terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Metabolomic profiling of heat-stressed grape berries 

Metabolomic profiling of heat-stressed grape berries 

Abstract

The projected rise in mean air temperatures together with the frequency, intensity, and length of heat waves in many wine-growing regions worldwide will deeply impact grape berry development and quality. Several studies have been conducted and a large set of molecular data was produced to better understand the impact of high temperatures on grape berry development and metabolism[1]. According to these data, it is highly likely that the metabolomic dynamics could be strongly modulated by heat stress (HS). Hence, the objective of the present study is to investigate the metabolome profiling on grape berries, exposed or not, to high temperature. We applied HS directly on clusters from V. vinifera L. Cabernet Sauvignon (heat sensitive genotype) and V. vinifera L.  Merlot (heat tolerant genotype) at different developmental stages. HS was applied continuously from 8:00 am to 16:00 pm for up to 10 days in greenhouse. The temperature difference between the HS-treated and control bunches was 9 °C. Berry samples were collected after both short-term and long-term HS treatment and metabolomic analyses were conducted using the untargeted LC-MS approach. Data processing was performed by MS-DIAL 4.94 and MetaboAnalyst 5.0.

Our first set of results highlights metabolites and distinct biochemical pathways impacted by HS, according to the thermotolerance ability of the evaluated cultivars. Our data also underline the temporal dynamics of metabolic responses triggered by HS, highlighting the importance of characterizing these metabolic changes at different time scales.

Acknowledgements: This work is supported by the ANR (PARASOL Project, ANR-20-CE21-0003) and X. Z. PhD thesis is founded by China Scholarship Council. The authors would like to EGFV Materiel-Vegetal team and Dr. Erwan Chavonet for the fruit cutting production.

References:

  1. Lecourieux F. et al. (2017) Dissecting the biochemical and transcriptomic effects of a locally applied heat treatment on developing cabernet sauvignon grape berries. Front Plant Sci 8: 53

DOI:

Publication date: October 5, 2023

Issue: ICGWS 2023

Type: Article

Authors

Xi ZHAN1*, Adam ROCHEPEAU2, Cédric CASSAN2, Fatma OUAKED-LECOURIEUX1, Pierre PETRIACQ2, David LECOURIEUX1

1EGFV, University of Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, Villenave d’Ornon, France 
2Bordeaux Metabolome, INRAE Bordeaux Nouvelle Aquitaine, INRAE, Villenave d’Ornon, France

Contact the author*

Keywords

grapevine, berry quality, metabolomics, high temperature, climate change

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Assessment of plant water consumption rates under climate change conditions through an automated modular platform

The impact of climate change is noticeable in the present weather, making water scarcity the most immediate mediator reducing the performance and viability of crops, including grapevine (Vitis vinifera L.). The present study developed a system (hardware, firmware, and software) for the determination of plant water use through changes in weight through a period. The aim is to measure the differences in grapevine water consumption in response to climate change (+4oC and 700 ppm) under controlled conditions. The results reveal a correlation between daily plant consumption rates and reference evapotranspiration (ETo).

Read More

Identification of loci associated with specialised metabolites in Vitis vinifera

Secondary (or specialised) metabolites such as terpenes and phenolic compounds are produced by plants for various roles which include defence against pathogens and herbivores, protection against abiotic stress, and plant signalling. Additionally, these metabolites influence grapevine quality traits such as colour, aroma, taste, and nutritional value. However, the biosynthesis of these metabolites is often complex and controlled by multiple genes which in grapevine are predominantly uncharacterised.

Read More

Effect of foliar application of urea and nano-urea on the cell wall of Monastrell grape skins

The foliar application of urea has been shown to be able to satisfy the specific nutritional needs of the vine as well as to increase the nitrogen composition of the must. On the other hand, the use of nanotechnology could be of great interest in viticulture as it would help to slow down the release of urea and protect it against possible degradation. Several studies indicate that cell wall synthesis and remodeling are affected by nitrogen availability.

Read More

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison.

Read More

Wine racking in the winery and the use of inerting gases

The O2 uptake in the different winemaking processes is generally considered to be negative for the sensory characteristics of white and rosé wines. Wine racking is a critical point of O2 uptake, as the large surface area of the wine exposed during this operation and the inability to maintain an effective inert gas blanket over it.
The objective was to study O2 uptake during the racking of a model wine without using inert gases and to compare it with the purging of the destination tank with different inert gases.

Read More