terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Towards a better understanding of cultivar susceptibility to esca disease: results from a pluriannual common garden monitoring

Towards a better understanding of cultivar susceptibility to esca disease: results from a pluriannual common garden monitoring

Abstract

Grapevine (Vitis vinifera L.) exhibits a high level of genetic and phenotypic diversity among the approximately 6000 cultivars recorded. This perennial crop is highly vulnerable to numerous fungal diseases, including esca, which is a complex vascular pathology that poses a significant threat to the wine sector, as there is currently no cost-efficient curative method[1]. In this context, an effective approach to mitigate the impact of such diseases is by leveraging the crop’s genetic diversity. Indeed, susceptibility to esca disease appears to vary between cultivars, under artificial or natural infection. However, the mechanisms and varietal characteristics underlying cultivar susceptibility to esca are still unknown.

In this study, we monitored the expression of esca disease foliar symptom at the plant level for six years, on 46 cultivars planted in an experimental common garden in Bordeaux[2]. First, a large gradient of varietal susceptibility was highlighted, with an average prevalence ranging from 0 to 24% of vines expressing esca foliar symptom per variety. This gradient was rather consistent across vintages, and the prevalence of grapevine dieback was significantly correlated with that of the leaf symptoms.

Secondly, we explored the relationships between esca disease prevalence and phenological and physiological traits phenotyped in the same plot. A negative correlation between δ13C and esca disease prevalence was demonstrated at the cultivar level, suggesting that varieties with higher water use efficiency are less prone to express esca. Moreover, our results suggest that low-vigour cultivars could be classified among the less susceptible ones, although these trends require further investigation. In contrast, neither phenological stages nor nitrogen status seem to be significant predictors of cultivar susceptibility to the disease.

Together, these results provide new insights into the potential of genetic resources for sustainable trunk diseases management, while opening up new perspectives for studying pathological and physiological determinants of their incidence.

Acknowledgements:

The authors would like to thank the teams from UE Vigne Bordeaux, SAVE and EGFV. This long-term monitoring was supported by the French Ministère de l’Enseignement Supérieur et de la Recherche, Château-Figeac (Saint-Emilion), PNDV (FranceAgrimer-CNIV), CIVB, Région Nouvelle-Aquitaine & INRAE.

References:

1) Gramaje D. et al. (2018) Managing Grapevine Trunk Diseases With Respect to Etiology and Epidemiology: Current Strategies and Future Prospects. Plant Disease, 102: 12-39, DOI 10.1094/PDIS-04-17-0512-FE

2) Destrac-Irvine A. and van Leeuwen C. (2016) VitAdapt: an experimental program to study the behavior of a wide range of Vitis vinifera varieties in a context of climate change in the Bordeaux vineyards.Climwine, sustainable grape and wine production in the context of climate change, 11-13 April 2016, Bordeaux. Full text proceedings paper, 165-171.

DOI:

Publication date: October 4, 2023

Issue: ICGWS 2023

Type: Article

Authors

Pierre GASTOU1,2*, Agnès DESTRAC IRVINE3, Cornelis VAN LEEUWEN3, Chloé DELMAS1

1SAVE, INRAE, Bordeaux Sciences Agro, ISVV, F-33882 Villenave d’Ornon, France
2Département Sciences de l’Environnement, Univ. Bordeaux, F-33405 Talence, France

3EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882 Villenave d’Ornon, France

Contact the author*

Keywords

Grapevine Trunk Disease, multi-trait phenotyping, pathogenicity, phenotypic diversity, Vitis vinifera

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

New varieties descendant from Monastrell with lower sugar and high phenolic content adapted to warm climates

Given that climate change is a continuous process, it is necessary to constantly search for new strategies that help the viticulturist sector to mitigate its consequences. All adaptation strategies will have a greater or lesser effect that in turn will be marked by the times of action. As a long-term action, a genetic breeding program to obtain new varieties descendant from Monastrell has been developed in the Region of Murcia (more specifically, in the IMIDA Research Center) since 1997. In this program, new red varieties have been developed through directed crosses of the Monastrell variety with other varieties such as Cabernet Sauvignon, Tempranillo and Syrah.

The colour pattern of flower arrangements influence wine tasters’ sensory description

The arrangements of flowers and wine counterparts are inextricably linked. Whether a fundamental aspect of tablescaping or acolytes to broader entertainment rituals, they have an entangled history since ancient times. The aim of this contribution is to verify the influence of visually delicate and robust flower arrangements on individual description of wines. Changes in the sensory description of wines were investigated during subjects’ (thirty-two participants) exposure to three different conditions: the presence of delicate, robust, or totally absent flower arrangements. In each condition, the same two wines were blind tasted: a wine previously defined as delicate – a Pinot Noir from Australia, and a wine known for its robust character – a Tannat from Uruguay.

High-throughput screening of physical-mechanical berry skin traits facilitates targeted selection of breeding material with resistance to Botrytis bunch rot and grape sunburn

The ongoing climate change implies an increasing mean air temperature, which is signified by weather extremes or sudden changes between drought and local heavy rainfalls. These changing conditions are especially challenging for the established grapevine varieties growing under cool climate conditions due to an increased risk for fungal diseases like downy mildew (DM) and Botrytis bunch rot (BBR) as well as for grape sunburn. To meet that demand, the scope of most grapevine breeding programs is the selection of mildew fungus-resistant and climatic adapted grapevines with balanced, healthy yield and outstanding wine quality.

The use of plasma activated water in barrel disinfection: impact on oak wood composition

The use of barrels is a practice that improves the quality of wines. The porous structure of wood favors the accumulation of microorganisms that can deteriorate the quality of wines so that barrel cleaning and sanitizing treatments are essential. The burning of sulphur discs has been the most common practice in winemaking because ots biocide effect. Nevertheless, its effectiveness is still insufficient and it is harmful for human health.

How are canned wine drinkers perceived? An investigation involving Swiss nationals and different scenarios of outdoor leisure activities

This study examines how people who consume wine in cans are perceived in terms of their basic personality characteristics, helps understand the role of cultural background on people’s perception, and verify the role played by the consumption context on the perception. Our hypothesis is that prejudice and negative attitudes towards wine in cans might exert a negative effect on the evaluation of people who consume canned wine. To evaluate this hypothesis, the consumption of wine in cans was evoked in four different contexts of use during outdoor leisure activity (beach resort, ski resort, desert safari, and party). In order to examine the effect of culture on subject’s response we use participants from Switzerland, a country where three different cultures, associated with three different languages, cohabit.