Abiotic stresses differentially affect the expression of 0-methyltransferase genes related to methoxypyrazine biosynthesis in seeded and parthenocarpic fruits of Vitis vinifera (L.)

dc.creatorVallarino, JG.
dc.creatorGainza-Cortes, F.
dc.creatorVerdugo-Alegria, C.
dc.creatorGonzalez, E.
dc.creatorMoreno, YM.
dc.date2014-12-23T14:54:00Z
dc.date2014-12-23T14:54:00Z
dc.date2014-07-01
dc.date.accessioned2017-03-07T15:02:06Z
dc.date.available2017-03-07T15:02:06Z
dc.identifierFOOD CHEMISTRY Volumen: 154 Páginas: 117-126
dc.identifier1873-7072
dc.identifierhttp://dspace.utalca.cl/handle/1950/10209
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/377101
dc.descriptionUniv Talca, Fac Ciencias Agr, Ctr Tecnol Vid & Vino, Talca, Chile; Vallarino, JG (Vallarino, Jose G.); Verdugo-Alegria, C (Verdugo-Alegria, Claudio); Moreno, YM (Moreno, Yerko M.)
dc.descriptionMPs (3-alkyl-2-methoxypyrazines) are grape-derived aroma compounds that are associated with detrimental herbaceous flavours in some wines. It is well known that several viticultural and environmental parameters can modulate MP concentrations in grapes, although comprehensive molecular studies have not been conducted in this field. Although the biosynthesis pathway of MPs has not been fully elucidated, four Vitis vinifera 0-methyltransferase genes (VvOMT1-4) have been related to be involved in MP biosynthesis. We assessed whether different abiotic stresses induction have an impact on MP levels in grapes and wines from seeded and parthenocarpic fruits. Our results show that the timing of VvOMT3 expression is associated with the period of MPs accumulation in seeded fruits during both abiotic stresses, whereas no association was found in parthenocarpic fruits. These results are discussed in the context of how different viticultural practices can modulate VvOMT gene expression, which has a direct impact on MPs levels in wines. (C) 2014 Elsevier Ltd. All rights reserved.
dc.languageen
dc.publisherELSEVIER SCI LTD
dc.subjectVitis vinifera
dc.subjectVvOMT
dc.subjectAbiotic stress
dc.subjectParthenocapy Methoxypyrazine
dc.subjectWine flavour
dc.subjectMethyl transferase
dc.titleAbiotic stresses differentially affect the expression of 0-methyltransferase genes related to methoxypyrazine biosynthesis in seeded and parthenocarpic fruits of Vitis vinifera (L.)
dc.typeArtículos de revistas


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