Cytology, biochemistry and molecular changes during coffee fruit development

De Castro Renato D., Marraccini Pierre. 2006. Cytology, biochemistry and molecular changes during coffee fruit development. Brazilian Journal of Plant Physiology, 18 (1) : pp. 175-199.

Journal article ; Article de revue à comité de lecture
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Abstract : In commercial coffee species (Coffea arabica and Coffea canephora), fruit development is a lengthy process, characterized by tissue changes and evolutions. For example, soon after fecundation and up to mid development, the fruit is mainly constituted of the pericarp and perisperm tissue. Thereafter, the perisperm gradually disappears and is progressively replaced by the endosperm (true seed). Initially 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 complex 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 accompany fruit growth, highlighting the importance of its study to better understand the final characteristics of coffee beans. Following 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. The latter will also be analyzed in the light of recent data (electronic expression profiles) arising from the Brazilian Coffee Genome Project. Key words: Coffea spp, bean development, cell cycle, endosperm, EST, gene expression, pericarp, perisperm. (Résumé d'auteur)

Mots-clés Agrovoc : Coffea arabica, Coffea canephora, Cytologie, Biochimie, Développement biologique, Fève de café, Maturation, Endosperme, Péricarpe, Expression des gènes, Cycle cellulaire, Tissu végétal, Propriété physicochimique

Classification Agris : F62 - Plant physiology - Growth and development
F30 - Plant genetics and breeding

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

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