 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

Study of the oenological potential of varieties resistant to cryptogamic diseases and drought to anticipate varietal selection in Occitanie

In the context of climate change and the growing need to reduce the use of phytosanitary products, the exploration of disease-resistant grape varieties and/or adapted to drought conditions is becoming crucial for the wine industry in certain regions of France, such as Occitanie. Currently, exploring the oenological potential of varieties by analyzing their biochemical composition before and after winemaking comes rather late in the varietal selection process.

Soil management as a key factor on vineyard behavior under semiarid conditions: effects on soil biological activity, plant water and nutrient status, and grape yield and quality

Aims: Viticulture practices linked with soil management, as cover crops and deficit irrigation, can help to regulate the vineyard behavior reducing in most cases plant vigor and modifying plant water and nutrient status, and as a consequence, grape yield and quality. Also, these practices can modify the soil biological activity mostly related to microbiome diversity and functionality.

SIP and save the planet: a sensory and consumer exploration of australian wines made from potentially drought-tolerant white wine grapes

In order to attenuate the effects of climate change on the ability to cultivate quality wine grape vines in Australia, it is essential to adapt to the projected less favourable Australian climate scenarios. One response may be to convert a portion of the current grapevine plantings to those varieties that demand less water and can tolerate increased heat. This investigation aimed to (i) generate sensory profiles and (ii) obtain knowledge about Australian wine consumers’ preferences and opinions of Australian wines made from potentially drought tolerant, white wine grape varieties not traditionally cultivated in Australia. A Rate-All-That-Apply (RATA) sensory panel (n = 49) generated sensory profiles of 44 commercial white wines made from 7 different white grape varieties (Arinto, Fiano, Garganega, Greco, Verdejo, Verdelho and Vermentino), plus two benchmark examples each of an Australian Riesling, Pinot Gris and Chardonnay wine.

When organic chemistry contributes to the understanding of metabolism mechanisms

Many compounds of interest in wine are difficult to analyze since they are present in very small quantities or they are unstable. The need for reliable data led scientists to develop complex method in order to overcome the analytical difficulties and provide accurate quantitative data for grape or wine characterization.

Gambellara zoning: climate and soil effect on the aromatic fresh and dried grape composition and wine aroma

La région de production de la Gambellara et Recioto di Gambellara DOC (variété Garganega), tout en n’intéressant qu’une surface limitée, présente une certaine variabilité de milieu due à la morphologie du territoire (colline et plaine), à l’état actuel des sols et aux variations climatiques entre les différents sites. Pour les années 2001, 2002