WAC 2022 banner
IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 1 - WAC - Posters 9 Mining terroir influence on bioactive polyphenols from grape stems: A correlation-network-driven approach to spatialize metabolomics data

Mining terroir influence on bioactive polyphenols from grape stems: A correlation-network-driven approach to spatialize metabolomics data

Abstract

In viticulture, the concept of terroir is often used to enlighten the environmental-based typicity of grapevines grown in a local area however its scientific basis remains under debate. Grape polyphenols as key player of the plant defense system enables adaptation to environmental changes and so far, form a unique metabolic component to investigate the terroir influence. Using correlation-based networks and spatial metabolomics we investigated how continuous changes of soil properties may impact the polyphenol composition within a single grape clone. In a vineyard parcel covering four different geological layers and planted with a unique clone of Cabernet Franc, the soil texture was analyzed at 30 georeferenced points with a spatial coverage sampling strategy. Grape stems were harvested at corresponding positions over 3 consecutive years followed by UPLC-DAD-MS-based metabolomic analysis targeted on 43 metabolites including flavonoids, phenolic acids, procyanidins and stilbenoids. Principal component analyses on intra-vintage data presented good reproducibility. A correlation-driven approach was used to select co-varying metabolites before using Geographic Information System (GIS). As results, flavonoids and stilbenoid DP4 were spatialized according to soil granulometry, with stilbenoid DP4 over-accumulating in loamy-silty soils and flavonoids in sandy soils. The present study highlights soil-based terroir influence on polyphenols in a continuous space. Spatial metabolomics driven by correlation-based networks represents a powerful approach to spatialize field-omics data and may serve as new field-phenotyping tool in precision agriculture.

DOI:

Publication date: June 9, 2022

Issue: WAC 2022

Type: Article

Authors

Arnaud Lanoue, Kévin Billet, , Sébastien Salvador-Blanes, Thomas Dugé de Bernonville, Guillaume Delanoue, Florent Hinschberger, Audrey Oudin, Vincent Courdavault, Olivier Pichon, Sébastien Besseau, Samuel Leturcq, Nathalie Giglioli-Guivarc’h, Arnaud Lanoue

Presenting author

Arnaud Lanoue – EA 2106 Biomolécules et Biotechnologies Végétales, UFR des Sciences Pharmaceutiques, Université de Tours

Institut Français de la Vigne et du Vin, Tours | GéoHydrosystèmes Continentaux (GéHCO), EA 6293, Université de Tours | Laboratoire CITERES, Equipe Laboratoire Archéologie et Territoires (LAT), UMR 7324 CNRS, Université de Tours| EA 2106 Biomolécules et Biotechnologies Végétales, UFR des Sciences Pharmaceutiques, Université de Tours

Contact the author

Keywords

Terroir – metabolomics – grape polyphenols – Geographic Information System – correlation network

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

Chemical boundaries of wine identity: rationalizing grape and wine aroma diversity for improved terroir management

Aims: Wine perceived quality lies on a number of different factors. Among these, sensory features, which are in turn dependent on chemical composition, play a primary role. There is traditionally a great emphasis on producing wines that have specific sensory profiles, particularly aroma, that reflect identity features connected to the place and the variety of origin. In the case of high quality

Read More

Arbuscular mycorrhizal fungi as biomarkers of vineyard yield in Champagne

The vine is colonized by a multitude of micro-organisms (fungi, bacteria, oomycetes) mainly coming from the microbial reservoir constituted by the soil. These microorganisms have positive or negative effects on the vine (protection against pathogens, resistance to abiotic stress, nutrition, but also triggering of diseases) (Fournier, Pellan et al. 2022). In addition to these functional roles, they respond quickly to environmental changes (climate, cultural practices) which could make them good bioindicators of the functioning of the wine ecosystem.

Read More

CHANGES IN METABOLIC FLUXES UNDER LOW PH GROWTH CONDITIONS: CAN THE SLOWDOWN OF CITRATE CONSUMPTION IMPROVE OENOCOCCUS OENI ACID-TOLERANCE?

Oenococcus oeni is the main Lactic Acid Bacteria responsible for malolactic fermentation, converting malic acid into lactic acid and carbon dioxide in wines. Following the alcoholic fermentation, this second fermentation ensures a deacidification and remains essential for the release of aromatic notes and the improvement of microbial stability in many wines. Nevertheless, wine is a harsh environment for microbial growth, especially because of its low pH (between 2.9 and 3.6 depending on the type of wine) and nutrient deficiency. In order to maintain homeostasis and ensure viability, O. oeni possesses different cellular mechanisms including organic acid metabolisms which represent also the major pathway to synthetize energy in wine.

Read More

Delineation significance in viticultural zoning: examples in the Southern Côtes-du-Rhône

In order for a spatialized gestion of wine-producing areas, delineation of viticultural zones is needed. Viticultural zoning according to qualitative expression of varieties is a great concern

Read More

The soil biodiversity as a support to environmental sustainability in vineyard

The environmental biodiversity is important to guarantee essential services to the living communities, its richness is a symptom of a minor disturbance and improves he environment biological quality.

Read More