 IVES 9 IVES Conference Series 9 Macrowine 9 Macrowine 2021 9 Grapevine diversity and viticultural practices for sustainable grape growing 9 Elicitors application in two maturation stages of Vitis vinifera L. cv Monastrell: changes on the skin cell walls

Elicitors application in two maturation stages of Vitis vinifera L. cv Monastrell: changes on the skin cell walls

Abstract

AIM: In a recent study, it was determined that the mid-ripening period is the most suitable for the application of methyl jasmonate (MeJ), benzothiadiazole BTH and MeJ+BTH on Monastrell grapes, to favor maximum accumulation of phenolic compounds at the time of harvest. However, the increase in the anthocyanin content of grapes was not reflected in all the wines (Paladines-Quezada et al., 2021). For this reason, the aim of this work was to evaluate whether the application of two pre-harvest elicitors, MeJ and BTH on Monastrell grapes during two maturation stages, affects the composition and structure of their skin cell walls.

METHODS: This study was conducted for two years (2016 and 2017) on Vitis vinifera L. cv Monastrell, located in Jumilla (southeast Spain). A foliar application was carried out with a water suspension of 2 elicitors: (MeJ) 10 mM; (BTH) 0.3 mM, and a mixture of both. The treatments were applied at different timings of ripening (at veraison and mid-ripening). For all treatments, a second application was performed 7 days after the first application. The composition of the berry skin cell wall was analyzed.

RESULTS: MeJ and MeJ+BTH treatments applied at veraison had the greatest influence on the composition of the skin cell walls. They decreased the concentration of hemicellulose and pectic derivatives, and increased the concentration of lignin, proteins and phenols. On the other hand, BTH applied at veraison and mid-ripening was the only treatment that increased the concentration of cellulose in the skin cell walls.

CONCLUSIONS:

MeJ and MeJ+BTH treatments increased the concentration of the main components involved in cell wall strengthening. This fact can contribute to resistance to fungal attacks, but it can make it difficult to extract polyphenols from the skin during the maceration process

DOI:

Publication date: September 1, 2021

Issue: Macrowine 2021

Type: Article

Authors

Diego F., Paladines-Quezada ,José I. FERNÁNDEZ-FERNÁNDEZ, IMIDA Juan D. MORENO-OLIVARES, IMIDA Juan A. BLEDA-SÁNCHEZ, IMIDA Rocío GIL-MUÑOZ

Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), Ctra. La Alberca s/n, 30150. Murcia-Spain

Contact the author

Keywords

Methyl jasmonate, benzothiadiazole, veraison, mid-ripening

Citation

Un exemple de valorisation d’une étude de terroir au sein d’une unité coopérative de production à Saint Hilaire d’Ozilhan (Gard) dans les cotes du Rhône

The winegrowers of the intercommunal cooperative cellar of Saint Hilaire d’Ozilhan have been practicing terroir selection for ten years. Five years ago, after having equipped themselves with an efficient commercial structure, and anxious to improve knowledge of their terroirs and to better control quantitatively and qualitatively the range of typicality that they can develop, they asked the Syndicate Général des Vignerons Réunis des Côtes du Rhône and the Institut Coopératif du Vin to help them set up an approach to better judge the behavior of the Grenache and Syrah grape varieties in the different terroirs, then to enhance this work through the improving product quality.

Contribution of very high resolution satellite remote sensing to the mapping of harvest zones in the Maipo Valley (Chile)

Les images de très haute résolution spatiale sont utilisées depuis peu en viticulture comme une aide à la cartographie des zones de vendanges. A partir d’images multispectrales de très haute résolution spatiale IKONOS (résolution 4 m) et SPOT-5 en supermode (résolution 2.5 m), on propose ici une démarche de segmentation d’une région de vignoble en zones de vendanges.

Assessing the benefits of irrigation access: the case of Southern France vineyards

Agriculture worldwide is threatened by climate change. In particular, declining water resource availability combined with increasing water demand is a key challenge in many rainfed areas, where irrigation appears to be a straightforward adaptation option. In this context, assessing the impacts of irrigation adoption on farm yields and incomes is a necessary step to reflect on the impact of both ex-post and ex-ante policies.

Multi-mineral wine profiling and Artificial Intelligence: Implementing the signatures of each wine to train algorithms to meet the new challenges facing the wine industry

Multi-mineral wine profiling and artificial intelligence: implementing the signatures of each wine to train algorithms to meet the new challenges facing the wine industry. Although their quantity is minimal, minerals are essential elements in the composition of every wine. Their presence is the result of complex interactions between factors such as soil, vines, climate, topography, and viticultural practices, all influenced by the terroir. Each stage of the winemaking process also contributes to shaping the unique mineral and taste profile of each wine, giving each cuvée its distinctive characteristics.

Effects of soil and climate on wine style in Stellenbosch: Sauvignon blanc

Une étude a été menée pendant neuf ans sur deux vignes non-irriguées de Sauvignon blanc commercialisés, plantées à différentes localités (A et B) dans le district de Stellenbosch. Deux parcelles expérimentales, situées sur deux formations géologiques différentes, ont été identifiées au sein de chaque vignoble. A chaque localité une des