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Influence of pruning time and viral infection on stilbenoid levels in Pinot noir grape canes
Author(s) -
S De Bona Gicele,
Bertazzon Nadia,
Angelini Elisa,
Vincenzi Simone
Publication year - 2020
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10195
Subject(s) - piceatannol , pruning , cane , horticulture , resveratrol , vitis vinifera , cold storage , chemistry , botany , biology , food science , sugar , biochemistry
Abstract BACKGROUND Grapevine canes represent a large source of waste derived from grape cultivation. In the present study, the effect of different processes of storage and different pruning times on the stilbene accumulation on Pinot noir canes was analyzed. Whether the alteration of the secondary metabolism accompanying leafroll symptom expressions could affect the stilbenoid accumulation in canes harvested at pruning time was also investigated. RESULTS The maximum accumulation of trans ‐resveratrol and trans ‐piceatannol was obtained in canes harvested in October and dried at 40 °C. Even in grape canes harvested in October, November, and December and stored for different times at room temperature (20 ± 2 °C) a marked increase in trans ‐resveratrol and trans ‐piceatannol was evident, which reached a maximum at around 8 weeks of storage. A significant higher accumulation of trans ‐resveratrol and trans ‐piceatannol was also found in canes harvested from symptomatic plants compared to those harvested from asymptomatic plants for all the pruning times. CONCLUSION This study confirms that the biosynthetic enzyme activities and, particularly, those involved in the stilbene pathway, persist during Pinot noir cane storage at different harvest times, with different storage times and conditions, and different sanitary status. © 2019 Society of Chemical Industry