terclim by ICS banner
IVES 9 IVES Conference Series 9 Berry shrivel causes – summarizing current hypotheses

Berry shrivel causes – summarizing current hypotheses

Abstract

Diverse ripening disorders affect grapevine resulting in high economic losses worldwide. The common obvious symptom is shriveling berries, however the shriveling pattern and the consequences for berry quality traits are distinct in each disorder. Among them, the disorder berry shrivel is characterized by a reduced sugar accumulation short after the onset of berry ripening leaving the clusters unsuitable for wine processing. Although our knowledge on BS increased recently, potential internal or external triggers contributing to the induction of BS are yet to be explored. Based on previously obtained results, we speculate on three main hypotheses for future research: i) BS starts with a failure in phloem unloading of sugar and its metabolism in berry cytosol, ii) the brush area of berries is subjected to a premature cell death starting BS and further promotes programmed cell death in other berry areas and pedicels, and iii) the onset of berry ripening is disturbed either by phytohormone or other signals with consequences on sink strength. Sampling strategies need to be adapted to account for ripening asynchrony and include pre-symptomatic clusters. Additionally, innovative ideas and new methodological approaches are necessary to decipher the spatial and temporal factors in BS induction on the biochemical, transcriptional and morphological level. BS is a challenge for viticulture, as prevention strategies are currently not reliable. Identifying the causal events could facilitate to adapt vineyard management to reduce BS risks.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Michaela Griesser*1, Stefania Savoi2, Bhaskar Bondada3, Astrid Forneck1, Markus Keller4

1 University of Natural Resources and Life Sciences, Vienna (BOKU), Institute of Viticulture and Pomology, Austria
2 University of Turin, Department of Agricultural, Forest and Food Sciences, Italy
3 Washington State University Tri-Cities, Department of Viticulture and Enology, USA
4 Washington State University, Irrigated Agriculture Research and Extension Center, Department of Viticulture and Enology, USA

Contact the author*

Keywords

sugar metabolism, mesocarp cell death, ripening onset regulation

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Polyphenol content examination of Tokaji Aszú wines

We must state that two conditions above are only prevalent in the case when the processed grapes are full or over ripened, besides following the Tokaj wines preparation criterions (grape variety, soil, microclimate, vintage, etc.). These two conditions mentioned before were followed up only sensory based analysis up to now, altough the study of chemical idetified compounds which confirms these are obviuos.

Read More

Adsorption capacity of phenolics compounds by polyaniline materials in model solution

The aim of this work was to study the trapping capacity of four polyaniline polymers towards phenolic compounds in wine-like model solutions. METHODS: The model wine solution was composed of 12% (v/v) and 4 g/L of tartaric acid adjusted to pH = 3.6. A series of centrifuge tubes (15 mL) were filled with 10 mL of model solution enriched with 50 mg/L of five phenolic compounds (i.e., Gallic acid, caffeic acid, (+)-catechin, (-)-epicatechin, and rutin), and treated with different doses of PANI polymer (i.e., 0, 2, 4 and 8 g/L). After the addition of the polymer, the samples were stirred using a platform shaker at room temperature (20 ºC) for 2, 8, 16 and 24 h. All treatments included three replications.

Read More

Effect of climate and soil on phenology and ripening of Vitis vinifera cv Touriga acional in the Dão region

“Terroir” has been acknowledged as an important factor in wine quality
and style. It can be defined as an interaction between climate, soil, vine (cultivar, rootstock) and human
factors such as viticultural and enological techniques. Soil and climate are the two components of the “Terroir” with an important role on the vine development and berries ripening. The present study is focused on the effects of the weather conditions and the soil characteristics on the phenological and berries ripening dynamics of the “Touriga Nacional” in Dão region.

Read More

Oxygen consumption and changes in chemical composition of young wines

The study of the capacity to consume oxygen of the wines is an aspect of great interest since it allows to analyse their useful life.

Read More

Ripening behaviour and grape must quality of eleven white resistant varieties in Trentino

In a situation of uncertainty towards the overall effect of climate change and the reduction of pestice utilization on quality, the wine sector needs to maintain the profitability of producers, which inexorably depends on ensuring the quality of grapes and wines. Among the various alternatives that can be adopted, hybrid varieties carrying resistance genes are currently gaining the attention of researchers and producers. Some of them are already a reality and are included in the national catalogue of some countries, selected by research institutes all over Europe.

Read More