terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Induction of polyphenols in seedlings of Vitis vinifera cv. Monastrell by the application of elicitors

Induction of polyphenols in seedlings of Vitis vinifera cv. Monastrell by the application of elicitors

Abstract

Contamination problems arising from the use of pesticides in viticulture have raised concerns. One of the alternatives to reduce contamination is the use of elicitors, molecules capable of stimulating the natural defences of plants, promoting the production of phenolic compounds (PC) that offer protection against biotic and abiotic stress. Previous studies on Cabernet-Sauvignon seedlings demonstrated that foliar application of elicitors methyl jasmonate (MeJ) and benzothiadiazole (BTH) increased proteins and PC involved in grapevine defence mechanisms. However, no trials had been conducted on Monastrell seedlings, a major winegrape variety in Spain. To address this gap, a trial was conducted to assess whether MeJ and BTH application could enhance the biosynthesis of PC involved in the defense mechanisms of Monastrell seedlings. The trial involved grapevine seedlings of the Monastrell variety grown in individual pots in a controlled environment. Four treatments were administered, including water (control), MeJ, BTH, and a combination of MeJ and BTH. Leaf samples were collected at various time intervals, and the quantification of stilbenes and flavonols was carried out. The results demonstrated that the elicitor treatments positively influenced the biosynthesis of stilbenes and flavonols. The application of MeJ led to significant increases in the production of key grapevine antimicrobial stilbenes, as well as some flavonols, particularly at 18-hours after treatment. These increases remained above control levels throughout the trial. The effects of BTH and MeJ+BTH treatments were less pronounced compared to MeJ alone, with the highest increase observed at 24-hours after treatment. However, they were always greater than the control. Overall, the findings suggest that the application of MeJ and BTH has the potential to improve the defence mechanisms of Monastrell vines, reducing reliance on chemical treatments. Further research is needed to validate the elicitor activity of MeJ and BTH against common grapevine diseases.

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

D. Paladines-Quezada1*, J. D. Moreno-Olivares2, M. J. Giménez-Bañón2, J. A. Bleda-Sánchez, A. Cebrián-Pérez, J. C. Gómez-Martínez, J. I. Fernández-Fernández2 y Rocío Gil-Muñoz2

1Grupo VIENAP, Instituto de Ciencias de la Vid y del Vino (CSIC, Universidad de La Rioja, Gobierno de La Rioja), Ctra. de Burgos, km. 6, 26007 (Logroño, Spain).
2Instituto Murciano de Investigación y Desarrollo Agrario y Medioambiental (IMIDA). Ctra. La Alberca s/n, 30150 (Murcia, Spain).

Contact the author*

Keywords

stilbenes, induced resistance, elicitor, vineyard

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Agronomic and oenological behavior of the minority Mandón variety on two rootstocks in the D.O. Arribes

A large population of vines of the Mandón minority red variety (synonymous with Garró) has been located in old vineyards of the D.O. Arribes (Zamora and Salamanca) to conserve and recover this minority variety. The wines made with this variety are characterized by their good structure and color, interesting harmony, an excellently low pH, with high acidity, as well as complex aromas of blue fruits and a marked and expressive minerality.
Read More

Effect of spray with autochthonous Trichoderma strains and its secondary metabolites on the quality of Tempranillo grape

Trichoderma is one of the most widely used fungal biocontrol agents on vineyards due to its multiple benefits on this crop, such as its fungicidal and growth promoting capacity. In this work, we have analyzed the effect on the concentration of nutrients in grapevine leaves and on the quality of the grape must after spraying an autochthonous strain of Trichoderma harzianum and one of the main secondary metabolites produced by this genus, 6-pentyl-α-pyrone (6PP).

Read More

Volatile composition of Cabernet Sauvignon wines from Argentina, Portugal and Spain

Cabernet Sauvignon is one of the most cultivated grape varieties worldwide being grown in different environmental conditions due to its excellent adaptability. Volatile compounds deeply contribute to the sensory properties of wines therefore to wine quality. The aim of this work was to compare the aroma profile of Cabernet Sauvignon wines from different geographical areas and climatic conditions, namely from Argentina, Portugal and Spain, from the vintage 2022. In addition, the volatile composition of the Cabernet Sauvignon Portuguese wines from three vintages was evaluated.

Read More

Assessing the Effectiveness of Electrodialysis in Controlling Brettanomyces Growth in Wine

Brettanomyces yeast can negatively impact the quality and stability of wines, posing a significant challenge to winemakers. [1] This study aims to develop novel management practices to limit Brettanomyces impact on wines by evaluating the effectiveness of electrodialysis (ED) technology in removing magnesium (Mg2+) from wine to prevent the development of Brettanomyces yeast. The ED technique utilizes charged membranes to extract ions from the wine, and it is considered an alternative to cold stabilization that requires less energy. [2]

Read More

Exploring the prevalence of esca-induced leaf symptoms in French vineyards and the role of climate: a national scale analysis

Esca, a severe trunk disease affecting vineyards, is caused by fungal pathogens that induce wood necrosis and decay, leaf symptoms, yield losses, and potentially a rapid death of the vine. The prevalence of this disease varies across years, regions, cultivars, and plot ages. Despite its significance in understanding and predicting dieback risk in different vineyards, the role of climate in trunk diseases remains a relatively unexplored research area. While some studies have demonstrated the impact of certain climatic conditions on the prevalence of the disease, they often focus on a limited number of plots and yield conflicting results.We conducted a statistical analysis, using a Bayesian approach on a national database comprising prevalence data of esca from over 500 different plots in France, spanning the years 2003 to 2022 and encompassing various cultivars.

Read More