terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Exploring the prevalence of esca-induced leaf symptoms in French vineyards and the role of climate: a national scale analysis

Exploring the prevalence of esca-induced leaf symptoms in French vineyards and the role of climate: a national scale analysis

Abstract

Esca, a severe trunk disease affecting vineyards, is caused by fungal pathogens that induce wood necrosis and decay, leaf symptoms, yield losses, and potentially a rapid death of the vine. The prevalence of this disease varies across years, regions, cultivars, and plot ages. Despite its significance in understanding and predicting dieback risk in different vineyards, the role of climate in trunk diseases remains a relatively unexplored research area. While some studies have demonstrated the impact of certain climatic conditions on the prevalence of the disease, they often focus on a limited number of plots and yield conflicting results.We conducted a statistical analysis, using a Bayesian approach on a national database comprising prevalence data of esca from over 500 different plots in France, spanning the years 2003 to 2022 and encompassing various cultivars. The aim was to identify the climatic risk factors while considering plot-specific factors such as cultivar and age. Climate factors as soil moisture and temperature were assessed with the French climate database SAFRAN.

The results revealed a non-linear relationship between age and esca prevalence, which was dependent on the cultivar. Specifically, we observed that prevalence tends to increase between the ages of 15 and 40 years, varying with the cultivar, and subsequently declined gradually. Furthermore, significant effects were found, particularly indicating an increase in esca prevalence with higher soil moisture levels. Conversely, an increase in average air temperature tends to decrease the prevalence of esca in the field. These results highlighted the importance of climatic factors on esca prevalence.

Acknowledgements: We would thank the Plan National Dépérissement du Vignoble for funding this research. We would thank all the technical partners throughout France who gave us access to their data.

DOI:

Publication date: October 4, 2023

Issue: ICGWS 2023

Type: Article

Authors

Lucas Etienne1*, Lucia Guérin-Dubrana1, Frédéric Fabre1, Elise Frank3, Davide Martinetti2, Lucie Michel3, Valérie Bonnardot4, Chloé Delmas1

1 INRAE, ISVV, Bordeaux Sciences Agro, Santé et Agroécologie du Vignoble, 33140 Villenave d’Ornon, France
2 INRAE, Biostatistiques et Processus Spatiaux, 84000 Avignon, France
3 INRAE, Plateforme ESV, Biostatistiques et Processus Spatiaux, 84914 Avignon, France
4 CNRS, Université Rennes 2, Littoral Environnement Télédétection Géomatique, 35045 Rennes, France

Contact the author*

Keywords

trunk disease, climatic conditions, statistical analysis

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Crown procyanidin quantification in red wines, rosé wines and Port wines

Condensed grape tannins play a major role in the organoleptic properties and quality of red wine. Recently, a new sub-family of macrocyclic condensed tannins has been identified in red wine and named “crown tannins”. Indeed, the first compound of the family identified and characterised by NMR was the crown procyanidin tetramer which is composed of a macrocyclic structure composed of four (-)-epicatechins link together by B-type interflavanoid linkage in the following an alternative sequences of C4-C8 and C4-C6 linkage. The 3D structure of this unusual crown procyanidin family reveals a central cavity in the molecule [1].

Read More

Cumulative effect of deficit irrigation and salinity on vine responses

Climate change is increasing water needs in most of the wine growing regions while reducing the availability and quality of water resources for irrigation. In this context, the sustainability of Mediterranean viticulture depends on grapevine responses to the combinations of water and salt stress. With this aim, this work studies the effects of deficit irrigation and salinity on the physiology of the Tempranillo cultivar (Vitis vinifera L.) grafted onto a drought and salinity tolerant rootstock (1103 Paulsen).

Read More

Evaluation of phenology, agronomic and oenological quality in minority wine varieties in Madrid as a strategy for adaptation to climate change

The main phenological stages (budburst, flowering, veraison, and ripeness) and the fruit composition of 34 Spanish minority varieties were studied to determine their cultivation potential and help winegrowers adapt their production systems to climate change conditions. In total, 4 control cultivars, and 30 minority varieties from central Spain were studied during a period of 3 campaigns, in the ampelographic collection “El Encín”, in Alcalá de Henares, Madrid. Agronomic and oenological characteristics such as yield, and total soluble solids concentration have been monitored.

Read More

Uncovering the interplay between Copper and SO2 tolerance in Saccharomyces cerevisiae

[lwp_divi_breadcrumbs home_text="IVES" use_before_icon="on" before_icon="||divi||400" module_id="publication-ariane" _builder_version="4.20.4" _module_preset="default" module_text_align="center" module_font_size="16px" text_orientation="center"...
Read More

Volatile composition of Cabernet Sauvignon wines from Argentina, Portugal and Spain

Cabernet Sauvignon is one of the most cultivated grape varieties worldwide being grown in different environmental conditions due to its excellent adaptability. Volatile compounds deeply contribute to the sensory properties of wines therefore to wine quality. The aim of this work was to compare the aroma profile of Cabernet Sauvignon wines from different geographical areas and climatic conditions, namely from Argentina, Portugal and Spain, from the vintage 2022. In addition, the volatile composition of the Cabernet Sauvignon Portuguese wines from three vintages was evaluated.

Read More