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Antioxidant and enzymatic responses to oxidative stress induced by pre-harvest water supply reduction and ripening on mango (Mangifera indica L. cv. 'Cogshall') in relation to carotenoid content

Rosalie Rémy, Joas Jacques, Deytieux-Belleau Christelle, Vulcain Emmanuelle, Payet Bertrand, Dufossé Laurent, Lechaudel Mathieu. 2015. Antioxidant and enzymatic responses to oxidative stress induced by pre-harvest water supply reduction and ripening on mango (Mangifera indica L. cv. 'Cogshall') in relation to carotenoid content. Journal of Plant Physiology, 184 : pp. 68-78.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : PLANT SCIENCES

Abstract : The effects of a reduction in water supply during fruit development and postharvest fruit ripening on the oxidative status and the antioxidant defense system were studied in the mango fruit (Mangifera indica L.) cv. Cogshall. Changes in non-enzymatic (ascorbate) and enzymatic (SOD, CAT, APX, MDHAR, DHAR and GR) antioxidants, as well as oxidative parameters (H2O2 and MDA) and major carotenoids, were measured in unripe and ripe fruits from well-irrigated and non-irrigated trees. Under non-limiting water supply conditions, ripening induced oxidation as a result of the production of ROS and decreased ascorbate content. Antioxidant enzymatic systems were activated to protect fruit tissues and to regenerate the ascorbate pool. The carotenoid pool, mainly represented by beta-carotene and esterified violaxanthine isomers, accumulated naturally duringmangoripening. The suppression of irrigation decreased fruit size and induced accumulation of ABA and of its storage form, ABA-GE, in fruit pulp from the earliest harvest. It also increased oxidation, which was observable by the high levels of ascorbate measured at the early stages at harvest, and by the delay in the time it took to reach the pseudo constant carotene-to-xanthophyll ratio in ripe fruits. Nevertheless, differences between the irrigation treatments on the antioxidant system in ripe fruits were not significant, mainly because of the drastic changes in this system during ripening. (Résumé d'auteur)

Mots-clés Agrovoc : Mangue, Mangifera indica, Stress oxydatif, Mûrissage, Technologie après récolte, Caroténoïde, Irrigation, ABA, Développement biologique, Qualité, Mécanisme de défense cellulaire, Activité enzymatique, dérivé réactif de l'oxygène

Mots-clés géographiques Agrovoc : Réunion

Mots-clés libres : Mango, Ripening, Irrigation, Abscisic acid, Carotenoids, ROS, Ascorbate

Classification Agris : F60 - Plant physiology and biochemistry
F01 - Crop husbandry
F06 - Irrigation
J11 - Handling, transport, storage and protection of plant products

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Rosalie Rémy, CIRAD-PERSYST-UMR Qualisud (REU)
  • Joas Jacques, CIRAD-PERSYST-UMR Qualisud (FRA)
  • Deytieux-Belleau Christelle
  • Vulcain Emmanuelle
  • Payet Bertrand, Université de la Réunion (REU)
  • Dufossé Laurent, Université de la Réunion (REU)
  • Lechaudel Mathieu, CIRAD-PERSYST-UMR Qualisud (GLP) ORCID: 0000-0002-1108-8357

Source : Cirad-Agritrop (https://agritrop.cirad.fr/577442/)

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