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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2016.01.015
|2 doi
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|a pubmed24n0857.xml
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|a (DE-627)NLM257232184
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|a (NLM)26851572
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|a (PII)S0981-9428(16)30014-6
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Giordano, Debora
|e verfasserin
|4 aut
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|a Characterization of a multifunctional caffeoyl-CoA O-methyltransferase activated in grape berries upon drought stress
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 13.12.2016
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|a Date Revised 10.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2016 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
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|a Drought stress affects anthocyanin accumulation and modification in vegetative and reproductive plant tissues. Anthocyanins are the most abundant flavonoids in grape (Vitis vinifera L.) coloured berry genotypes and are essential markers of grape winemaking quality. They are mostly mono- and di-methylated, such modifications increase their stability and improve berry quality for winemaking. Anthocyanin methylation in grape berries is induced by drought stress. A few caffeoyl-CoA O-methyltransferases (CCoAOMTs) active on anthocyanins have been described in grape. However, no drought-activated O-methyltransferases have been described in grape berries yet. In this study, we characterized VvCCoAOMT, a grapevine gene known to induce methylation of CoA esters in cultured grape cells. Transcript accumulation of VvCCoAOMT was detected in berry skins, and increased during berry ripening on the plant, and in cultured berries treated with ABA, concomitantly with accumulation of methylated anthocyanins, suggesting that anthocyanins may be substrates of this enzyme. Contrary as previously observed in cell cultures, biotic stress (Botrytis cinerea inoculation) did not affect VvCCoAOMT gene expression in leaves or berries, while drought stress increased VvCCoAOMT transcript in berries. The recombinant VvCCoAOMT protein showed in vitro methylating activity on cyanidin 3-O-glucoside. We conclude that VvCCoAOMT is a multifunctional O-methyltransferase that may contribute to anthocyanin methylation activity in grape berries, in particular under drought stress conditions
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Anthocyanins
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|a Berry ripening
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|a Botrytis cinerea
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|a Drought stress
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|a Grapevine
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|a O-methyltransferases
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|a Anthocyanins
|2 NLM
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|a Plant Proteins
|2 NLM
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| 650 |
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|a Methyltransferases
|2 NLM
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|a EC 2.1.1.-
|2 NLM
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| 650 |
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|a caffeoyl-CoA O-methyltransferase
|2 NLM
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| 650 |
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|a EC 2.1.1.104
|2 NLM
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| 700 |
1 |
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|a Provenzano, Sofia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ferrandino, Alessandra
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vitali, Marco
|e verfasserin
|4 aut
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1 |
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|a Pagliarani, Chiara
|e verfasserin
|4 aut
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|a Roman, Federica
|e verfasserin
|4 aut
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|a Cardinale, Francesca
|e verfasserin
|4 aut
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|a Castellarin, Simone D
|e verfasserin
|4 aut
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| 700 |
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|a Schubert, Andrea
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 101(2016) vom: 01. Apr., Seite 23-32
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:101
|g year:2016
|g day:01
|g month:04
|g pages:23-32
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|u http://dx.doi.org/10.1016/j.plaphy.2016.01.015
|3 Volltext
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|d 101
|j 2016
|b 01
|c 04
|h 23-32
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