terclim by ICS banner
IVES 9 IVES Conference Series 9 Exploring the regulatory role of the grapevine MIXTA homologue in cuticle formation and abiotic stress resilience

Exploring the regulatory role of the grapevine MIXTA homologue in cuticle formation and abiotic stress resilience

Abstract

The outer waxy layer of plant aerial structures, known as the cuticle, represents an important trait that can be targeted to increase plant tolerance against abiotic stresses exacerbated by environmental transition. The MIXTA transcription factor, member of the R2R3-MYB family, is known to affect conical shape of petal epidermal cells in Anthirrinum, cuticular thickness in tomato fruit and trichome formation and morphology in several crops. The aim of this study was to investigate the role of the grapevine MIXTA homologue by phenotypic and molecular characterization of overexpressing and knock-out grapevine lines. The leaf cuticle was observed by light microscopy, indicating that stomatal density and other anatomical features, such as trichomes and pavement cell number, were affected by modulation of VviMIXTA. GC-MS analysis found that epicuticular wax loads and composition were similarly impacted. Physiological parameters collected on a randomized set of plants in controlled conditions showed that stomatal conductance was also affected. Selected lines, identified via VviMIXTA gene expression analysis, underwent RNA-seq to evaluate the transcriptomic impact of modulating VviMIXTA expression. The results were cross-referenced with DAP-seq data to identify MIXTA high confidence target genes. Additionally, further integration of the experimental data with in silico resources available for grapevine (e.g., OneGenE and aggregated tissue-specific GCNs) is being conducted for reconstructing MIXTA´s gene regulatory network. Our work explores the potential regulatory role of VviMIXTA in epidermal cell fate and cuticular wax composition in the grapevine leaf, paving the way for molecular breeding to enhance plant resilience and improve berry quality traits.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Carlotta Pirrello1*, Jenna Bryanne Jolliffe1,2, Lorenzo Vittani1, Luis Orduña3, Paolo Sonego1, Michele Faralli1,4, José Tomás Matus3, Stefania Pilati1, Justin Graham Lashbrooke2,5, Claudio Moser1

1 Research and Innovation Centre, Edmund Mach Foundation, San Michele all’Adige, 38098, Italy
2 South African Grape and Wine Research Institute, Stellenbosch University, Stellenbosch, 7600, South Africa
3 Institute for Integrative Systems Biology (I2SysBio), Universitat de Valencia-CSIC, Paterna, 46908, Valencia, Spain
4 Center Agriculture Food Environment (C3A), University of Trento, via Mach 1, San Michele all’Adige, 38098, Italy
5 Department of Genetics, Stellenbosch University, Stellenbosch, 7600, South Africa

Contact the author*

Keywords

Vitis vinifera, cuticle, stomata, trichomes, multi-omics data

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Analysis of the interaction of melatonin with glycolytic proteins in Saccharomyces cerevisiae during alcoholic fermentation 

Melatonin is a bioactive compound with antioxidant properties, that has been found in many fermented beverages, such as beer and wine [1]. Indeed, it has been shown that yeast can synthesize melatonin during alcoholic fermentation, although its role inside the cell, as well as the metabolic pathway involved in its synthesis, is still unclear [1]. Recent studies showed that during fermentation, melatonin interacts with different proteins of the glycolytic pathway in both Saccharomyces and non-Saccharomyces yeast, for instance glyceraldehyde 3-phosphate dehydrogenase, pyruvate kinase or enolase [2].

Read More

Assessing macro-elements contents in vine leaves and grape berries of Vitis vinifera using near-infrared spectroscopy coupled with chemometrics

The cultivated vine (Vitis vinifera) is the main species cultivated in the world to make wine. In 2017, the world wine market represents 29 billion euros in exports, and France contributes 8.2 billion (28%) to this trade, making it a traditional market of strategic importance. Viticulture is therefore a key sector of the French agricultural economy. It is in this context that the nutritional diagnosis of the vine is of real strategic interest to winegrowers. Indeed, the fertilization of the vine is a tool for the winegrower that allows him to influence and regulate the quality of the wine.

Read More

Evaluation of biodegradable mulch for weed control with focus on vineyard performance

Context and Purpose of the Study. The use of herbicides and mechanical soil tillage, particularly on steep slopes, poses significant ecological challenges, including soil compaction and erosion.

Read More

Influence of viticulture on the temporary evolution of the landscape: the case of the AO Ribera del Duero (Central Spain)

The European Landscape Convention (ELC, 2001) defined the landscape as the “part of a
territory as perceived by the population and resulting from the action of natural and/or human factors and their interrelationships”. Wine landscapes, protected or not under figures such as cultural landscapes or Cultural heritage, are a clear demonstration of this definition, denoting the interrelationships of the natural
environment and the action of the human, which modulates the territory to give the different wine
landscapes. This work was focused on the study of the effect of the human factors linked to the cultivation of the vine on the modification of the landscape.

Read More

The relationship of wine store customers with the areas of production, considering provenance and tourism

This work aims at identifying the most appropriate marketing strategies to inform consumers of the global market about the added value of the wines of Friuli Venezia Giulia.

Read More