Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 61, Issue 37, Pages 8976-8986Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf4030757
Keywords
metabolic profiling; canopy microclimate manipulation; leaf removal; preflowering leaf removal; secondary metabolism; phenolics; 'Pinot flair' (Vitis vinifera L.)
Funding
- Creative Core program (AHA-MOMENT) [3330-13-500031]
- RS-MIZS
- European Regional Development Fund Research
- European Union through the European Social Fund
- ADP 2012 project
- Autonomous Province of Trento
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Canopy microclimate manipulation can have a significant effect on grapevine gene expression and can thus affect the yield of many important berry compounds. Focusing on only a few targeted phenolics in the past, advanced multimethod analytical approaches are opening up much wider possibilities to fill in the gaps of missing knowledge about plant secondary metabolism. Different leaf removal timings, leading to different microclimate scenarios, were thus introduced in a 'Pinot noir' vineyard to reveal related alterations of multiple classes of skin phenolics, including some rarely studied to date. Different accumulation trends during cluster development were detected not only between groups but also between individual compounds within groups. Although many significant changes were observed early in the season, these were later often less significant. However, at harvest, 31 of 72 detected compounds showed significant differences in comparison to control for at least one of three leaf removal approaches.
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