terclim by ICS banner
IVES 9 IVES Conference Series 9 Screening table grape cultivars using cell wall ELISA and glycan microarrays for berry firmness and quality parameters

Screening table grape cultivars using cell wall ELISA and glycan microarrays for berry firmness and quality parameters

Abstract

The crunchy texture of table grapes is one of the key quality parameters during production. This varies from cultivar to cultivar, stage of harvest and vineyard performance. Cell wall properties are key drivers of berry quality (e.g., pericarp firmness and intactness) at harvest and beyond. Common practise amongst producers is to continuously monitor firmness by evaluating pericarp appearance of cross-sectioned berries prior to harvest. These qualitative methods can be quite arbitrary and imprecise in their execution, but more quantitative, yet simple and high-throughput methods to evaluate these cell wall polymers are not yet readily available. A promising avenue is to link carbohydrate arrays targeting cell wall polymers with more traditional biochemical methods with rapid infrared spectroscopy tools to ‘chemotype’ the cell walls of cultivars at specific stages of development (ripeness). We have integrated immunochemical datasets from over 15 different cultivars, such as ‘Crimson Seedless’ and ‘Prime’ which are well-known: with less well characterised cultivars such as ‘Autumn Crisp’ and ‘Sugar Crisp’ offering a means to ‘snapshot’ or ‘fingerprint’ the cell wall chemotype using spectroscopic methods. The ultimate aim would be to both provide new knowledge on berry cell walls of important cultivars as well as progressing the potential development of infrared sensing technology for predicting table grape cell wall quality (predicting if grapes will progress to soft or firm berries). The datasets and predictive models produced from this survey will be correlated with firmness and textural analysis performed on grape berries from different varieties and stages of ripeness.

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Article

Authors

John P. Moore1*, Miguel Henriques1, Eugene Badenhorst1, Bodil JØrgensen2, Talitha Venter1

1 South African Grape and Wine Research Institute, Department of Viticulture and Oenology, Faculty of AgriSciences, Stellenbosch University, South Africa
2 Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark

Contact the author*

Keywords

Cell walls, ripeness, berry firmness, spectroscopy, cultivars

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Launching the GiESCO guide

Considering that the transfer of research results to the professional level is one of the keys to progress, GiESCO proposes to publish a technical guide supported by scientific references and in the form of standard sheets.

The impact of differences in soil texture within a vineyard on vine development and wine quality

Marlborough Sauvignon Blanc has rapidly gained an international reputation for style and quality. The extent to which this can be attributed to the climate, soils or vineyard management is at present unclear. However, the young alluvial soils of the Wairau Plains are considered to play an important role in determining this unique wine style. Marked changes in soil texture occur on the Wairau Plains over short distances.

Développer des outils simples pour accompagner les viticulteurs dans leurs changements de pratiques et répondre aux enjeux du siècle à venir

French viticulture is currently facing major challenges as it enters the new century: climate change, the need to reduce inputs, societal issues, changing consumer habits, labor shortages …. Vinopôle bordeaux-aquitaine, to which the teams from the chambre d’agriculture de la gironde belong, supports winegrowers of the gironde and bergerac-duras regions in the gradual evolution of their practices.

Effects of the biodynamic preparations 500 and 501 on vine and berry physiology, pedology and the soil microbiome

In the pursuit of increasing sustainability, climate change resiliency and independence of synthetic pesticides in agriculture, the interest of consumers and producers in organic and biodynamic farming is steadily increasing. This is in particular the case for the vitivinicultural industry in Europe, where more and more producers are converting from organic to biodynamic farming. However, clear scientific evidence showing that biodynamic farming improves vine physiology, vine stress resilience, berry or wine quality, or is more sustainable for the environment is still lacking although this issue has been addressed by several research teams worldwide.

Portuguese grapevine varieties as a solution to tackle climate change challenges on wines

Portugal has about 250 grapevine varieties, but they could only be useful if tested in vineyards and on winemaking trials.