Biologie et physiologie moléculaire du développement du fruit de café

Marraccini Pierre. 2010. Biologie et physiologie moléculaire du développement du fruit de café. Sarrebruck : Ed. universitaires européennes, 81 p. ISBN 978-613-1-54009-7. Habilitation à diriger des recherches : Université de Paris-Sud

Résumé : In commercial coffee species (Coffea arabica and canephora), the fruit development is a long process, characterized by tissue changes and evolutions. For example, soon after fecondation and up to mid development, the fruit is mainly constituted of the pericarp and perisperm tissue. Thereafter, the perisperm gradually disappears and it is progressively replaced by the endosperm (true seed). Firstly present in a "liquid" state, the endosperm hardens as it ripens during the maturation phase, as a result of accumulation of storage proteins, sucrose and complexes polysaccharides representing the main reserves of the seed. The last step of maturation is characterized by the dehydration of the endosperm and the color change of the pericarp. Important quantitative and qualitative changes accompanied the fruit growth, highlighting the importance of their study to better understand the final characteristics of coffee beans. After a description of the coffee fruit tissues, this review presents some data concerning biochemical, enzymatic and gene expression variations observed during the coffee fruit development.

Mots-clés Agrovoc : fève de café, Coffea, Coffea canephora, Coffea arabica, qualité, biochimie, amélioration des plantes, génie génétique, métabolisme des glucides, polyholoside, protéine de réserve, flaveur, expression des gènes, activité enzymatique, résistance à la sécheresse

Classification Agris : F30 - Génétique et amélioration des plantes
F62 - Physiologie végétale - Croissance et développement
F60 - Physiologie et biochimie végétale
H50 - Troubles divers des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Marraccini Pierre, CIRAD-BIOS-UMR DAP (BRA) ORCID: 0000-0001-7637-6811

Source : Cirad - Agritrop (https://agritrop.cirad.fr/558384/)

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