terclim by ICS banner
IVES 9 IVES Conference Series 9 Simulated climate change in a Mediterranean organic vineyard altered the plant physiology and decreased the vine production

Simulated climate change in a Mediterranean organic vineyard altered the plant physiology and decreased the vine production

Abstract

This study focuses on investigating the effects of climate change on the plant physiology and berries of Vitis vinifera cv “Monastrell” in a commercial vineyard managed organically in Southeastern Spain (Jumilla, Murcia).  For this purpose, open top chambers and rainout shelters were employed to simulate warming (~2-7 ºC, W) and rainfall reduction (~30%, RR) respectively. Additionally, a combination of both treatments (W+RR) was employed. Vines without either top chambers or rainout shelters were considered as control (C). The experiment was established in February of 2023. Predawn leaf water potential (measured using a pressure chamber), stomatal conductance (assessed with a porometer at mid-morning) and leaf chlorophyll and flavonoid content (measured using the Dualex® leaf clip sensor) were analyzed at veraison (5 months after the installation of structures). At harvest, the yield and dehydration rate of grapes were determined. The results revealed severe water stress (< -0.8 MPa) in all treatments, with a significant reduction in stomatal conductance in leaves of vines under the W+RR treatment. Moreover, warming treatments (W and W+RR) led to a significant decrease in flavonoid content. At harvest, grapes from the warming treatments resulted in a higher dehydration rate, showing a significant decrease in cluster weight compared to C and RR treatments. In conclusion, during the first year, treatments involving temperature increases and water restriction had a similar effect on the stress water indicators used; however, warming treatments induced a different metabolic response, influencing flavonoids and berries.

Acknowledgments : Funded by PDI2021124382OB-I00 project of the State Research Agency (Ministry of Science and Innovation, Spain).

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

L. Martín1, M.V. Alarcón2, M.E. Valdés3, M.M. Alguacil4

1 Plant Protection. Instituto de Investigaciones Agrarias Finca La Orden-Valdesequera. CICYTEX, 06187 Guadajira (Spain)
2 Agronomy of woody and horticultural crops. Instituto de Investigaciones Agrarias Finca La Orden-Valdesequera, CICYTEX, 06187 Guadajira (Spain)
3 Food and Agriculture Technology Institute of Extremadura (CICYTEX_INTAEX). Adolfo Suárez s/n Avenue, Badajoz, 06071, (Spain)
4CSIC-Centro de Edafología y Biología Aplicada del Segura. Department of Soil and Water Conservation. P.O. Box 164, Campus de Espinardo 30100-Murcia (Spain)

Contact the author*

Keywords

Monastrell, open-top chambers, rainout shelters, organic farming

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

CRISPR/Cas9-induced trehalase knockout for drought resistance in grapevine

Climate change is predicted to alter the water availability where grapevine is cultivated, potentially impacting grape yield and quality [1].

Read More

Understanding the impact of climate change on anthocyanin concentrations in Napa Valley Cabernet Sauvignon

Climate change is having a significant impact on the wine industry through more regular drought conditions, fires, and heat events, leading to crop loss. Furthermore, these events can reduce overall quality of the fruit, even when crop yields are not impacted. Anthocyanins are considered one of the most important classes of compounds for red wine production and are known to be sensitive to vine water status and heat events.

Read More

Port wine region settling

Cet exposé présente une caractérisation générale de la Région Délimitée du Douro (RDD), productrice des appellations Porto (vins généreux), et Douro pour des vins de qualité VQPRD.

Read More

Berry maturity effects on physic and chemical characteristics of traditional sparkling wines produced from Chardonnay and Sauvignon blanc grapes.

One of the consequences of global warming is the quick berry development giving rise to a disconnection between sugar accumulation and the formation of important quality minor compounds such as phenolics and volatile compounds being a huge challenge for the oenologist [1]. Thus, this phenomenon is forcing the search on strategies for maintaining the quality of wines despite this situation. One possibility is to make an early harvest with a low sugar concentration (18ºbrix) and advanced harvest for sparkling wine (20-21ºbrix) and afterwards to combine base wines properly and carry out the second fermentation trying to compensate the lack of secondary metabolites due to the quick berry development and higher alcohol degree of the second one, not adequate itself for sparkling wine. The aim of this study was to assess the chemical and physical characteristics, mainly volatile profile, and foaming properties of sparkling wines from grapes of Chardonnay and Sauvignon blanc.

Read More

Application of DEXI PM Vigne sustainability tool to the assessment of alternative vineyard protection strategies

Implementing alternative grapevine systems that incorporate sustainable strategies and innovative farming practices is essential. However, we lack tools for measuring the impact of these new practices on the overall sustainability of vineyards. DEXi PM Vigne (Gary et al., 2015) is a tool developed for ex ante assessment of the sustainability of grapevine cropping systems, from the plot to the farm scale. In the present study, we focused on implementing new strategies of integrated crop protection management with limited pesticide use in vineyards.

Read More