GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 GiESCO 2019 9 Impact of tomato black ring virus (TBRV) on quantitative and qualitative feature of Vitis vinifera L. Cv. Merlot and Cabernet franc

Impact of tomato black ring virus (TBRV) on quantitative and qualitative feature of Vitis vinifera L. Cv. Merlot and Cabernet franc

Abstract

Context and purpose of the study – Fifteen nepoviruses are able to induce fanleaf degeneration in grapes which is economically the most imprtant viral disease. Grapevine fanleaf virus (GFLV) is the main causal agent of this disease worldwide and Arabis mosaic virus (ArMV) is the second most important nepovirus involved in this disease in Europe. A third nepovirus has been described in France. Indeed, Tomato Black Ring Virus (TBRV) was detected in vines for the first time in France on a multi‐varietal plot in 2009. The objective of the study was to quantify the impact of TBRV on two varieties of this plot.

Material and methods – Quantitative and qualitative impact of TBRV assessment was carried out in 2010 and 2011. Over 200 vines were analyzed by ELISA tests in order to determine their virus status. Vines were distributed in four groups: 40 vines of Merlot TBRV positive versus 40 merlot vines virus free and 40 vines of Cabernet franc TBRV positive versus 40 free of the virus. For each vine, the presence of eleven other viruses was investigated. In 2010 and 2011 shoot length was measured. In 2010, grape composition was analyzed to determine technological maturity and phenolic maturity of each vine in relation with its virus status.

Results – Shoot length and total pruning weight is reduced in TBRV infected vines, while lateral number is increased. All yield parameters are affected by the presence of the virus. Vines affected by TBRV produce less bunches and berries and smaller berries compared to healthy vines. Yield loss is greater on Merlot compared to Cabernet franc. Grape quality parameters seem to be less affected by the presence of TBRV. These results provide essential elements for the management of the viral disease in the vineyard.

DOI:

Publication date: June 22, 2020

Issue: GiESCO 2019

Type: Article

Authors

Coralie DEWASME LAVEAU (1), Séverine MARY (2), Guillaume DARRIEUTORT (2), Laurent AUDEGUIN (3),Maarten VAN HELDEN (4), Cornelis VAN LEEUWEN (1)

(1) EGFV, Bordeaux Sciences Agro, INRA, Univ. Bordeaux, ISVV, 33882 Villenave d’Ornon, France
(2) Univ. Bordeaux, Vitinnov, ISVV, 1 cours du Général de Gaulle, 33170 Gradignan, France
(3) Institut Français de la Vigne et du Vin, Domaine de l’Espiguette, 30240 Le Grau du Roi, France
(4) SARDI Entomology, Urrbrae SA 5064, University of Adelaide, Australia

Contact the author

Keywords

Grapevine, virus, grape quality, yield

Tags

GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Physiological and growth reaction of Shiraz/101-14 Mgt to row orientation and soil water status

Advanced knowledge on grapevine row orientation is required to improve establishment, management and outcomes of vineyards on terroirs with different environmental conditions (climate, soil, topography) and in view of a future change to more extreme climatic conditions. The purpose of this study was to determine the combined effect of row orientation, plant water status and ripeness level on the physiological and viticultural reaction of Shiraz/101-14 Mgt.

Effects of mechanical leafing and deficit irrigation on Cabernet Sauvignon grown in warm climate of California

San Joaquin Valley accounts for 40% of wine grape acreage and produces 70% of wine grape in California. Fruit quality is one of most important factors which impact the economical sustainability of farming wine grapes in this region. Due to the recent drought and expected labor cost increase, the wine industry is thrilled to understand how to improve fruit quality while maintaining the yield with less water and labor input. The present study aims to study the interactive effects of mechanical leafing and deficit irrigation on yield and berry compositions of Cabernet Sauvignon grown in warm climate of California.

The effects of cane girdling on berry texture properties and the concentration of some aroma compounds in three table grape cultivars

The marketability of the table grapes is highly influenced by the consumer demand; therefore the market value of the table grapes is mainly characterized by its berry size, colour, taste and texture. Girdling could cause accumulation of several components in plants above the ringing of the phloem including clusters and resulting improved maturity. The aim of the experiments was to examine the effect of girdling on berry texture characteristics and aroma concentration.

Application of a fluorescence-based method to evaluate the ripening process and quality of Pinot Blanc grape

The chemical composition of grape berries at harvest is one of the most important factors that should be considered to produce high quality wines. Among the different chemical classes which characterize the grape juice, the polyphenolic compound, such as flavonoids, contribute to the final taste and color of wines. Recently, an innovative non-destructive method, based on chlorophyll fluorescence, was developed to estimate the phenolic maturity of red grape varieties through the evaluation of anthocyanins accumulated in the berry skin. To date, only few data are available about the application of this method on white grape varieties.

Different yield regulation strategies in semi-minimal-pruned hedge (SMPH) and impact on bunch architecture

Yields in the novel viticulture training system Semi-Minimal-Pruned Hedge (SMPH) are generally higher compared to the traditional Vertical Shoot Positioning (VSP). Excessive yields have a negative impact on the vine and wine quality, which can result in substantial losses in yield in subsequent vintages (alternate bearing) or penalties in fruit quality. Therefore yield regulation is essential. The bunch architecture in SMPH differs from VSP. Generally there is a higher amount but smaller bunches with lower single berry weights in SMPH compared to VSP.