fruity aroma GWAS of fruity aroma in Theobroma cacao

Colonges Kelly, Jimenez Juan Carlos, Saltos Alejandra, Seguine Edward, Loor Solorzano Rey Gaston, Fouet Olivier, Argout Xavier, Assemat Sophie, Davrieux Fabrice, Cros Emile, Lanaud Claire, Boulanger Renaud. 2022. Integration of GWAS, metabolomics, and sensorial analyses to reveal novel metabolic pathways involved in cocoa fruity aroma GWAS of fruity aroma in Theobroma cacao. Plant Physiology and Biochemistry, 171 : 213-225.

Url - autres données associées : https://tropgenedb.cirad.fr/tropgene/JSP/interface.jsp?module=COCOA

Résumé : Nacional is a variety of cocoa tree known for its "Arriba" aroma characterised mainly by fruity, floral, and spicy aromatic notes. In this study, the genetic basis of the fruity aroma of modern Nacional cocoa was investigated. GWAS studies have been conducted on biochemical and sensorial fruity traits and allowed to identify a large number of association zones. These areas are linked to both the volatile compounds known to provide fruity flavours and present in the beans before and after roasting, and to the fruity notes detected by sensorial analysis. Five main metabolic pathways were identified as involved in the fruity traits of the Nacional population: the protein degradation pathway, the sugar degradation pathway, the fatty acid degradation pathway, the monoterpene pathway, and the L-phenylalanine pathway. Candidate genes involved in the biosynthetic pathways of volatile compounds identified in association areas were detected for a large number of associations.

Mots-clés Agrovoc : composé de la flaveur, analyse organoleptique, composé aromatique, phytogénétique, Theobroma cacao, métabolomique

Mots-clés libres : GWAS, Cocoa, Aroma, Fruity note, Genetic bases, Biochemical bases

Classification Agris : Q04 - Composition des produits alimentaires
F30 - Génétique et amélioration des plantes

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

Auteurs et affiliations

• Colonges Kelly, CIRAD-BIOS-UMR AGAP (FRA) - auteur correspondant
• Jimenez Juan Carlos, INIAP (ECU)
• Saltos Alejandra, INIAP (ECU)
• Seguine Edward, Guittard Chocolate (USA)
• Loor Solorzano Rey Gaston, INIAP (ECU)
• Fouet Olivier, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0001-8547-1474
• Argout Xavier, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-0100-5511
• Assemat Sophie, CIRAD-PERSYST-UMR Qualisud (REU)
• Davrieux Fabrice, CIRAD-PERSYST-UMR Qualisud (REU)
• Cros Emile, Université de Montpellier (FRA)
• Lanaud Claire, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0001-6411-7310
• Boulanger Renaud, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0001-9396-5634 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/600255/)

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