terclim by ICS banner
IVES 9 IVES Conference Series 9 Chemical activation of ABA signaling in grapevine through ABA receptor agonists

Chemical activation of ABA signaling in grapevine through ABA receptor agonists

Abstract

Grapevine (Vitis vinifera) and its derived products, in terms of cultivated area and economic volume, constitute the most relevant fruit crop in the world (7.5 million cultivated hectares). In the current context of climate change, the wine sector faces unprecedented challenges to satisfy a growing demand for wines of greater quality through sustainable viticulture. Global warming threatens quality wine production in Mediterranean wine regions in particular. The increase in heatwaves and drought episodes accelerate the vine phenology and alter the ripening and composition of grapes and wine. Extreme abiotic stress episodes compromise grape production and plant survival, intensifying the pressure on the use of limited resources like water. Abscisic acid (ABA) is an important hormone in the ripening of certain fruits and in plant response to abiotic stress. The application of ABA may be an appropriate strategy to facilitate the vine’s adaptations to stress, modulating the production and quality of grapes. Several studies have shown that ABA initiates and regulates ripening in non-climacteric berries such as grapes. One of the ABA’s roles is increasing the production of anthocyanin. There is an emerging field for the development of molecules that act as ABA receptor agonists but have a longer half-life. These agonists are small molecules that can modulate ABA signaling in a timely, dynamic, and exogenous manner. We explored the use of ABA receptor agonists (iSB09 and AMF4) in grapevine cultivars (Bobal and Tempranillo) to induce ABA-like responses that might benefit plant adaptation to drought or grape composition.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Mar Bono1, Raul Ferrer-Gallego2, Alicia Pou3, Pablo Carbonell-Bejerano3, Leonor Deis2, Jose Miguel Martinez-Zapater3, Diego S. Intrigliolo2 and Pedro L. Rodriguez*1

1 Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia, ES-46022 Valencia
2 Centro de Investigaciones sobre Desertificación (CIDE), Consejo Superior de Investigaciones Científicas-Universitat de València-Generalitat Valenciana, ES-46113 Moncada (Valencia)
3 Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de la Rioja, Universidad de La Rioja), Finca La Grajera, Ctra. Burgos Km. 6, 26007 Logroño

Contact the author*

Keywords

abscisic acid, ABA receptor, agonist, abiotic stress, Bobal-Tempranillo

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Sustainable yield management through fruitfulness and bunch architecture manipulation

Vineyards are highly variable and this variation is largely driven by environmental conditions and seasonal variation. For example, warm temperatures

Read More

EFFECT OF DIFFERENT VITICULTURAL AND ENOLOGICAL PRACTICES ON THE PHENOLIC COMPOSITION OF RED WINES

Global climate change is exerting a notable influence on viticulture sector and grape composition. The increase in temperature and the changes in rainfall pattern are causing a gap between phenolic and technological grape maturities [1]. As a result, the composition of grapes at harvest time and, consequently, that of wines are being affected, especially with regards to phenolic composition. Hence, wine quality is decreasing due to changes in the organoleptic properties, such as color and astringency, making necessary to implement new adaptive technologies in wineries to modulate these properties in order to improve wine quality.

Read More

Taking advantage of difficulties. Variable rate application based on canopy maps to achieve a sustainable crop

Aim: The aim of this work was to evaluate the use of Variable Rate Application technologies based on prescription maps in commercial vineyards with large intra-parcel variability to achieve a more sustainable distribution of Plant Protection Products (PPP)

Read More

The role of malolactic bacteria metabolism on the organoleptic qualities of wines

Lactic acid bacteria (LAB) are essential microorganisms in winemaking due to their role in malolactic fermentation (MLF) [1]. This process not only ensures the biological stabilization of wine through the decarboxylation of malic acid into lactic acid but also contributes to modifications in the chemical composition of the wine [2][3].

Read More

Exogenous dsRNA applications to identify novel candidate susceptibility genes to downy mildew

One of the major threats to viticulture is represented by fungal pathogens. Plasmopara viticola, an oomycete causing grapevine downy mildew, is one of the principal causes of grape production losses. The most efficient management strategies are represented by a combination of agronomical practices, fungicides’ applications, and use of resistant varieties. Plant resistance is conferred by the presence of resistance (R) genes. Opposed to them, susceptibility (S) genes are encoded by plants and exploited by pathogens to promote infection. Loss or mutation of S genes can limit the ability of pathogens to infect the host. By exploiting post-transcriptional gene silencing, known as RNA intereference (RNAi), it is possible to knock-down the expression of S genes, promoting plant resistance.

Read More