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…

Volatilome in grapevine leaves is defined by the variety and modulated by mycorrhizal symbiosis

Volatile organic compounds (VOCs) constitute a diverse group of secondary metabolites key for the communication of plants with other organisms and for their adaptation to environmental and biotic stresses. The emission of these compounds through leaves is also affected by the interaction of plants with symbiotic microorganisms, arbuscular mycorrhizal fungi (AMF) among them [1]. Our objective was to know the concentration and profile of VOCs emitted by the leaves of two grapevine varieties (Tempranillo, T, and Cabernet Sauvignon, CS, grafted onto R110 rootstocks), inoculated or not with a consortium of five AMF (Rhizophagus irregularis, Funneliformis mosseae, Septoglomus deserticola, Claroideoglomus claroideum and C. etunicatum).
Read More

Implications of the nature of organic mulches used in vineyards on grapevine water status, yield, berry quality and biological soil health  

Climate emergency is going to affect the agricultural suistainability, wine grapes being probably one of the crops more sensitive to environmental constraints. In this context, mitigation strategies such as the revalorization of agricultural wastes are paramount to cope with the current challenges. The use of organic mulches has been reported to reduce soil water evaporation and improve vine water status, reduce soil erosion, and increase soil organic matter with little impact on berry quality. However, less is known about their effects on the microbiote of vineyards.

Read More

Effect of abiotic stress and grape variety on amino acid and polyamine composition of red grape berries

Vines are exposed to environmental conditions that cause abiotic stress on the plants (drought, nutrient and mineral deficits, salinity, etc.). Polyamines are growth regulators involved in various physiological processes, as in abiotic plant stress responses. Stressful conditions can modify grape’s composition, and in this work, we have focused on studying the effect of abiotic stress on the composition of polyamines and amino acids in grapes. In addition, the effect of grape variety on these compounds has been studied.

Read More

Grapevine adaptation to drought and resistance to Neofusicoccum parvum, causal agent of Botryosphaeria dieback

The sustainability of viticulture in response to climate change has been addressed mainly considering agronomic impacts, such as water management and diseases, either separately or together.
In grapevines, there is strong evidence that different genotypes respond differently to biotic and abiotic stresses. A screening was conducted on various local cultivars in response to drought and Neofusicoum parvum infection aiming to evaluate their susceptibility to abiotic stress and resistance to fungal diseases.

Read More

Effects of long-term drought stress on soil microbial communities from a Syrah cultivar vineyard

Changes in the rainfall and temperature patterns affect the increase of drought periods becoming one of the major constraints to assure agricultural and crop resilience in the Mediterranean regions. Beside the adaptation of agricultural practices, also the microbial compartment associated to plants should be considered in the crop management. It is known that the microbial community change according to several factors such as soil composition, agricultural management system, plant variety and rootstock.

Read More