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: October 11, 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

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…

Effect of two water deficit regimes on the agronomic response of 12 grapevine varieties cultivated in a semi-arid climate

The Mediterranean basin is one of the most vulnerable regions to Climate Change effects. According to unanimous forecasts, the vineyards of Castilla-La Mancha will be among the most adversely affected by rising temperatures and water scarcity during the vine’s vegetative period. One potential strategy to mitigate the negative impacts of these changes involves the identification of grapevine varieties with superior water use efficiency, while ensuring satisfactory yields and grape quality.

Oenological compatibility of biocontrol yeasts applied to wine grapes 

Antagonistic yeasts applied to wine grapes must be compatible with the thereafter winemaking process, avoiding competition with the fermentative Saccharomyces cerevisiae or affecting wine flavour. Therefore, fifteen epiphytic yeasts (6 Metschnikowia sp., 6 Hanseniaspora uvarum, 3 Starmerella bacillaris) previously selected for its biocontrol ability against Alternaria on wine grapes were evaluate for possible competition with S. cerevisiae by the Niche Overlap Index (NOI) employing YNB agar media with 10 mM of 17 different carbonate sources present in wine grapes (proline, asparagine, alanine, glutamic acid, tirosine, arginine, lisine, methionine, glicine, malic acid, tartaric acid, fructose, melibiose, raffinose, rhamnose, sucrose, glucose).

Qualitative and productive characterization of a minority variety: ‘Branco lexítimo’ in DO Ribeira Sacra (Spain)

The actual climate changes, together with the strong regulation of the European Union and Spanish government, in search of sustainable viticulture, have forced the recovery of minority varieties, expanding the range of grape varieties, as well as the possible development of wines with unique profiles. In the Ribeira Sacra DO (Spain), a comparative study of the agronomic and qualitative behavior of the ‘Branco lexítimo’ variety has been carried out, compared to the majority white variety in the DO: ‘Godello’, located in the same study plot, with identic soil and climatic conditions. The study contemplated the analysis of phenology and leaf water potential, as well as the productive results and the analysis of the must quality, during four seasons: 2018 – 2021.

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

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 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.