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Appl. Sci. 2015, 5(4), 1955-1969; doi:10.3390/app5041955

Main Leaf Polyphenolic Components of Berry Color Variant Grapevines and Their Acclimative Responses to Sunlight Exposure

1
Department of Plant Biology, University of Pécs, 6 Ifjúság, Pécs 7624, Hungary
2
Department of Applied Chemistry, Corvinus University of Budapest, 29-43 Villányi, Budapest 1118, Hungary
3
Cellular Imaging Laboratory, Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, Szeged 6701, Hungary
4
Research Institute for Viticulture and Oenology, University of Pécs, 4 Pázmány P, Pécs 7632, Hungary
*
Author to whom correspondence should be addressed.
Academic Editor: Helmut Hugel
Received: 12 March 2015 / Revised: 12 June 2015 / Accepted: 23 June 2015 / Published: 18 December 2015
View Full-Text   |   Download PDF [801 KB, uploaded 18 December 2015]   |  

Abstract

Grapevine leaf synthesizes a wide variety of bioactive secondary metabolites, including polyphenols, which are also key components in ensuring development and growth of the whole plant even under adverse environmental conditions. Our study evaluates the nonanthocyanin polyphenolic composition in grapevine leaves of three varieties of Gohér conculta (Vitis vinifera L.) native to Hungary. A high performance liquid chromatography (HPLC) system including a diode array detector (DAD) coupled to a time-of-flight mass spectrometer (q-TOFMS) was successfully applied to profile intact glycoconjugate forms in samples. In-source fragmentation was utilized in order to provide structural information on the compounds. Using this method, the presence of 16 polyphenolic metabolites were confirmed, and eight of them were subjected to further quantification in sun acclimated and half shaded leaves. Intracellular microimaging detected accumulation of flavonols in cell nuclei, cell wall and chloroplasts. Our findings demonstrated that Gohér conculta—a special grapevine taxon of our viticultural heritage with berry color variants—is a suitable model to study the interaction between genetic and environmental factors in determination of grapevine phenolic composition. View Full-Text
Keywords: grapevine leaves; polyphenolic profile; HPLC-ESI-qTOFMS; fluorescence microimaging; sunlight acclimation grapevine leaves; polyphenolic profile; HPLC-ESI-qTOFMS; fluorescence microimaging; sunlight acclimation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kocsis, M.; Abrankó, L.; Ayaydin, F.; Csepregi, K.; Papp, N.; Teszlák, P.; Jakab, G. Main Leaf Polyphenolic Components of Berry Color Variant Grapevines and Their Acclimative Responses to Sunlight Exposure. Appl. Sci. 2015, 5, 1955-1969.

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