 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

Dual mode of action of grape cane extracts against Botrytis cinerea

Crude extracts of Vitis vinifera canes represent a natural source of stilbene compounds with well characterized antifungals properties. In our trials, exogenous application of a stilbene extract (SE) obtained from grape canes on grapevine leaves reduces the necrotic lesions caused by Botrytis cinerea

Il sistema vigneto del Lago di Bolsena: caratterizzazione della produzione di Cannaiola di Marta

Il comprensorio del Lago di Bolsena (VT) è un territorio ad elevata vocazione vitivinicola in cui il paesaggio della vite storicamente persiste e caratterizza la fisionomia dei luoghi. Qui gli agroecosistemi viticoli possiedono una valenza ecologico-ambientale, storico-culturale ed economica di rilievo.

Prevention of quercetin precipitation in red wines: a promising enzymatic solution

In this video recording of the IVES science meeting 2023, Simone Vincenzi (Department of agronomy, food, natural resources, animals and environment (DAFNAE), University of Padova, Italy) speaks about the prevention of quercetin precipitation in red wines with a promising enzymatic solution. This presentation is based on an original article accessible for free on OENO One.

‘Cabernet Sauvignon’ (Vitis vinifera L.) berry skin flavonol and anthocyanin composition is affected by trellis systems and applied water amounts

Trellis systems are selected in wine grape vineyards to mainly maximize vineyard yield and maintain berry quality. This study was conducted in 2020 and 2021 to evaluate six commonly utilized trellis systems including a vertical shoot positioning (VSP), two relaxed VSPs (VSP60 and VSP80), a single high wire (SH), a high quadrilateral (HQ), and a guyot (GY), combined with three levels of irrigation regimes based on different crop evapotranspiration (ETc) replacements, including a 25% ETc, 50% ETc, and 100% ETc. The results indicated SH yielded the most fruits and accumulated the most total soluble solids (TSS) at harvest in 2020, however, it showed the lowest TSS in the second season. In 2020, SH and HQ showed higher concentrations in most of the anthocyanin derivatives compared to the VSPs. Similar comparisons were noticed in 2021 as well. SH and HQ also accumulated more flavonols in both years compared to other trellis systems. Overall, this study provides information on the efficacy of trellis systems on grapevine yield and berry flavonoid accumulation in a currently warming climate.

Development of a semi-controlled setup for manipulating drought and heat stress in open field trials

Drought and heat stress will pose challenges for the future of viticulture and wine quality, as grapevine biological processes are pushed beyond their optimum conditions. Efforts are increasing to study and predict the effects of drought spells and heatwaves on grapevine physiology and resulting harvest quality. This calls for the development of adequate systems to induce and manipulate the required stress, especially in open field trials where conditions are more difficult to control. We present a semi-controlled system for studying drought and heat stress in grapevine in the field.