terclim by ICS banner
IVES 9 IVES Conference Series 9 Biotic interactions: case of grapevine cultivars – the fungal pathogen Neofusicoccum parvum – biocontrol agents 

Biotic interactions: case of grapevine cultivars – the fungal pathogen Neofusicoccum parvum – biocontrol agents 

Abstract

Grapevine is subject to multiple stresses, either biotic or abiotic, frequently in combination. These stresses may negatively impact the health status of plants and reduce yields. For biotic stress, grapevine is affected by numerous pest and diseases such as downy and powdery mildews, grey mold, black rot, grapevine fanleaf virus and trunk diseases (namely GTDs). The interaction between grapevine and pathogens is relatively complex and linked to various pathogenicity factors including cell-wall-degrading enzymes (especially CAZymes) and phytotoxic secondary metabolites, growth regulators, effectors proteins, and fungal viruses. In response to pathogen attacks, the grapevine is capable of inducing or inhibiting various pathways related to its traits of tolerance or susceptibility. These responses depend on both the pathogen genotype and the plant genotype. Similar behaviors have been described for the relationship between the plant and beneficial microorganisms. To illustrate these biotic interactions, the relationship between grapevine cultivars and a fungal pathogen associated to the Botryosphaeriaceae dieback, Neofusicoccum parvum, will first be described. Secondly, this interaction could itself be changed by the addition of biocontrol agents (bacteria, or fungi, or oomycetes), sole or in combination. Finally, this is a major challenge to determine the best balance between the vigor and health of the grapevine, the control of the pathogen attack and the damage caused, and the use of biocontrol agents.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Florence Fontaine1*

1 Université de Reims Champagne-Ardenne, Unité de recherche Résistance Induite et Bioprotection des Plantes USC INRAE 1488, Chaire Maldive, 51100 Reims, France

Contact the author*

Keywords

biological control aspect, Botryosphaeriaceae species, fungal pathogen, plant tolerance, pathogenicity factors

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Development of novel drought-tolerant grape cultivars from Monastrell: enhancing anthocyanin and flavonol content under elevated temperatures

The ongoing challenge of climate change is driving the need for novel oenological approaches aimed at finding effective environmental solutions.

Molecular binding mechanisms between grape seed polypeptides and wine anthocyanins by fluorescence spectroscopy and computational techniques

In recent years, proteins endogenous to grape have become of great interest to the wine industry because they represent a new alternative to other biopolymers subjected to more legal restrictions (i.e. animal origin and synthetics) that can be used in technological applications to modulate sensory attributes such as wine color and have a positive impact on wine quality.

High-resolution aerial thermography for water stress estimation in grapevines

Aerial thermography has emerged as a promising tool for water stress detection in grapevines, but there are still challenges associated with this technology, particularly concerning the methodology employed to extract reliable canopy temperature values. This consideration is relevant especially in vertically trained vineyards, due to the presence of multiple surfaces which are captured by drone thermal cameras with high-resolution. To test the technology and the data analysis required, a field study was conducted during the 2022-2023 season in a model vineyard with multiple scions-rootstock combinations trained on a vertical shoot-positioning (VSP) system. Additionally, three irrigation regimes were implemented to introduce variability in water stress levels.

The wine microbial consortium: a real terroir characteristic

Yeast, bacteria, species and strains play a key role in the winemaking process by producing metabolites which determine the sensorial qualities of wine. Therefore microbial population numeration, species identification and strains discrimination from berry surface at harvest to storage in bottle are fundamental.

Unleashing the power of artificial intelligence for viticulture and oenology on earth and space

Implementing artificial intelligence (AI) in viticulture and enology is a rapidly growing field of research with an essential number of potential practical applications.