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.

Download the abstract

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…

Comparison of integrated, organic and biodynamic viticultural practices

In this video recording of the IVES science meeting 2021, Johanna Döring (Hochschule Geisenheim University Department of General and Organic Viticulture, Geisenheim, Germany) speaks about the comparison of integrated, organic and biodynamic viticultural practices. This presentation is based on an original article accessible for free on OENO One.

Read More

Wood from barrique: release of phenolic compounds and permeability to oxygen

Chemical and sensory changes occurring in red wine during ageing in oak barrique are due to the slow and gradual entrance of oxygen along with a release of ellagic tannin from the wood. Though oxygen can enter the cask through the bunghole, it is not clear the role of permeation through the wood staves as well as the amount of oxygen entering by permeation. The distribution of the released ellagic tannins in the wine ageing is also unknown. The oxygen passing through the bunghole may have a different wine ageing effect compared to the oxygen permeating through the wooden staves owing to the uneven ellagic tannin concentration throughout the wine.

Read More

Anthropogenic intervention in shaping Terroir in a California Pinot noir vineyard

In many vineyards optimal parcel size exceeds the geospatial complexity that exists in soils and topographic features that influence hydrological properties, sunlight interception and soil depth and texture (available water capacity).

Read More

Effect of mannoproteins extracted from Torulaspora delbrueckii on wine flavanol composition and on flavanol-salivary protein interactions

Global climate change is exerting an influence on vine phenology, leading to a decoupling of technological and phenolic maturity of grapes. This results in the modification of berry chemical composition, which can translate into wines with excessive astringency. The addition of mannoproteins (MP) to wine has been proposed as a way of mitigating this problem, since some studies have shown that MPs can modulate wine astringency. However, the mechanism underlying the astringency modulation effect of MPs is not well known and it seems to be dependent on the compositional and structural characteristics of the MP.

Read More

Visualization of wine origin, quality level and terroir by the landscape

The communication of the aims of a viticulture under the premise of terroir is presently discussed in a lot of wine-growing regions around the world. To encourage this discussion the differences in knowledge, understanding, and preference concerning wine and landscape should be regarded more closely: the wine should be perceived as a representative of its region and one of the most characteristic features of a region is the landscape.

Read More