terclim by ICS banner
IVES 9 IVES Conference Series 9 Decline of rootstock-mediated physiological responses in Tempranillo grapevines by prolonged extreme conditions

Decline of rootstock-mediated physiological responses in Tempranillo grapevines by prolonged extreme conditions

Abstract

Agriculture faces many global warming challenges especially in the Mediterranean region. Many strategies have been proposed in viticulture to manage global warming. Rootstocks are among them since they may affect water uptake and the scion’s performance.

The study conducted in La Rioja, Spain, aimed to investigate the impact of different rootstocks (1103P and 161-49C) on the performance of the Tempranillo grapevine scion over a three-day cycles under drought and extreme conditions, specifically during a heatwave in July 2022, with maximum air temperatures up to 40ºC and average daily temperatures of 29.1ºC. The physiological parameters measured included stomatal conductance (gs), photosynthesis (AN), transpiration (E), mid-day (ѰMD), intrinsic water use efficiency (WUEi) and abscisic acid (ABA) concentrations.

The results indicated that water stress treatment significantly affected all physiological parameters throughout the three-day cycle. Interestingly, the rootstocks did not show a significant impact on AN or gs, except for water potential. The rootstock effect on AN and gs was observed during the initial hours of the day on specific days, particularly coinciding with the lowest daytime temperature.

Notably, ABA levels were affected by water stress only on the first day of measurement, at the beginning of the heatwave. However, this effect disappeared on subsequent days (195 and 200) when ABA concentrations reached their highest levels. Surprisingly, the rootstocks did not influence ABA levels.

Our data suggest that, the physiological effects triggered by the rootstocks in grapevine tend to diminish under prolonged extreme events such as heat waves, high temperatures and water scarcity.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

David Labarga1, Andreu Mairata1, Miguel Puelles1, Ignacio Vicente-Diez1, Javier Manzanares1, Elisabet Vaquero1, Alfonso Albacete2, Álvaro Galán1, Alicia Pou1*

1 Instituto de Ciencias de la Vid y del Vino, CSIC, Gobierno de la Rioja, Universidad de La Rioja, 26006 Logroño, Spain
2 Departamento de Nutrición Vegetal, Centro de Edafología y Biología Aplicada del Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario de Espinardo, Espinardo, 30100 Murcia, Spain

Contact the author*

Keywords

Global warming, drought, plant physiology, phytohormones, vineyard

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Gestión de la mitigación por las empresas vitivinícolas: combinar sostenibilidad y rentabilidad

The transition to a decarbonized economy requires companies to adopt mitigation measures. The wine sector is one of the most affected by climate change and, therefore, interested in its mitigation. The question is how this process develops. To address this, we build on a previous study [1], which identified different types of Spanish wineries based on their sustainability approach.

Read More

Wine yeast species show strong inter- and intra-specific variability in their sensitivity to uv-c radiation

While the trend in winemaking is toward reducing the inputs and especially sulphites, the development of While the trend in winemaking is toward reducing the inputs

Read More

Predictive Breeding for Wine Quality: From Sensory Traits to Grapevine Genome

New pathogen resistant varieties allow an efficient and greatly reduced use of fungicides. These new varieties promise, therefore, an enormous potential to reach the European Green Deal aim of a 50% reduction of pesticides in EU agriculture by 2030.

Read More

Switch genes as a key to understand the grapevine ripening disorder berry Shrivel?

The ripening of grapevine berries encompasses complex morphological and physiological processes, especially at veraison. Berry shrivel (BS) is a ripening physiological disorder affecting grape berries with visible symptoms appearing short after veraison. The main symptoms of BS are a strong reduction in sugar accumulation, inhibited anthocyanin biosynthesis and high pH values. The most popular red grape cultivar in Austria “Blauer Zweigelt” (Vitis vinifera L.) is specifically prone to develop the BS ripening disorder and up to date a no specific cause or causes could be identified. Recently omics approaches have identified and characterized key processes during grapevine ripening. Among them a small subset of genes, called SWITCH, have been described as markers for the onset of the ripening process in fruits.

Read More

Response of different nitrogen supplementation on Saccharomyces cerevisiae metabolic response and wine aromatic profile

The wine yeast Saccharomyces cerevisiae can highly affect wine aromatic profile by producing and/or mediating the release of a whole range of metabolites (such as thiols, esters, and terpenes), which in turn contribute to enhanced aroma and flavor. These metabolites depend on yeast metabolism activated during fermentation which can constitute the ‘’metabolic footprint’’ of the yeast strain that carried out the process.

Read More