terclim by ICS banner
IVES 9 IVES Conference Series 9 Grapevine xylem embolism resistance spectrum reveals which varieties have a lower mortality risk in a future dry climate

Grapevine xylem embolism resistance spectrum reveals which varieties have a lower mortality risk in a future dry climate

Abstract

Wine-growing regions have recently faced intense and frequent droughts that have led to substantial economical losses, and the maintenance of grapevine productivity under warmer and drier climates will rely notably on planting drought-resistant cultivars. Given that plant growth and yield depend on water transport efficiency and maintenance of photosynthesis, thus on the preservation of the vascular system integrity during drought, a better understanding of drought-related hydraulic traits that have a significant impact on physiological processes is urgently needed. We have worked towards this end by assessing vulnerability to xylem embolism in 30 grapevine commercial varieties encompassing red and white Vitis vinifera varieties, hybrid varieties characterized by a polygenic resistance for powdery and downy mildew, and commonly used rootstocks. These analyses further allowed a global assessment of wine regions with respect to their varietal diversity and resulting vulnerability to stem embolism. Hybrid cultivars displayed the highest vulnerability to embolism, while rootstocks showed the greatest resistance. Significant variability also arose among Vitis vinifera varieties, with Ψ12 and Ψ50 values ranging from -0.4 to -2.7 MPa and from -1.8 to -3.4 MPa, respectively. Cabernet franc, Chardonnay and Ugni blanc featured among the most vulnerable varieties while Pinot noir, Merlot and Cabernet Sauvignon ranked among the most resistant. In consequence, wine regions bearing a significant proportion of vulnerable varieties, such as Poitou-Charentes, France and Marlborough, New Zealand, turned out to be at greater risk under drought. These results highlight that grapevine varieties may not respond equally to warmer and drier conditions, outlining the importance to consider hydraulic traits associated with plant drought tolerance into breeding programmes and modeling simulations of grapevine yield maintenance under severe drought. They finally represent a step forward to advise the wine industry about which varieties and regions would have the lowest risk of drought-induced mortality under climate change.

DOI:

Publication date: May 31, 2022

Issue: Terclim 2022

Type: Article

Authors

Laurent J. Lamarque1,2, Chloé E.L. Delmas3, Guillaume Charrier4, Régis Burlett1, Ninon Dell’acqua3, Jérôme Pouzoulet5, Gregory A. Gambetta5 and Sylvain Delzon1

1Université de Bordeaux, INRAE, BIOGECO, Pessac, France
2Département des Sciences de l’Environnement, Université du Québec, Trois-Rivières, Québec, Canada
3SAVE, INRAE, BSA, ISVV, Villenave d’Ornon, France
4INRAE, PIAF, Université Clermont Auvergne, Clermont-Ferrand, France
5EGFV, Univ. Bordeaux, Bordeaux-Sciences Agro, INRAE, ISVV, Villenave d’Ornon, France

Contact the author

Keywords

drought, Vitis, hydraulics, P50, regions at risk, ontogeny

Tags

IVES Conference Series | Terclim 2022

Citation

Related articles…

The importance of rural extension and advisory services to achieve a sustainable viticulture in a climate change scenario

A healthy and dynamic agricultural sector is an important foundation of rural development, generating strong bonds to other economic sectors.

Effect of SO2, glutathione and tannins on Cortese white wine oxidative evolution after different oxygen intakes

In this video recording of the IVES science meeting 2024, Silvia Motta (Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria – Centro di Ricerca Viticoltura ed Enologia, Asti, Italy) speaks about the effect of SO2, glutathione and tannins on Cortese white wine oxidative evolution after different oxygen intakes. This presentation is based on an original article accessible for free on OENO One.

Storia del prosecco e del suo territorio di produzione: un percorso di studi in continuo progresso

Nella realtà viticola Italiana il Prosecco è uno degli esempi più evidenti di un percorso storico che ha saputo valorizzare lo stretto legame tra vitigno e territorio d’origine.

Elevational range shifts of mountain vineyards: Recent dynamics in response to a warming climate

Increasing temperatures worldwide are expected to cause a change in spatial distribution of plant species along elevational gradients and there are already observable shifts to higher elevations as a consequence of climate change for many species. Not only naturally growing plants, but also agricultural cultivations are subject to the effects of climate change, as the type of cultivation and the economic viability depends largely on the prevailing climatic conditions. A shift to higher elevations therefore represents a viable adaptation strategy to climate change, as higher elevations are characterized by lower temperatures. This is especially important in the case of viticulture because a certain wine-style can only be achieved under very specific climatic conditions. Although there are several studies investigating climatic suitability within winegrowing regions or longitudinal shifts of winegrowing areas, little is known about how fast vineyards move to higher elevations, which may represent a viable strategy for winegrowers to maintain growing conditions and thus wine-style, despite the effects of climate change. We therefore investigated the change in the spatial distribution of vineyards along an elevational gradient over the past 20 years in the mountainous wine-growing region of Alto Adige (Italy). A dataset containing information about location and planting year of more than 26000 vineyard parcels and 30 varieties was used to perform this analysis. Preliminary results suggest that there has been a shift to higher elevations for vineyards in general (from formerly 700m to currently 850 m a.s.l., with extreme sites reaching 1200 m a.s.l.), but also that this development has not been uniform across different varieties and products (i.e. vitis vinifera vs hybrid varieties and still vssparkling wines). This is important for climate change adaptation as well as for rural development. Mountain areas, especially at mid to high elevations, are often characterized by severe land abandonment which can be avoided to some degree if economically viable and sustainable land management strategies are available.

Chemical composition of cool-climate Sauvignon blanc grape skins clones during ripening

Sauvignon blanc is the most important variety in cool valleys in central Chile accounting 15,522 ha which corresponds to 42.4% of the cultivated surface with white varieties in Chile