Terroir 2014 banner
IVES 9 IVES Conference Series 9 The impact of vine nitrogen status on aroma potential expression in Vitis vinifera L. cv. Sauvignon blanc

The impact of vine nitrogen status on aroma potential expression in Vitis vinifera L. cv. Sauvignon blanc

Abstract

In interaction with climate and genetic or human factors, the soil is a major component of the viticulture terroir. The mineral composition of the soil influences vine performance and wine sensory attributes. Among the elements that vines take from the soil, nitrogen is the one that has the strongest impact on vine physiology, vigor and grape composition. In addition to its major effect on primary metabolites in berries, nitrogen plays also a decisive role in the secondary metabolism, especially in the production of key compounds for berries quality, like volatile thiols, methoxypyrazines and glutathione (GSH). 

To study the effect of nitrogen on these target metabolites, an experiment on Sauvignon blanc vines was performed in Bordeaux and Sancerre areas (France). Four nitrogen treatments were applied: control, soil application of 50kg N/ha, soil application of 100kg N/ha and foliar application of 15kg N/ha. Secondary metabolites were measured in grape berries and in wines produced through small scale vinifications. 

Yeast Assimilable Nitrogen and N-tester measurements showed a significant difference in vine nitrogen status among the four treatments. The analysis of volatile compounds showed an increase in the content of 3-sulfanylhexan-1-ol precursors (P-3SH) and GSH in berries from vines with high N status. Similar effect of nitrogen was observed on the concentration of 3SH and GSH in wine. 

This study will allow better management of vine nitrogen status in vineyards allowing a quantitative and qualitative control of grape berries.

DOI:

Publication date: August 18, 2020

Issue: Terroir 2014

Type: Article

Authors

Pierre Helwi (1), (3), Sabine Guillaumie (1), Cécile Thibon (2), Philippe Darriet (2), Cornelis van Leeuwen (1), (3) 

(1) Univ. Bordeaux, ISVV, UMR 1287 EGFV, INRA, 33882 Villenave d’Ornon France 
(2) Univ. Bordeaux, ISVV, Unité de recherche OEnologie EA4577, USC1366, INRA, 33882 Villenave d’Ornon France 
(3) Bordeaux Sciences Agro, ISVV, UMR 1287 EGFV, INRA, 33882 Villenave d’Ornon France 

Contact the author

Keywords

terroir, nitrogen, Sauvignon blanc, berry, wine, volatile thiols, methoxypyrazines, glutathione

Tags

IVES Conference Series | Terroir 2014

Citation

Related articles…

A sensometabolomic approach to understand wine mouthfeel percepts

Targeted analytical methods can overlook compounds that are a priori unknown to play a role in the mouthfeel sensations. This limitation can be overcome with the information provided by untargeted metabolomic analysis using UPLC‐QTOF-MS. To this end, an untargeted metabolomic approach applied to 42 red wines has allowed development of a model with predictive capacity by cross-validation for the “dry”, “oily” and “unctuous” sensations perceived by a sensory panel. The optimal PLS model for “dry” retained compounds with positive regression coefficients (≥ 0.17) including a trimer procyanidin, a peptide, and four anthocyanins.

CHARACTERIZATION OF THE AROMA PROFILE OF COMMERCIAL PROSECCO SPARKLING WINES

The typicality of a wine, as well as its aromatic identity, are attributes that are highly sought after and requested by the current market. It is therefore of considerable technological interest to investigate the aromatic aspects of specific wines and to identify the odorous substances involved.In this thesis work, the characterization of the aromatic composition of Prosecco wines available on the market with a price range between 7 and 13 euros was carried out. These wines came from three different areas of origin such as Valdobbiadene, Asolo and Treviso.

Application of GiESCO “bio-metaethics” charter in practice: the “direct” involvement of vine grower, winemaker, society

On the basis of a direct agreement between the GiESCO and the vine grower, the winemaker and the consumers (individual; company; public or private organizations), the communication on the content of the charter can be done as follows:
• Commitment to respect the basic rules of the GiESCO “BIO – MetaEthics” charter.
1/ Put Mankind in the depth of all concerns in a universal context: (grower, consumer, citizen, work valuing, education, security)
2/ Insure minimum impact on environment by optimizing cultivation technics: (maximum of natural biodegradable products, friendly practices, short channels, renewable energies, terroir sustainability)

“Compost Application in the Vineyard: Effects on Soil Nutrition and Compaction”

The mechanization of pruning and harvesting in vineyards has increased the risk of soil compaction. To reclaim soil properties or avoid this degradation process, it is crucial to properly manage the soil organic matter, and the application of compost derived from the vines themselves is a strategy to achieve this. The objective of this study was to evaluate the properties of soil treated with different doses of compost applied both on the vine row and the inter rows of a Vitis vinifera crop.

Release and perception of γ-nonalactone and massoia lactone in the red wine matrix: impact of ethanol and acidity

Climate change (CC) is altering grape/wine composition, challenging wine sensory quality. Rising temperatures increase grape sugar levels, with higher wine ethanol (EtOH) contents, reduce total acidity (TA) converging with increased pH and lead to the accumulation of CC odorous markers such as γ-nonalactone (γ-C9) and massoia lactone (ML).