Differential metabolic rearrangements after cold storage of different peach fruit varieties

MONTI, LAURA; BUSTAMANTE, CLAUDIA; GABILONDO, JULIETA; VALENTINI, GABRIEL; BUDDE, CLAUDIO OLAF; FERNIE, ALISDAIR R; LARA, MARÍA VALERIA; DRINCOVICH, MARÍA FABIANA

Córdoba

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

Sociedad Argentina de Investigación Bioquímica y Biología Molecular (SAIB)

Peaches are highly perishable and deteriorate quickly atambient temperature. Therefore, refrigeration is commonly usedto prevent fruit decay. The molecular changes that take placedue to cold storage impacts on the way fruits ripen during thefollowing shelf-life.Few studies have been devoted to theanalysis of the overall metabolite reconfiguration duringripening after cold storage of fruits prior to consumption.Metabolite profiling of six peach fruit varieties was performed.Metabolic content after normal ripening and after ripeningfollowing cold treatment was compared. Both common anddistinct metabolic responses among the six varieties werefound;136common changes include isomaltose, raffinose andxylose increase; Ser and Phe increase; the polyamineputrescine and spermidine increase; and fumaric aciddecrease. Among the differential responses it is interesting tonote that the variety Elegant Lady presents a marked increasein sucrose, glucose and fructose sugars; and malic and citricacids, all of which are closely related to the flavor of ripe fruits.Overall, results indicate that peach fruit differential metabolicrearrangements due to cold treatment are variety dependent.The identified metabolic changes that are associated with coldstorage may aid in the improvement of peach fruits, with thegoal of engineering fruits with higher quality for consumers.