La diversité des vignobles français face au changement climatique : simulations climatiques et prospective participative

Ollat, Nathalie; Zito, Sébastien; Richard, Yves; Aigrain, Patrick; Brugière, Françoise; Duchêne, Éric; Cortázar-Atauri, I. García de; Gautier, Jacques; Giraud-Héraud, Éric; Hannin, Hervé; Touzard, Jean-Marc; Bois, Benjamin

doi:10.1051/climat/202118003

Cited by 3 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Environmental stresses often occur simultaneously under field conditions [ 20 , 21 ]. The frequency of the occurrence of heat waves, extreme precipitation events, and droughts is likely to increase according to the recent consensus scenario of climate change (IPCC 2014), especially in grapevine growing areas [ 22 , 23 ]. Furthermore, the development of irrigation strategies aimed at ensuring grape quality while saving water resources sets vines on the edge of water stress and might make them more susceptible to heat stress [ 24 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

The Combination of Both Heat and Water Stresses May Worsen Botryosphaeria Dieback Symptoms in Grapevine

Fernández

Lemaître‐Guillier

Songy

et al. 2023

Plants

View full text Add to dashboard Cite

(1) Background: Grapevine trunk diseases (GTDs) have become a global threat to vineyards worldwide. These diseases share three main common features. First, they are caused by multiple pathogenic micro-organisms. Second, these pathogens often maintain a long latent phase, which makes any research in pathology and symptomatology challenging. Third, a consensus is raising to pinpoint combined abiotic stresses as a key factor contributing to disease symptom expression. (2) Methods: We analyzed the impact of combined abiotic stresses in grapevine cuttings artificially infected by two fungi involved in Botryosphaeria dieback (one of the major GTDs), Neofusicoccum parvum and Diplodia seriata. Fungal-infected and control plants were subjected to single or combined abiotic stresses (heat stress, drought stress or both). Disease intensity was monitored thanks to the measurement of necrosis area size. (3) Results and conclusions: Overall, our results suggest that combined stresses might have a stronger impact on disease intensity upon infection by the less virulent pathogen Diplodia seriata. This conclusion is discussed through the impact on plant physiology using metabolomic and transcriptomic analyses of leaves sampled for the different conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

The Combination of Both Heat and Water Stresses May Worsen Botryosphaeria Dieback Symptoms in Grapevine

Fernández

Lemaître‐Guillier

Songy

et al. 2023

Plants

View full text Add to dashboard Cite

show abstract

“…Our research underscores how the designation of plots under speci c wine labels (PDO and PGI) shapes the entire plantation system in Languedoc-Roussillon vineyards. Although both labels face climatic in uences and encounter yield losses below label yield thresholds, they differ in their economic objectives (Ollat et al, 2021). Generally, PDO-labeled plots strive for typicity and sensory distinctiveness to maximize bottle prices, whereas PGI-labeled plots primarily focus on yield and cover fewer quality segments (Alonso Ugaglia et al, 2019).…”

Section: Discussion and Perspectivesmentioning

confidence: 99%

How choices in plant material and plantation practices (variety, rootstock, planting density and vine age) affect grapevine yield for main wine labels. Analysis of a big dataset from surveys to winegrowers in Languedoc-Roussillon.

Fernandez-Mena,

Gautier,

Metay

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

In vineyards, decisions regarding plant material and plantation practices are crucial for winegrowers when planning future vine plots. These choices often navigate within the bounds set by wine labels and are contingent upon a spectrum of management options. However, the comprehensive influence of these decisions on grapevine yield at a large scale remains a relatively unexplored domain. A deeper understanding of how plant material and planting strategies impact grapevine yield stands as a potential avenue for mitigating yield losses, especially exacerbated by the repercussions of climate change, thereby ensuring sustainable wine production. In this study, we employed random plot data from national surveys conducted among winegrowers in the Languedoc-Roussillon viticultural region (n = 3507). Our analysis focused on examining the relationship between grapevine yield and: i. plant material (varieties, rootstocks); ii. plantation practices (planting density, vine age); considering diverse vineyard management approaches (wine label, organic management, irrigation). Data analysis encompassed graphical observations, statistical tests, and modeling to evaluate the impact of these factors on grapevine yield. Our findings indicate that most cultivated varieties exhibited similar yield levels for the same type of wine label. Notably, SO4 rootstock displayed the best yield performance across multiple cultivated varieties. The combined influence of vine age and wine label explained up to 40% of the total yield variance. We observed a minor adverse effect of vine aging on grapevine yield, particularly in highly productive vineyards under the PGI wine label. However, the impact of vine age on yield in PDO wine plots was almost negligible. Organic management did also demonstrate an influence on yield. Unexpectedly, planting density did not significantly affect yield. These results underscore the significance of conducting real winegrowers' big data analysis at a regional level, particularly in connection with wine label and management choices.

show abstract

“…In addition, it must be considered that the bunches are quite sensitive to high temperatures and that, in situations of severe stress, they could reach temperatures up to 15 °C higher than the air due to lack of transpiration. Likewise, there is an indicator, such as the number of days with maximum temperatures above 35 ºC, which is being intensified with climate change, correlating to a large extent with negative physiological effects on the vine [4].…”

Section: Introductionmentioning

confidence: 99%

Bunch protection techniques against thermal increase linked to climate change

Pascual,

Gómez

2023

BIO Web Conf.

View full text Add to dashboard Cite

Increases in temperature and solar radiation, associated with climate change, can cause damage to the berry that causes processes of discoloration, dehydration, cracking or raisining, which can have a negative impact on the oenological potential of the harvest. This damage is called “sunburn” and occurs with some frequency in sensitive varieties such as Graciano. In order to mitigate these impacts, a shading technique has been proposed using protection nets that try to prevent the bunches from receiving excessive sun exposure. The experience shown in this work has been carried out during the years 2021 and 2022, using nets with shading capacity of 50% and 70%. The results have shown that the nets have significantly reduced the temperature of the bunch, also avoiding damage from sunburn. Besides, the organic acid content of the must has reached slightly higher values in the treatments with netting, compared to the control, but not significantly. In wine, the polyphenolic load has shown a variable behavior depending on the year, possibly conditioned by the variations in yield linked to the sunburn. The tasting panel has shown a certain inclination towards the wines from the net treatments in both campaigns.

show abstract

La diversité des vignobles français face au changement climatique : simulations climatiques et prospective participative

Cited by 3 publications

References 36 publications

The Combination of Both Heat and Water Stresses May Worsen Botryosphaeria Dieback Symptoms in Grapevine

The Combination of Both Heat and Water Stresses May Worsen Botryosphaeria Dieback Symptoms in Grapevine

How choices in plant material and plantation practices (variety, rootstock, planting density and vine age) affect grapevine yield for main wine labels. Analysis of a big dataset from surveys to winegrowers in Languedoc-Roussillon.

Bunch protection techniques against thermal increase linked to climate change

Contact Info

Product

Resources

About