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Preharvest UV-C treatment affected postharvest senescence and phytochemicals alternation of strawberry fruit with the possible involvement of abscisic acid regulation

Author:
Xu, Yanqun, Charles, Marie Thérèse, Luo, Zisheng, Mimee, Benjamin, Tong, Zhichao, Roussel, Dominique, Rolland, Daniel, Véronneau, Pierre-Yves
Source:
Food chemistry 2019 v.299 pp. 125138
ISSN:
0308-8146
Subject:
abscisic acid, ambient temperature, fruit quality, fruits, physiology, polyphenols, postharvest storage, storage temperature, strawberries, ultraviolet radiation
Abstract:
As an environmentally friendly approach for fruit quality improvement, the effect of preharvest UV-C on the physiology of strawberry fruit during postharvest storage remains to be assessed. Strawberry fruit developed with supplementary UV-C were stored at room temperature for 2 weeks. Preharvest UV-C attenuated fruit postharvest senescence and altered phytochemicals composition. Higher ester titer was found in the treated fruit at harvest, whereas higher terpene and furanone contents were detected after 72 h of storage. At harvest, polyphenolics accumulated to a higher level in UV-C group, but the difference disappeared after 24 h of storage. Meanwhile, the intrinsic level of abscisic acid and the expressions of FaPYR1, SnRK2, and FaASR in the UV-C-treated fruit was enhanced at harvest but returned to a lower level as storage proceeded. This study highlights the time-dependent effect of preharvest UV-C on strawberry fruit postharvest biochemical indexes and the possible involvement of abscisic acid signaling factors.
Agid:
6510178