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).

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

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

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…

“Terroir” studies in the Côtes du Rhône controlled appellation: from zoning to application

This work gives a summary of the most important programmes about viticultural « terroirs », developed on the « Côtes du Rhône » controlled appellation area for about twenty years.

Caractérisation des terroirs viticoles champenois

The Champagne vineyard extends over 35,300 ha under the Appellation d’Origine Contrôlée, of which 30,000 are in production. It mainly covers 3 departments: in order of importance, Marne (68% of the appellation area), Aube (22%) and Aisne (10%), and more anecdotally Haute Marne and Seine and Mame. It is a young vineyard (for more than half of the surface, the winegrowers have the experience of only one generation of vines), and fragmented (more than half of the exploitations extend over less than 1 ha; the average size of a cadastral parcel is 12 ares).

EXPLORING THE METABOLIC AND PHENOTYPIC DIVERSITY OF INDIGENOUS YEASTS ISOLATED FROM GREEK WINE

Climate change leads to even more hostile and stressful for the wine microorganism conditions and consequently issues with fermentation rate progression and off-character formation are frequently observed. The objective of the current research was to classify a great collection of yeast isolates from Greek wines based on their technological properties with oenological interest. Towards this direction, fourteen spontaneously fermented wines from different regions of Greece were collected for further yeast typing. The yeast isolates were subjected in molecular analyses and identification at species level.

Analytical and Chemometric Investigation of Phenolic Content of South African Red Wines

Phenolic compounds have been the focus of a lot of research in recent years for their important contribution to sensory characteristics of wine, their beneficial health effects, as well as the possibility they offer of characterising wines. In this contribution, a method is developed that allows the direct injection of wine samples followed by liquid

Illuminating vineyard management: Elevating operational efficiency through advanced sensing and data analytics

In this video recording of the IVES science meeting 2024, Luca Brillante (California State University, Fresno, USA) speaks about vineyard management, advanced sensing and data analytics. This presentation is based on an original article accessible for free on OENO One.