Differential metabolic rearrangements after cold storage of different peach fruit varieties

MONTI L. L.; VALENTINI G.; LARA M. V.; BUSTAMANTE C. A.; BUDDE C. O.; DRINCOVICH M. F.; GABILONDO J.; FERNIE A.

Córdoba

Congreso; LII Reunión de la Sociedad Argentina de Investigación en Bioquímica y Biología Molecular; 2016

Sociedad Argentina de Investigación en Bioquímica y Biología Molecular (SAIB)

Peaches are highly perishable and deteriorate quickly at ambient temperature. Therefore, refrigeration is commonly used to prevent fruit decay. The molecular changes that take place due to cold storage impacts on the way fruits ripen during the following shelf-life. Few studies have been devoted to the analysis of the overall metabolite reconfiguration during ripening after cold storage of fruits prior to consumption. Metabolite profiling of six peach fruit varieties was performed. Metabolic content after normal ripening and after ripening following cold treatment was compared. Both common and distinct metabolic responses among the six varieties were found; common changes include isomaltose, raffinose and xylose increase; Ser and Phe increase; the polyamine putrescine and spermidine increase; and fumaric acid decrease. Among the differential responses it is interesting to note that the variety Elegant Lady presents a marked increase in sucrose, glucose and fructose sugars; and malic and citric acids, all of them metabolites closely related to the flavor of ripe fruits. Overall, results indicate that peach fruit differential metabolic rearrangements due to cold treatment are variety dependent. The identified metabolic changes that are associated with cold storage may aid in the improvement of peach fruits, with the goal of engineering fruits with higher quality for consumers.