Kaolin Application Modulates Grapevine Photochemistry and Defence Responses in Distinct Mediterranean-Type Climate Vineyards
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Otros documentos de la autoría: Bernardo, Sara; Luzio, Ana; Machado, Nelson; Ferreira, Helena; Vives-Peris, Vicente; Malheiro, Aureliano; Correia, Carlos; Gomez-Cadenas, Aurelio; Moutinho-Pereira, José; Dinis, Lia
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Título
Kaolin Application Modulates Grapevine Photochemistry and Defence Responses in Distinct Mediterranean-Type Climate VineyardsAutoría
Fecha de publicación
2021-03-04Editor
MDPIISSN
2073-4395Cita bibliográfica
Bernardo, S.; Luzio, A.; Machado, N.; Ferreira, H.; Vives-Peris, V.; Malheiro, A.C.; Correia, C.; Gómez-Cadenas, A.; Moutinho-Pereira, J.; Dinis, L.-T. Kaolin Application Modulates Grapevine Photochemistry and Defence Responses in Distinct Mediterranean-Type Climate Vineyards. Agronomy 2021, 11, 477. https://doi.org/10.3390/agronomy11030477Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.mdpi.com/2073-4395/11/3/477Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
At a local scale, kaolin particle-film technology is considered a short-term adaptation strategy to mitigate the adverse effects of global warming on viticulture. This study aims to evaluate kaolin application effects ... [+]
At a local scale, kaolin particle-film technology is considered a short-term adaptation strategy to mitigate the adverse effects of global warming on viticulture. This study aims to evaluate kaolin application effects on photochemistry and related defence responses of Touriga Franca (TF) and Touriga Nacional (TN) grapevines planted at two Portuguese winegrowing regions (Douro and Alentejo) over two summer seasons (2017 and 2018). For this purpose, chlorophyll a fluorescence transient analysis, leaf temperature, foliar metabolites, and the expression of genes related to heat stress (VvHSP70) and stress tolerance (VvWRKY18) were analysed. Kaolin application had an inhibitory effect on VvHSP70 expression, reinforcing its protective role against heat stress. However, VvWRKY18 gene expression and foliar metabolites accumulation revealed lower gene expression in TN-treated leaves and higher in TF at Alentejo, while lipid peroxidation levels decreased in both treated varieties and regions. The positive kaolin effect on the performance index parameter (PIABS) increased at ripening, mainly in TN, suggesting that stress responses can differ among varieties, depending on the initial acclimation to kaolin treatment. Moreover, changes on chlorophyll fluorescence transient analysis were more pronounced at the Douro site in 2017, indicating higher stress severity and impacts at this site, which boosted kaolin efficiency in alleviating summer stress. Under applied contexts, kaolin application can be considered a promising practice to minimise summer stress impacts in grapevines grown in Mediterranean-like climate regions. [-]
Publicado en
Agronomy, 2021, vol. 11, no 3Entidad financiadora
FCT-Portuguese Foundation for Science and Technology | H2020 European Research Council | European Regional Development Fund (FEDER) through NORTE 2020 (Programa Operacional Regional do Norte 2014/2020) | FCT-Portuguese Foundation for Science and Technology
Código del proyecto o subvención
UIDB/04033/2020 | 810176 | NORTE-01-0145-FEDER-000041 | PD/BD/128273/2017 | BPD/INTERACT/VITALITYWINE/184/2016
Proyecto de investigación
info:eu-repo/grantAgreement/EC/H2020/810176Derechos de acceso
info:eu-repo/semantics/openAccess
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