terclim by ICS banner
IVES 9 IVES Conference Series 9 Hormonal and associated metabolic changes in susceptible harvest-ripe grapes under asymptomatic and symptomatic Esca disease

Hormonal and associated metabolic changes in susceptible harvest-ripe grapes under asymptomatic and symptomatic Esca disease

Abstract

Esca complex is a disease affecting grapevine trunks, characterized by the colonization of the wood by xylem-residing fungi (Phaeomoniella chlamydospora, Phaeoacremonium minimum and Fomitiporia mediterranea), and posing significant risks to vineyard longevity since no efficient treatment is available. Despite its prevalence, the mechanisms beyond symptomatic manifestations like interveinal chlorosis and leaf necrosis remain unclear. Preliminary findings indicated a more pronounced metabolic reprogramming in fruits compared to vegetative organs and a putative impact on wine quality by using fruits from symptomatic grapevines. Here, we conducted metabolic profiling and untargeted/ targeted metabolomics to gather more insights into the molecular and biochemical mechanisms responsible for the onset of symptoms. Ultra-High Performance Liquid Chromatography (UHPLC-qTOF-MS/MS), Gas Chromatograph-Quadrupole Time of Flight Mass Spectrometry (GC-qTOF-MS/MS), and Liquid Cromatography (LC-MS/MS) enabled the identification of putative markers of symptomatology regarding hormonal regulation, primary and secondary metabolisms. Abscisic acid, jasmonates, and specific amino acids and sugars decrease in harvest-stage fruits from symptomatic grapevines, in contrast with the accumulation of a wide variety of phenylpropanoids (e.g., procyanidin B1, caftaric acid, resveratrol) among others. Secondary metabolism was more strongly remodelled indicating a partitioning of carbon allocated to defence-related metabolism. RNA extraction and sequencing are being conducted to integrate these metabolic results with molecular data. This study may contribute to developing a model regarding the development of Esca symptoms in an attempt to mitigate the worldwide impact of this complex disease.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Rute Amaro1*, Rita Pacheco2,3, Carla António4, Cecília Rego5, Lisete Sousa6, Paula Lopes1,7, Axel Mithöfer8, Ana Margarida Fortes1

1 BioISI – Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal
2 Department of Chemical Engineering, ISEL—Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal
3 Centro de Química Estrutural, Institute of Molecular Sciences, Universidade de Lisboa, 1749-016 Lisboa, Portugal
4 Forest Research Centre (CEF), School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal
5 LEAF – Linking Landscape, Environment, Agriculture and Food (LEAF), School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal
6 Departamento de Estatística e Investigação Operacional e Centro de Estatística e Aplicações, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
7 DNA & RNA Sensing Lab, University of Trás-os-Montes e Alto Douro, Department of Genetics and Biotechnology, School of Life Science and Environment, Vila Real, Portugal
8 Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany

Contact the author*

Keywords

Esca disease, Hormonal profiling, Primary metabolism, Phenylpropanoid pathways, RNA sequencing

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Water status response of Vitis vinifera L. cv Cabernet Sauvignon during the first years within the long-term VineyardFACE (Free Air Carbon dioxide Enrichment) study 

Understanding grapevine responses to increasing atmospheric CO2 (aCO2) concentrations is crucial for assessing the impact of climate change on viticulture. Previously, at the VineyardFACE (Free Air Carbon dioxide Enrichment) experiment in Geisenheim, leaf gas exchange measurements were made as Vitis vinifera cv. Cabernet Sauvignon established from planting (2014 to 2016) under aCO2 or elevated CO2 (eCO2, aCO2 + 20%) concentrations. Contrary to many preceding observations with grapevines and other perennial plant species the young vines showed an increased intrinsic water use efficiency (WUEi) that was mainly associated with an increase in net assimilation (A) rather than a decrease in stomatal conductance (gs) under eCO2.

Read More

Analysis of mousy off-flavour wines

Winemakers are increasingly experimenting with new techniques, such as spontaneous fermentation, prolonged yeast contact, higher pH, minimal sulphur dioxid, filtration and clarification or oxidative ageing. Along with this, the risk of microbial spoilage increases, and so the off-flavour mousiness, long time underestimated, is becoming more frequent. Characteristic of the mousy off-flavour is the delayed perception after swallowing the wine. After a few seconds the flavour appears, reminiscent of a dirty mouse cage. There are three known compounds that cause mousy off-flavor: 2-ethyltetrahydropyridine, 2-acetyltetrahydopyridine, and 2-acetylpyrroline. Yeasts such as Dekkera/Brettanomyces and heterofermentative lactic acid bacteria like Lactobacillus hilgardii can release these compounds.

Read More

NADES extraction of anthocyanins derivatives from grape pomace

Grape pomace is one of the main by-products generated after pressing in wine-making. It’s valorization through the extraction of bioactive compounds is the answer for the development of sustainable processes. Nevertheless, in the recovery of anthocyanins derivatives, the extraction stage continues to be a limiting step. The nature of the sample and the type of solvent determine the efficiency of the process

Read More

Relevance of the polyphenolic profile during oxidative aging in the accumulation and disappearance of oxidative and varietal aromas

The main objective of this work is to study and model the impact of the polyphenolic profile on the stability and quality of wine aroma during oxidative aging.

Read More

The interplay between water deficit and nitrogen and potassium nutrition in Vitis vinifera L.

Climate change is expected to provoke an increase in the frequency and intensity of drought events and water scarcity that will have detrimental effects on photosynthesis and plant yield. To sustain an appropriate plant yield under sub-optimal conditions, a common practice is the application of high amounts of fertilizers with negative environmental consequences. The present study aims at evaluating the interplay between water and nutrient availability, namely nitrogen (N) and potassium (K), in two grapevine cultivars with a different sensitivity to water shortage stress. Two-year-old Vitis Vinifera cv. Cabernet Sauvignon and Grenache grapevine plants grafted on SO4 rootstock have been transferred in pots under semi-environmental conditions.

Read More