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  • Title: Proteomic analysis of differentially accumulated proteins during ripening and in response to 1-MCP in papaya fruit.
    Author: Huerta-Ocampo JÁ, Osuna-Castro JA, Lino-López GJ, Barrera-Pacheco A, Mendoza-Hernández G, De León-Rodríguez A, Barba de la Rosa AP.
    Journal: J Proteomics; 2012 Apr 03; 75(7):2160-9. PubMed ID: 22285629.
    Abstract:
    Papaya (Carica papaya L.) is a climacteric fruit susceptible to postharvest losses due to the ethylene-induced ripening. The inhibitor of ethylene action, 1-methylcyclopropene (1-MCP), has been used worldwide as a safe postharvest non-toxic agent, but the physiological and biochemical modifications induced by 1-MCP are not well understood. Using the 2-DE analysis, we report the changes in the protein profiles after 6 and 18 days of postharvest and the effect of the effect of 1-MCP treatment on fruits. Twenty seven protein spots showing differences in abundance during ripening were successfully identified by nano-LC-ESI/MS/MS. Some spots corresponded to the cell wall degrading enzymes related to fruit ripening; others were involved in oxidative damage protection, protein folding, and cell growth and survival that were induced by 1-MCP. This is the first proteomic report analyzing the effect of 1-MCP in papaya ripening. The present data will help to shed light on papaya fruit ripening process.
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