GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 GiESCO 2019 9 Soil and topography effects on water status and must composition of chardonnay in burgundy & a mini meta‐analysis of the δ 13C/water potentials correlation

Soil and topography effects on water status and must composition of chardonnay in burgundy & a mini meta‐analysis of the δ 13C/water potentials correlation

Abstract

Context and purpose of the study: The measurement of carbon isotopic discrimination in grape sugars 13 at harvest (δ C) is an integrated assessment of water status during ripening. It is an efficient alternative to assess variability in the field and discriminate between management zones in precision viticulture, but further work is needed to completely understand the signal.

Material and methods: This work, spanning over 3 years, performed in in 8 different plots in a hillslope toposequence in Burgundy, delineates the relationships between main soil properties (gravel amount, slope, texture) and the grapevine water status assessed by δ13C and predawn leaf water potentials (Ψpd). Brix, tartaric and malic acids were also measured.

Results: The highest δ13C, indicating most severe water deficit, was recorded in gravelly soils on steep 13 slopes. The amount of sugars and malic and tartaric acids was also related to δ C. The relationship between δ 13C and Ψpd was also investigated, because the absolute values of measured δ 13C were lower than the values currently found in the literature. A mini‐meta‐analysis was performed, which 13 showed that the slope of the relationships between minimum Ψpd and δ C was stable across studies (a 13 change of 1‰ in δ C corresponded to a change of −0.2 MPa in the minimum Ψpd), while the intercept of the comparison δ 13C/Ψpd changed, probably because of genetic variations between varieties, or environmental differences. 

DOI:

Publication date: June 19, 2020

Issue: GiESCO 2019

Type: Article

Authors

Luca BRILLANTE (1), Olivier MATHIEU (2), Jean LEVEQUE (2), Cornelis van LEEUWEN (3), Benjamin BOIS (2,4)

(1) Dep. of Viticulture and Enology, California State University, Fresno, CA 93740 USA
(2) UMR CNRS/uB 6282 Biogéosciences, Université de Bourgogne-Franche-Comté, Dijon, FR
(3) EGFV, Bordeaux Sciences Agro, INRA, Univ. Bordeaux, ISVV, 33882, Villenaved’Ornon, FR
(4) Institut Universitaire de la Vigne et du Vin ‘Jules Guyot’, Université de Bourgogne-Franche-Comté, Dijon, FR

Contact the author

Keywords

carbon isotopic discrimination; water stress; terroir; slope; organic acids

Tags

GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Study and valorization of vineyards “terroirs” of A.O.C. Cahors (Lot, France)

In the current context of market competition and consumption evolution, it is necessary to produce wines of a genuine typicity. The Terroir represents an unique and irreproducible inheritance that can be valorized through the origin and the sensory characteristics of the wines.

MAPPING THE CONCENTRATIONS OF GASEOUS ETHANOL IN THE HEADSPACE OF CHAMPAGNE GLASSES THROUGH INFRARED LASER ABSORPTION SPECTROSCOPY

Under standard wine tasting conditions, volatile organic compounds (VOCs) responsible for the wine’s bouquet progressively invade the glass headspace above the wine surface. Most of wines being complex water/ethanol mixtures (with typically 10-15 % ethanol by volume), gaseous ethanol is therefore undoubtedly the most abundant VOC in the glass headspace [1]. Yet, gaseous ethanol is known to have a multimodal influence on wine’s perception [2]. Of particular importance to flavor perception is the effect of ethanol on the release of aroma compounds into the headspace of the beverage [1].

Chitosan elicits mono-glucosylated stilbene production and release in fed-batch fermentation of grape cells 

In the present study, the optimal conditions of grape (Vitis vinifera cv ‘Barbera’) cell cultures in batch and fed-batch bioreactor processes were studied to specifically improve the production of mono-glucosylated stilbenes.

Wine consumption in Ukraine: trends, socio-economic aspects, and public perception

This article explores the contemporary culture of wine consumption in Ukraine through the lens of social, economic, and cultural transformations triggered by European integration, the COVID-19 pandemic, and the full-scale war since 2022.

Méthode et outils de valorisation des terroirs en cave coopérative

Depuis le début des années 90, les vignerons des Caves Coopératives de l’Appellation “Côtes du Rhône” se sont penchés, au sein des structures de réflexion du Syndicat Général, sur deux axes de réflexion:
– Détermination des critères de sélection et de rémunération différenciée des apports de vendange;
– Organisation des sélections de vendanges sur la base des terroirs afin d’augmenter quantitativement le potentiel de sélection au sein de l’unité de production.