terclim by ICS banner
IVES 9 IVES Conference Series 9 Proteomic profiling of grape berry presenting early loss of mesocarp cell vitality

Proteomic profiling of grape berry presenting early loss of mesocarp cell vitality

Abstract

From fruit set to ripening, the grape berry mesocarp experiences a wide range of dynamic physical, physiological, and biochemical changes, such as mesocarp cell death (MCD) and hydraulic isolation. The premature occurrence of such events is a characteristic of the Niagara Rosada (NR) variety, utilised as table grapes and winemaking. In our opinion, the onset of ripening would not cause MCD, but a down-regulation of respiratory enzymes during the early loss of cell viability, while maintaining membrane integrity. For this, we investigated three distinct developmental stages (green (E-L33), veraison (E-L35), and ripe (E-L39)) of NR berries by label-free proteomics, enzymatic respiratory activity and outer mesocarp imaging. Cell wall-modifying proteins were found to accumulate differently throughout ripening, while cytoplasmic membranes continue intact. In addition, the reduction in the mitochondria cristae density occurred simultaneously with the decrease of malate dehydrogenase and succinate dehydrogenase activities. By proteomics, we identified 956 differentially accumulated proteins, of which most were down-regulated at ripening. However, several respiratory enzymes were among the most abundant proteins at ripening, showing the maintenance of respiratory activity. Furthermore, we hypothesized that gluconeogenesis originating from malate can happen in NR berries, and that sucrose futile cycles may become an important system for storing and unloading carbohydrates. Therefore, the present data indicate that the premature loss of berry mesocarp vitality in NR was not associated with cell death. Moreover, the grape variety and cultivation region can influence protein abundance, enriching our understanding of grape berry proteome and ripening dynamics in tropical conditions.

Download the abstract

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Eduardo Monteiro1, Luan Cordeiro Corrêa1, Roberta Pena de Paschoa2, Vanildo Silveira2, Ricardo Enrique Bressan-Smith1*

1 Universidade Estadual do Norte Fluminense, Plant Physiology Lab
2 Universidade Estadual do Norte Fluminense, Laboratório de Biotecnologia

Contact the author*

Keywords

grapevine, tropical viticulture, berry maturation

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Delaying grapevine budbreak and/or phenological stages

In the current climatic context, with milder winters leading to earlier budburst in most wine regions, vines are exposed to the risk of spring frosts for a longer period. Depending on the year, frost can lead to yield losses of between 20 and 100 %, jeopardizing the economic survival of wine estates. In addition, by destroying young shoots, spring frosts can impact the following season’s production, by reducing the number of canes available for pruning, for example. Late pruning is one method to combat spring frosts.

Read More

Colloidal color stabilization in wine: A comparative study of Saccharomyces and non-Saccharomyces mannoproteins

Structure-function relationships between the polysaccharide part of S. cerevisiae Mannoprotein Pools (MPs) and their potential to interact with anthocyanins and Protein-Tannins aggregates was previously assessed [1,2].

Read More

Chenin Blanc Old Vine character: evaluating a typicality concept by data mining experts’ reviews and producers’ tasting notes

Concepts such as typicality are difficult to demonstrate using the limited set of samples that can be subjected to sensory evaluation. This is due both to the complexity of the concept and to the limitations of traditional sensory evaluation (number of samples per session, panel fatigue, the need for multiple sessions and methods, etc.). On the other hand, there is a large amount of data already available, accumulated through many years of consistent evaluation. These data are held in repositories (such as Platter’s Wine Guide in the case of South Africa Wine, wineonaplatter.com) and in technical notes provided by the producers.

Read More

Influence of successive oxygen saturations of a grape juice, supplemented or not with laccase, on its color and hydroxycinnamic acids concentration

Aim: This work studies how successive O2 saturations affects the color and hydroxycinnamic
acids concentration in the absence and presence of laccase from B. cinerea with the aim of better understanding the browning processes.

Materials and methods: Grapes of Muscat of Alexandria were harvested and pressed with a vertical press to extract 60% of their juice. Aliquots of 30 mL of this must were placed in 60 mL flasks equipped with a pill (PreSens Precision Sensing GmbH) for measuring oxygen by luminescence (Nomasense TM O2 Trace Oxygen Analyzer).

Read More

Modification on grape phenolic and aromatic composition due to different leafroll virus infections

Viral diseases are reported to cause several detrimental effects on grapevine. Among them, leafroll, due to single or mixed infection of GLRaV1 and GLRaV3, and rugose wood, associated to GVA, are considered the most widespread and dangerous.

Read More