terclim by ICS banner
IVES 9 IVES Conference Series 9 Long-Term impact of elevated CO2 exposure on grapevine physiology (Vitis vinifera L. cvs. Riesling & Cabernet Sauvignon)

Long-Term impact of elevated CO2 exposure on grapevine physiology (Vitis vinifera L. cvs. Riesling & Cabernet Sauvignon)

Abstract

Over the next 25 years, the Intergovernmental Panel on Climate Change (IPCC 2013) predicts a ~20% increase in atmospheric carbon dioxide (CO2) concentration compared to the current level. Concurrently, temperatures are steadily rising. Grapevines, known for their climate sensitivity, will show changes in phenology, physiological processes and grape compositions in response. Investigating eco-physiological processes provides insights into the response of field-grown grapevines to elevated CO2 conditions. A Free Air Carbon Dioxide Enrichment (FACE) facility was established in the Rheingau region of Germany. Two grapevine varieties (Vitis vinifera L., cvs. Riesling and Cabernet Sauvignon) were planted, with the VineyardFACE comprising three rings with ambient atmospheric CO2(approx. 400 – 420 ppm from 2014 to 2023, aCO2) and three rings with elevated CO2 concentration (+20% to ambient; eCO2). Abaxial leaf imprints revealing that both varieties reached their highest stomatal density in the early years of the study. Riesling leaves exhibited a higher density compared to Cabernet Sauvignon. In a warmer year like 2020, both varieties responded with a lower density. With continuously exposition to eCO2 the differences in stomatal conductance became increasingly negligible. The net photosynthesis of both varieties peaked in the later and warmer period of the study (2018 – 2022), with plants under elevated CO2 concentration achieving significantly higher assimilation rates. Accompanying this, plants under aCO2 conditions exhibited a higher non-photochemical quenching, whereas electron transport rate and photochemical quenching under eCO2 conditions were higher. Long-term studies are necessary to estimate the consequences for growers in the future.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Susanne Tittmann*, Lilian Schmidt, Manfred Stoll

University Geisenheim, Department of general and organic viticulture, Von-Lade-Str. 1, D-65366 Geisenheim, Germany

Contact the author*

Keywords

climate change, viticulture, grapevine physiology, elevated CO2 concentration, FACE facility

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Effects of yeast product addition and fermentation temperature on lipid composition and sensory of pinot noir wines

AIM: Firm tissues of grapes and yeast are the major sources of lipids in wine.

Read More

Assessing the benefits of irrigation access: the case of Southern France vineyards

Agriculture worldwide is threatened by climate change. In particular, declining water resource availability combined with increasing water demand is a key challenge in many rainfed areas, where irrigation appears to be a straightforward adaptation option. In this context, assessing the impacts of irrigation adoption on farm yields and incomes is a necessary step to reflect on the impact of both ex-post and ex-ante policies.

Read More

Hyperspectral imaging for the appraisal of varietal aroma composition along maturation in intact Vitis vinifera L. Tempranillo Blanco berries

The knowledge of the grape aromatic composition during ripening provides very important information for winegrowers, who may carry out different viticultural practices, or determine the harvest date more accurately. However, there are currently no tools that allow this measurement to be carried out in a non-invasive and rapid way. For this reason, the aim of this work was to design a non-invasive methodology, based on hyperspectral imaging to estimate the aromatic composition and total soluble solids (TSS) of Tempranillo Blanco berries during ripening.

Read More

Short-term canopy strategies to enhance grapevine adaptation to climate change

Context and purpose of the study. Viticulture faces significant challenges due to climate change, with increased frequency of extreme weather events impacting grapevine growth, grape quality, and wine production.

Read More

Ecodesign tools and approaches in viticulture for professionals and learners, contributions of the Vitarbae project

The agro-ecological transition in winegrowing can benefit from the environmental assessment of practices to inform producers’ technical choices. life cycle assessment (lca) evaluates the environmental impact of a product over its entire life cycle. this paper takes a look at the tools available for the detailed assessment and eco-design of winegrowing practices, their uses and developments in the vitarbae research project (2023-2026). this project aims to establish and equip support and training courses for the agroecological transition in viticulture and fruit arboriculture.

Read More