terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Phenotyping bud break and trafficking of dormant buds from grafted vine

Phenotyping bud break and trafficking of dormant buds from grafted vine

Abstract

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]. It is the main objective of this project to identify rootstock genotypes that could contribute in delaying bud burst in order to adapt to extreme climate events. For this, first we investigated the cold requirements to achieve a homogenous bud break pattern from cuttings of Merlot, Cabernet Sauvignon and Chasselas[2]. Interestingly, Merlot needs longer cold exposure times to achieve 100% bud break. Moreover, bud break of different Vitis species was assessed in the field. Two late and one early Vitis were identified which will be used as rootstock in grafts with Cabernet Sauvignon. Bud break times of these combinations will be assessed to identify changes in bud dormancy in the scion. Furthermore, buds from Cabernet Sauvignon, Merlot and RGM are being sampled for a year-cycle to follow bud development, dormancy and bud break by RNAseq and metabolomics. This, coupled with QTLs identified from bud break of a population of Cabernet Sauvignon x Vitis riparia, will allow the identification of genes involved in dormancy and bud break. Lastly, to understand the rootstock/scion/bud communication, traficking of calceine in cuttings containing dormant and non-dormant buds was studied to indicate the moment in which this molecule is able to enter the bud. Results show that calceine is not able to enter the bud in either condition therefore, 32P is being used to rule out a possible molecular size effect.

Acknowledgements: We thank Lysiane Brocard from the Bordeaux Imaging Center for the advice on microscopy and Bordeaux Plant Sciences from the Université de Bordeaux for funding this research through the Grand Programme de Recherche (GPR).

1)  Miele A. (2019). Rootstock-scion interaction:6. Phenology, chilling and heat requirements of Cabernet Sauvignon grapevine. Revista Brasileira de Fruticultura 41.

2)  Dokoozlian, N.K. 1999. Chilling Temperature and Duration Interact on the Budbreak of ‘Perlette’ Grapevine Cuttings. HORTSCIENCE, VOL. 34(6), OCTOBER 1999.

DOI:

Publication date: 11/10/2023

Issue: ICGWS 2023

Type: Poster

Authors

Anne Marie Labandera Nadeau1*, Elisa Marguerit1, Jean-Pascal Tandonnet1, Coralie Chesseron2, Alain Mollier2, Pierre Gastou1, Marina de Miguel Vega1, Bénédicte Wenden3, Sarah Cookson1

1 Ecophysiology and Functional Genomics of the Grapevine – INRAE Bordeaux Aquitaine
2 Interaction Sol Plante Atmosphére (ISPA) – INRAE Bordeaux Aquitaine
3 Biologie du Fruit et Pathologie – INRAE Bordeaux Aquitaine

Contact the author*

Keywords

bud break, dormancy, communication, grafting

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Sensory profile of wines obtained from disease-resistant varieties in La Rioja

The European wine industry is facing multiple challenges derived from climate change and the pressure of different fungal diseases that are compromising the production of traditional varieties. A sustainable alternative maybe the adoption of resistant varieties.
In this study, we have evaluated the enological potential of 9 resistant varieties (5 white and 4 red varieties) in La Rioja. Microvinifications were carried out with three biological replications. Oenological parameters were very diverse with acid content varying from 2.6 g/L to 6.6 g/L.

Read More

Assessing the Effectiveness of Electrodialysis in Controlling Brettanomyces Growth in Wine

Brettanomyces yeast can negatively impact the quality and stability of wines, posing a significant challenge to winemakers. [1] This study aims to develop novel management practices to limit Brettanomyces impact on wines by evaluating the effectiveness of electrodialysis (ED) technology in removing magnesium (Mg2+) from wine to prevent the development of Brettanomyces yeast. The ED technique utilizes charged membranes to extract ions from the wine, and it is considered an alternative to cold stabilization that requires less energy. [2]

Read More

Do wine sulphites affect gut microbiota? An in vitro study of their digestion in the gastrointestinal tract

“Sulphites” and mainly sulphur dioxide (SO2) is by far the most widely used additive (E-220/INS 220) in winemaking and likely the most difficult to replace. The well-known antioxidant, antioxidasic and antimicrobial properties of SO2 make this molecule a practically essential tool, not only in winemaking, but also in the production of other food products. The current trend in winemaking is the reduction of this unfriendly additive due to its negative effects on health and environmental. In particular, it could cause headaches and intolerance/allergic reactions in sensitive individuals. Wine is considered one of the major contributors of exposure of SO2 in the adult population, when this beverage is included in the diet.

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

Metabolomic insights into wine’s sensory identity: unveiling climate-driven changes in aroma composition

Wine, a sensitive and intricate agricultural product, is being affected by climate change, which accelerates grapevine phenological stages and alters grape composition and ripening. This influences the synthesis of key aroma compounds, shaping wine’s sensory attributes [1]. The complex aroma profile, resulting from compound interactions, presents a metabolomics challenge to identify these indicators and their environmental change responses, which is being addressed using diverse analytical techniques.

Read More