Starch localisation in Mango tree: Histological observations

Normand Frédéric, Lagier Sébastien, Escoute Jacques, Verdeil Jean-Luc, Mialet-Serra Isabelle. 2009. Starch localisation in Mango tree: Histological observations. In : Proceedings of the eighth international mango symposium, Sun City, South Africa, February 5-10, 2006. Oosthuyse Steve A. (ed.). ISHS. Louvain : ISHS [Belgique], 245-250. (Acta Horticulturae, 820) ISBN 978-90-6605-330-4 International Mango Symposium. 8, Sun City, Afrique du Sud, 5 Février 2006/10 Février 2006.

Résumé : Poor flowering and alternate bearing are major problems of mango which are commonly related to low carbohydrates level. Extensive work has been done on starch storage within the main components of the tree, roots, wood and leaves, and on relationships between starch and flowering. But study on starch location at a fine scale within the tree is lacking, as well as histological description of the storage organs and localisation of starch in the different tissues. Seventeen vegetative organs were sampled in a whole mango tree during the vegetative growth season. They were prepared for histological observation and starch grains dying. The main tissues found in roots, stem, branches and leaves of woody plants were present in mango. Leaf anatomy was characteristic of a plant adapted to semi-arid environment. On the basis of starch grains size and number, starch was mainly located in branches, coarse roots and taproot, and to a lesser extend, at least during the sampling season, in the stem and scaffolding branches. Leaves contained few starch grains. Starch was not distributed homogeneously within each organ: it was located in xylem parenchyma, and was absent from periderm. These results lead to sampling recommendation for starch analysis in woody organs.

Mots-clés Agrovoc : Mangifera indica, glucide, amidon, anatomie végétale, phloème, xylème

Mots-clés géographiques Agrovoc : La Réunion, France

Classification Agris : F62 - Physiologie végétale - Croissance et développement

Auteurs et affiliations

• Normand Frédéric, CIRAD-FLHOR-UPR Production fruitière (REU) ORCID: 0000-0002-4322-8262
• Lagier Sébastien
• Escoute Jacques, CIRAD-CP-UMR BEPC (FRA)
• Verdeil Jean-Luc, CIRAD-CP-UMR BEPC (FRA)
• Mialet-Serra Isabelle, CIRAD-AMIS-UPR Modélisation intégrative (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/530591/)

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