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…

Integrative study of Vitis biodiversity for next-generation breeding of grapevine rootstocks 

Drought is one of the main challenges for viticulture in the context of global change. The choice of rootstock could be leveraged for vineyard adaptation to drought as we can improve plant performance without modifying the scion variety. However, most of the existing rootstocks, selected over a century ago, have a narrow genetic background which could compromise their adaptive potential.
Read More

Effect of foliar application of urea and nano-urea on the cell wall of Monastrell grape skins

The foliar application of urea has been shown to be able to satisfy the specific nutritional needs of the vine as well as to increase the nitrogen composition of the must. On the other hand, the use of nanotechnology could be of great interest in viticulture as it would help to slow down the release of urea and protect it against possible degradation. Several studies indicate that cell wall synthesis and remodeling are affected by nitrogen availability.

Read More

Green pruning of shoots to force new sprouting of buds, in fruit set and in pea size: vegetative, productive and maturation effects, in cv. Verdejo

The context of climate crisis leads to the acceleration of technological ripening of grapes, with unsuitable loss of acidity, so various vineyard management alternatives are being considered to delay the grape ripening. The delay of the vegetative cycle towards a period of milder temperatures affects ripening, but vine behavior can vary according to the area, conduction, watering, variety, etc. A work is proposed to know the response to the green pruning of shoots, executed in fruit set and in pea size, in cv. Verdejo.

Read More

High-throughput sequencing analysis based on nematode indices revealed healthier soils of organic vineyards 

Proper soil health assessments are crucial for sustainable cropland. Among the widely employed approaches, evaluating nematode community structure is particularly suitable. Traditionally, the taxonomic characterization of soil nematodes has relied on time-consuming morphology-based methods requiring experienced experts. However, molecular tools like high-throughput sequencing have emerged as efficient alternatives. In this study, we performed a metataxonomic analysis of soil samples collected from 57 vineyards in the DOCa Rioja region of Northern Spain, focusing on the impact of organic viticulture and cover cropping compared to integrated pest management (IPM) and tilling practices.

Read More

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison. In all solutions were added 1ml/l of Tween 80 ® surfactant.

Read More