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Coumaroyl-isocitric and caffeoyl-isocitric acids as markers of pineapple fruitlet core rot disease

Barral Bastien, Chillet Marc, Lechaudel Mathieu, Lugan R., Schorr-Galindo Sabine. 2019. Coumaroyl-isocitric and caffeoyl-isocitric acids as markers of pineapple fruitlet core rot disease. Fruits, 74 (1) : pp. 11-17.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q4, Sujet : HORTICULTURE

Abstract : Introduction – Fruitlet core rot is the major postharvest disease affecting 'Queen' pineapple in La Réunion island. The symptoms are black spots located in the pineapple fruitlets. Materials and methods – Fusarium ananatum, the main causal agent of fruitlet core rot was inoculated in 'MD-2' and 'Queen' (Victoria), a tolerant and a susceptible cultivar, respectively. A metabolomics approach to healthy and inoculated fruitlets allowed to determine which putative metabolites are involved in fruitlet core rot disease. The evolution of fruitlet core rot was then followed-up with a focus on the phenolic compounds. Results and discussion – Based on the metabolomics results, the phenolic compounds seemed to be determining markers of black spots. Coumaroylisocitrate and caffeoylisocitrate dramatically increased in the infected fruitlets in both cultivars post-inoculation. The 'MD-2'-infected fruitlets reached higher hydroxycinnamic acid levels in a shorter time than those of the 'Queen'-infected fruitlets. In healthy fruits of 'MD-2', coumaroyl-isocitric acid and hydroxybenzoic acids were naturally produced as the fruit mature. Conclusion – These phenolic compounds play a major role in the pineapple disease resistance.

Mots-clés Agrovoc : Ananas comosus, Fusarium, Composé phénolique, Résistance aux maladies, Métabolite

Mots-clés géographiques Agrovoc : Réunion

Mots-clés complémentaires : fusarium ananatum

Classification Agris : H20 - Plant diseases

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations

  • Barral Bastien, CIRAD-PERSYST-UMR Qualisud (REU)
  • Chillet Marc, CIRAD-PERSYST-UMR Qualisud (REU)
  • Lechaudel Mathieu, CIRAD-PERSYST-UMR Qualisud (GLP) ORCID: 0000-0002-1108-8357
  • Lugan R., Université d'Avignon et des pays de Vaucluse (FRA)
  • Schorr-Galindo Sabine, UM2 (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/591434/)

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