terclim by ICS banner
IVES 9 IVES Conference Series 9 NACs intra-family hierarchical transcriptional regulatory network orchestrating grape berry ripening

NACs intra-family hierarchical transcriptional regulatory network orchestrating grape berry ripening

Abstract

Considering that global warming is changing berry ripening timing and progression, uncovering the molecular mechanisms and identifying key regulators governing berry ripening could provide important tools in maintaining high quality grapes and wine. NAC (NAM/ATAF/CUC) transcription factors represent an interesting family due to their key role in the developmental processes control, such as fruit-ripening-associated genes expression, and in the regulation of multiple stress responses. Between the 74 NAC family members, we selected 12 of them as putative regulators of berry ripening: NAC01, NAC03, NAC05, NAC11, NAC13, NAC17, NAC18, NAC26, NAC33, NAC37, NAC60 and NAC61. Genome wide analyses and functional assays permitted to reconstruct a hierarchical intra-family regulatory network in which most of the selected NACs resulted as transcriptional activators of other NACs. Moreover, to investigate the common regulative role of the selected NACs on the grapevine transcriptome, all the annotated V. vinifera genes were listed and the most represented genes between all the DAP-seq results were identified. Interestingly, at the top of the ranking we found many genes related to maturation and senescence such as an indole-3-acetic acid-amido synthetase, which could be involved in the establishment and maintenance of low IAA concentrations in ripening berries, a laccase, encoding for a phenylpropanoid pathway-related enzyme, the senescence-inducible chloroplast stay-green protein 1, triggering Chl degradation, and the UTP-glucose-1-phosphate uridylyltransferase, encoding for a carbohydrate-metabolism-related enzyme which is highly expressed in berries at veraison. All these results lay a foundation stone in understanding the genetic regulation of such a complex process as fruit ripening.

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Chiara Foresti1*, Alessandra Amato1, Luis Orduña2, Chiara Fattorini1, Erica D’Incà1, Nicola Vitulo1, José Tomás Matus2, Sara Zenoni1

1Department of Biotechnology, University of Verona, Verona, Italy.
2Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, Valencia, Spain

Contact the author*

Keywords

Berry ripening, cistrome, NAC, hierarchical intra-family network

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Ceramic imprint in wine: influence of hydraulic ratio on ceramic dissolution and wine pH in amphorae systems

This interaction is primarily due to an acidic attack on the ceramic by the wine. It results in (1) the dissolution of the ceramic into the wine and the release of a wide variety of elements; and (2) an increase of the wine pH. The extent of these effects depends on the mineralogical and chemical composition of the ceramic, as well as the hydraulic ratio of the ceramic-wine system (the term hydraulic ratio (ρ) defines here the volume of wine over the surface area of the ceramic in contact with the wine).

Technical efficiency and socio-environmental sustainability in the wine sector: tradeoff or complementarity? Evidence from Italy

In recent decades, sustainability has risen to prominence across various industries, including agriculture, spurred by initiatives such as the new common agricultural policy and the farm to fork strategy within the European Union. Among agricultural activities, viticulture stands as a crucial player in sustainability, intertwining environmental, social, and economic dimensions, as exemplified by the OIV general principles of sustainable viticulture. Italy, one of the main players in the global wine market, has long been making efforts towards the introduction of sustainability-oriented practices and certifications.

Improvement of non-Saccharomyces yeast dominance during must fermentation by using spontaneous mutants resistant to SO2, EtOH and high pressure of CO2

AIM: A genetic study of four wine T. delbrueckii strains was done. Spore clones free of possible recessive growth‐retarding alleles with enhanced resistance to winemaking stressing conditions were obtained from these yeasts. METHODS: The genetic marker of resistance to cycloheximide (cyhR) allows easy monitoring of the new mutants obtained from these yeasts.

Assessing the Effectiveness of Electrodialysis in Controlling Brettanomyces Growth in Wine

Brettanomyces yeast can negatively impact the quality and stability of wines, posing a significant challenge to winemakers. [1] This study aims to develop novel management practices to limit Brettanomyces impact on wines by evaluating the effectiveness of electrodialysis (ED) technology in removing magnesium (Mg2+) from wine to prevent the development of Brettanomyces yeast. The ED technique utilizes charged membranes to extract ions from the wine, and it is considered an alternative to cold stabilization that requires less energy. [2]

Influenza delle componenti climatiche e pedologiche sulla variabilità dei contenuti polifenolici in alcuni ambienti vitati della DOCG Sagrantino di Montefalco

Obiettivo del progetto è la valutazione dell’influenza climatica e pedologica dell’areale di Montefalco sul vitigno Sagrantino, ponendo particolare attenzione alla componente polifenolica e antocianica. Sono stati quindi messi a confronto, a partire dal 2001 fino al 2008, sei differenti zone tutte situate all’interno dell’areale DOCG Sagrantino di Montefalco; per ciascun vigneto alla vendemmia sono state effettuate analisi sui parametri analitici e sul contenuto polifenolico e antocianico delle uve. Ognuna delle sei zone è inoltre stata caratterizzata dal punto di vista pedoclimatico, valutando l’influenza del clima e della tipologia di suolo sui parametri analitici presi in considerazione.