terclim by ICS banner
IVES 9 IVES Conference Series 9 Exploring diversity of grapevine responses to Flavescence dorée infection

Exploring diversity of grapevine responses to Flavescence dorée infection

Abstract

Flavescence dorée, a serious threat to grapevine cultivation in several European Countries, is caused by phytoplasmas in the 16Sr-V ribosomal group, classified as quarantine organisms in the EU and transmitted mainly by the insect vector Scaphoideus titanus. The disease is controlled only by indirect and preventive measures, with important economic and environmental concerns. Genetic resources from the great variety of Vitis vinifera germplasm together with application of new genomic techniques could be applied to produce resistant/tolerant plants, once the genetic bases of susceptibility are elucidated. In a current Italian project (BIORES*) we are evaluating different international and local grapevine cvs. as well as microvine plants for their response to FD transmission and multiplication in controlled conditions. Infective vectors were caged onto potted plants of 8 varieties for 5 weeks. Insect survival and infectivity were monitored and plant infections were quantitatively tested 11 weeks post inoculation.
In parallel, previous data and materials generated by the Project Consortium are being mined to select putative resistance- or susceptibility-related genes, to be further validated in functional analyses, either on already produced transgenic plants or in future genome editing experiments to introduce precise targeted mutations in candidate genes of the highly susceptible cv. Chardonnay, with the final goal of reducing FD susceptibility without compromising other productive traits.

*Funded by the European Union – NextGenerationEU.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Francesca Cavagna1, Enea Guerrieri1, Davide Danzi1, Sabrina Palmano2, Cristina Marzachì2, Nicola Mori1, Annalisa Polverari1*

1 Department of Biotechnology, University of Verona, via della Pieve 70, San Pietro in Cariano, Verona, Italy
2 Institute for Sustainable Plant Protection, CNR, Strada delle Cacce 73, 10135 Torino, Italy

Contact the author*

Keywords

Phytoplasma, Germplasm, Breeding, Genome editing, Sustainable viticulture

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Evaluation of intravarietal variability and selection for tolerance to downy mildew: The case of Antão Vaz variety in Portugal 

Antão Vaz is a Portuguese white grapevine variety grown mainly in the wine-growing regions of Southern Portugal, particularly in the Alentejo, Lisbon and Setúbal peninsula regions. It is a very vigorous and productive variety, giving the wines a strong identity. It needs heat and sunlight and prefers deep and dry soils, which makes it tolerant to scald caused by the high summer temperatures of Southern Portugal. However, this variety is very susceptible to downy mildew, caused by plasmopara viticola, a very destructive disease in years with rainy springs.

Biovi: a research program for reducing chemical input in vine and wine

Decrease of chemical inputs during vine management and winemaking is of great importance from a political and societal point of view. In our ongoing project we propose alternative tools to chemicals in the vineyard and the cellar. We have compared a conventional vineyard protection strategy to an alternative strategy using copper and biocontrol products (Biocontrol) against downy

Lean management to improve sustainability in wine sector: an exploratory study in the Prosecco DOC appellation

The contemporary wine sector confronts a formidable array of challenges, including burgeoning production costs and the constricted availability of natural resources. Heightened consumer awareness regarding sustainability issues further compounds these pressures, compelling companies to adopt more judicious resource utilization strategies. In response to these imperatives, there is a growing recognition of the need to overhaul production methodologies within the wine industry with a view to minimizing inputs and eliminating waste.

Revisión de estudios sobre suelos vitícolas de las tierras del Jerez

Dada la importancia de los suelos y de los substratos geológicos en la zonificación vitivinícola, los autores realizan una revisión de estudios sobre las formaciones más importantes en la D.O. Jerez-Xérès-Sherry y Manzanilla-Sanlúcar de Barrameda.

A microwave digestion ICP-MS method for grapevine bark elemental profiling

A rapid and reproducible microwave (MW)-assisted acid digestion protocol was developed to determine the elemental composition of grapevine bark samples using ICP-MS.