terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Exploring the genetic diversity of leaf flavonoids content in a set of Iberian grapevine cultivars: preliminary results

Exploring the genetic diversity of leaf flavonoids content in a set of Iberian grapevine cultivars: preliminary results


The use of grapevine genetic diversity is a way to mitigate the negative impacts of climate change on viticulture systems. Leaf epidermal flavonoids (including flavonols and anthocyanins) are involved in plant defense mechanisms against environmental stresses, like high temperatures or excessive solar radiation [1,2]. Among other factors, they modulate light absorption, which reduces photoinhibition processes in photosynthetic tissues [1]. Therefore, the identification of grapevine cultivars with an increased content on leaf epidermal flavonoids arises as a potential avenue to improve grapevine tolerance to some detrimental environmental stresses. Here, we analyzed the content in leaf flavonols and leaf anthocyanins at full-veraison in 63 genetically diverse grapevine cultivars from different Iberian regions grown under the same conditions by two alternative optical sensors (Dualex and MPM-100). Both non-invasive systems proved to be able of estimating leaf epidermal flavonoids content in a wide set of cultivars of high genetic diversity, providing highly-correlated results. Whilst we observed a moderate range of variation for leaf flavonols (they were found to vary by a 1.5-fold factor), a higher range of variation was observed for leaf anthocyanins, which varied by a 15.0-fold factor. In addition, this screening allowed us to detect some cultivars with a significant higher content on leaf epidermal flavonols than some widely extended grapevine cultivars, suggested as potential candidates with better adaptation capacity to the expected conditions due to climate change.

Acknowledgements: This work is part of the project “Diversidad genética en la vid y adaptación al cambio climático” (PID2020-120183RB-I00), funded by MCIN/AEI/10.13039/501100011033.


1)  Steyn, W.J. et al. (2002) Anthocyanins in vegetative tissues: a proposed unified function in photoprotection. New Phytol., 155: 349-361, DOI 10.1046/j.1469-8137.2002.00482.x 

2)  Daryanavard, H.et al. (2023) Flavonols modulate plant development, signaling, and stress responses. Curr. Opin. Plant Biol., 72: 102350, DOI: 10.1016/j.pbi.2023.102350


Publication date: October 6, 2023

Issue: ICGWS 2023

Type: Poster


Javier Tello1*, Yolanda Ferradás1,2, Javier Ibáñez1

1 Instituto de Ciencias de la Vid y del Vino, Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño
2 Facultad de Biología, Universidad de Santiago de Compostela, 15872 Santiago de Compostela

Contact the author*


anthocyanins, climate change, flavonols, non-invasive phenotyping, Vitis vinifera


2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series


Related articles…

Survey of pesticide residues in vineyard soils from the Denomination of Origin Ribeiro

Vineyards from mild temperature, high humidity locations receive often treatments with fungicides to prevent damages produced by fungi responsible for mildium, oidium and botrytis infections. In addition, insecticides are also applied to vineyards to fight again pests, which affect directly, or indirectly (as vectors of different diseases), their productivity. A fraction of the above compounds reaches the soil of vineyards, either during application, or when released from the canopy of vines due to rain-wash-off. Thereafter, depending on soil conditions (pH, organic matter) and environmental variables (regimen of rain, slope of vineyards), they might persist in this compartment, be degraded and/or transferred to water masses, modifying the biodiversity of soils and/or affecting the quality of water reservoirs.

Role of anthocyanins and copigmentation in flavonol solubility in red wines 

Over the last years, due to climate change, several red wines, such as the Sangiovese wines, have been often subjected to loss of clarity due to the formation of deposits of fine needle-shaped crystals. This phenomenon turned out to be due to an excess of quercetin (Q) and its glycosides (Q-Gs) in wines. These compounds are synthesized to a large extent when grapes are excessively exposed to UVB radiations in vineyards[1]. Unfortunately, it is not easy to predict the degree of Q precipitation because its solubility strongly depends on the wine and matrix composition[2].

Metatranscriptomic analysis of “aszú” berries: the potential role of the most important species of the grape microbiota in the aroma of wines with noble rot

Botrytis cinerea has more than 1200 host plants and is one of the most important plant pathogens in viticulture. Under certain environmental conditions, it can lead to the development of a noble rot, which results in a specific metabolic profile, altering physical texture and chemical composition. The other microbes involved in this process and their functional genes are poorly characterised. We have generated metatranscriptomic [1,2] and DNA metabarcoding data from three months of the Furmint grape variety, representing the four phases of noble rot, from healthy berries to completely dried berries.

Phenotyping bud break and trafficking of dormant buds from grafted vine

In grapevine, phenology from bud break to berry maturation, depends on temperature and water availability. Increases in average temperatures accelerates initiation of bud break, exposing newly formed shoots to detrimental environmental stresses. It is therefore essential to identify genotypes that could delay phenology in order to adapt to the environment. The use of different rootstocks has been applied to change scion’s characteristics, to adapt and resist to abiotic and biotic stresses[1].

Evaluation of terroir suitability for vine cultivation in new areas using geographic multi-criteria decision support

Based on historical vine cultivation, the recent development of wine production in Drama wine region (Greece) has led to vine cultivation expansion of white and red varieties. The current cultivation of 500 ha of vineyards is expected to increase in the coming years. Natural terroir units (NTU) have been designed recently to support the production of high quality wines in the region [1]. The aim of this work is to evaluate the relevancy of the proposed NTUs regarding their suitability to produce wines of specific sensorial identity, and to provide guidelines for correct site selection for the expanding wine industry of the region.