Post-veraison sunlight exposure induces MYB-mediated transcriptional regulation of anthocyanin and flavonol synthesis in berry skins of Vitis vinifera

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dc.contributor.authorThomas Matus, Jose
dc.contributor.authorLoyola, Rodrigo
dc.contributor.authorVega, Andrea
dc.contributor.authorPena Neira, Alvaro
dc.contributor.authorBordeu, Edmundo
dc.contributor.authorArce Johnson, Patricio
dc.contributor.authorAntonio Alcalde, Jose
dc.date.accessioned2024-01-10T13:16:25Z
dc.date.available2024-01-10T13:16:25Z
dc.date.issued2009
dc.description.abstractAnthocyanins, flavan-3-ols, and flavonols are the three major classes of flavonoid compounds found in grape berry tissues. Several viticultural practices increase flavonoid content in the fruit, but the underlying genetic mechanisms responsible for these changes have not been completely deciphered. The impact of post-veraison sunlight exposure on anthocyanin and flavonol accumulation in grape berry skin and its relation to the expression of different transcriptional regulators known to be involved in flavonoid synthesis was studied. Treatments consisting of removing or moving aside the basal leaves which shade berry clusters were applied. Shading did not affect sugar accumulation or gene expression of HEXOSE TRANSPORTER 1, although in the leaf removal treatment, these events were retarded during the first weeks of ripening. Flavonols were the most drastically reduced flavonoids following shading and leaf removal treatments, related to the reduced expression of FLAVONOL SYNTHASE 4 and its putative transcriptional regulator MYB12. Anthocyanin accumulation and the expression of CHS2, LDOX, OMT, UFGT, MYBA1, and MYB5a genes were also affected. Other regulatory genes were less affected or not affected at all by these treatments. Non-transcriptional control mechanisms for flavonoid synthesis are also suggested, especially during the initial stages of ripening. Although berries from the leaf removal treatment received more light than shaded fruits, malvidin-3-glucoside and total flavonol content was reduced compared with the treatment without leaf removal. This work reveals that flavonol-related gene expression responds rapidly to field changes in light levels, as shown by the treatment in which shaded fruits were exposed to light in the late stages of ripening. Taken together, this study establishes MYB-specific responsiveness for the effect of sun exposure and sugar transport on flavonoid synthesis.
dc.description.funderChilean Wine Consortium
dc.description.funderFruit Consortium
dc.description.funder07Genoma01
dc.description.funderMillennium Nucleus for Plant Functional Genomics
dc.description.funderFONDECYT
dc.description.funderMECESUP
dc.description.funderCONICYT
dc.fechaingreso.objetodigital2024-04-26
dc.format.extent15 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/jxb/ern336
dc.identifier.eissn1460-2431
dc.identifier.issn0022-0957
dc.identifier.pubmedidMEDLINE:19129169
dc.identifier.urihttps://doi.org/10.1093/jxb/ern336
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78583
dc.identifier.wosidWOS:000264189900015
dc.information.autorucAgronomía e Ing. Forestal;Alcalde JA ;S/I;59411
dc.information.autorucCiencias Biológicas;Arce-Johnson P ;S/I;54718
dc.information.autorucAgronomía e Ing. Forestal;Bordeu E;S/I;99414
dc.information.autorucCiencias Biológicas;Loyola R ;S/I;142333
dc.information.autorucCiencias Biológicas;Matus JT ;S/I;15841
dc.information.autorucAgronomía e Ing. Forestal;Vega A;S/I;10777
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final867
dc.pagina.inicio853
dc.publisherOXFORD UNIV PRESS
dc.revistaJOURNAL OF EXPERIMENTAL BOTANY
dc.rightsacceso abierto
dc.subjectbHLH
dc.subjectflavonoids
dc.subjectgrape
dc.subjectleaf removal
dc.subjectMYB12
dc.subjectPAR
dc.subjectsugar
dc.subjectsource
dc.subjectsink
dc.subjectWDR
dc.subjectSUCROSE-SPECIFIC INDUCTION
dc.subjectMAIPO VALLEY CHILE
dc.subjectGRAPE BERRY
dc.subjectARABIDOPSIS-THALIANA
dc.subjectEXPRESSION ANALYSIS
dc.subjectCABERNET-SAUVIGNON
dc.subjectGENE-EXPRESSION
dc.subjectPHYTOCHROME PHOTOTRANSDUCTION
dc.subjectDIFFERENTIAL REGULATION
dc.subjectSIGNAL-TRANSDUCTION
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titlePost-veraison sunlight exposure induces MYB-mediated transcriptional regulation of anthocyanin and flavonol synthesis in berry skins of Vitis vinifera
dc.typeartículo
dc.volumen60
sipa.codpersvinculados59411
sipa.codpersvinculados54718
sipa.codpersvinculados99414
sipa.codpersvinculados142333
sipa.codpersvinculados15841
sipa.codpersvinculados10777
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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