Raimbault Astrid-Kim, Zuily Fodil Yasmine, Soler Alain, Mora Philippe, Cruz de Carvalho Maria. 2013. The expression patterns of bromelain and AcCYS1 correlate with blackheart resistance in pineapple fruits submitted to postharvest chilling stress. Journal of Plant Physiology, 170 (16) : 1442-1446.
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Quartile : Q1, Sujet : PLANT SCIENCES
Résumé : Blackheart is a physiological disorder induced by postharvest chilling storage during pineapple fruit export shipping. The aim of this study was to check the involvement of bromelain, the cysteine protease protein family abundantly present in pineapple fruits, and AcCYS1, an endogenous inhibitor of bromelain, in the development of blackheart. For this we checked the response to postharvest chilling treatment of two pineapple varieties (MD2 and Smooth Cayenne) differing in their resistance to blackheart. Quantitative RT-PCR analyses showed that postharvest chilling treatment induced a down-regulation of bromelain transcript accumulation in both varieties with the most dramatic drop in the resistant variety. Regarding AcCYS1 transcript accumulation, the varieties showed opposite trends with an up-regulation in the case of the resistant variety and a down-regulation in the susceptible one. Taken together our results suggest that the control of bromelain and AcCYS1 expression levels directly correlates to the resistance to blackheart development in pineapple fruits.
Classification Agris : H50 - Troubles divers des plantes
F60 - Physiologie et biochimie végétale
J11 - Manutention, transport, stockage et conservation des produits d'origine végétale
Champ stratégique Cirad : Axe 3 (2005-2013) - Alimentation accessible et de qualité
Auteurs et affiliations
- Raimbault Astrid-Kim, UPEC (FRA)
- Zuily Fodil Yasmine, UPEC (FRA)
- Soler Alain, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (MTQ)
- Mora Philippe, UPEC (FRA)
- Cruz de Carvalho Maria, UPEC (FRA)
Source : Cirad - Agritrop (https://agritrop.cirad.fr/571035/)
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