terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Genetic study of wild grapevines in La Rioja region

Genetic study of wild grapevines in La Rioja region

Abstract

Since the mid-1980s, several surveys have been carried out in La Rioja to search for populations of the sylvestrisgrapevine subspecies (Vitis vinifera L. subsp. sylvestris Gmelin). The banks of the Ebro River and its tributaries (Alhama, Cidacos, Leza, Iregua, Najerilla, Oja and Tirón rivers), as well as the surrounding vegetation of their valleys have been covered. So far, all the populations found are alluvial, forming part of the riparian vegetation of the Najerilla (the first reported population in La Rioja [1]), Iregua, and the vicinity of Oja valleys. Nevertheless, doubts arose from the beginning about the ‘sylvestris purity’ of some of these wild vines. In this work, leaves and/or cuttings from 83 vines have been used for genetic analyses: 63 vines were sampled in the wild in La Rioja region (17 from Najerilla banks, 43 from Iregua banks, and 3 from Agualinos stream, tributary of the Oja river), and 20 vines were sampled in the grapevine sylvestris collection of the University of La Rioja, originally collected as wild vines from the Najerilla valley. DNAs were extracted and genotyped at 6 microsatellite and 240 SNP markers. A total of 58 different genotypes were found, 20 in the Najerilla population, 36 in the Iregua population and 2 in the Oja population. These genotypes were included in a large genetic structure analysis of more than 2.800 genotypes representing worldwide sylvestrisand sativa subspecies. More than 84% of the wild samples from La Rioja showed a high membership coefficient to the sylvestris population, supporting their sylvestris condition. A local analysis focused on genotypes of cultivated and wild vines found in La Rioja separated them into two main clusters, with a clear division between sylvestris and cultivated vines. Some wild vine genotypes were found in intermediate positions between these two groups, indicating the existence of an introgression of the sativa gene pool into the sylvestris population, constituting an additional threat to the sylvestris subspecies.

Acknowledgements: This work is part of the project “Diversidad genética en la vid y adaptación al cambio climático” (PID2020-120183RB-I00), funded by MCIN / AEI /10.13039/501100011033.

1)  De Toda F. M. and J. C. Sancha (1999) Characterization of Wild Vines in La Rioja (Spain). Am. J. Enol. Vitic. 50: 443-446, doi: 10.5344/ajev.1999.50.4.443.

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Javier Ibáñez1*, Javier Tello1, Fernando Martínez de Toda1, José Manuel Valle2, Álvaro Rodríguez-Miranda2, Carlos Alvar Ocete3, José Miguel Martínez-Zapater1, Rafael Ocete3

1 Instituto de Ciencias de la Vid y del Vino (CSIC, UR, CAR). Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño, La Rioja. Spain
2 Built Heritage Research Group (GPAC), University of the Basque Country (UPV/EHU), Vitoria- Gasteiz. Spain
3 Freelance, Tirgo, La Rioja. Spain

Contact the author*

Keywords

introgression, genetic structure, microsatellite, SNP, sylvestris, Vitis vinifera, wild

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Sensory profile of wines obtained from disease-resistant varieties in La Rioja

The European wine industry is facing multiple challenges derived from climate change and the pressure of different fungal diseases that are compromising the production of traditional varieties. A sustainable alternative maybe the adoption of resistant varieties.
In this study, we have evaluated the enological potential of 9 resistant varieties (5 white and 4 red varieties) in La Rioja. Microvinifications were carried out with three biological replications. Oenological parameters were very diverse with acid content varying from 2.6 g/L to 6.6 g/L.

Read More

Mycorrhizal symbiosis modulates flavonoid and amino acid profiles in grapes of Tempranillo and Cabernet Sauvignon 

Arbuscular mycorrhizal fungi (AMF) symbiosis is probably the most widespread beneficial interaction between plants and microorganisms. AMF has been widely reported to promote grapevine growth, water and nutrient uptake as well as both biotic and abiotic stress tolerance[1]. However, the impact of AMF on grape composition has been less studied. The aim of this work was to evaluate the effects of the association between two commercial grapevine cultivars (Tempranillo and Cabernet Sauvignon grafted onto 110 rootstock) and AMF on the anthocyanin, flavonol and amino acid concentrations and profiles of grapes.

Read More

Late winter pruning induces a maturity delay under temperature-increased conditions in cv. Merlot from Chile

Chile is considered vulnerable to climate change; and these phenomena affect several mechanisms in the grape physiology and quality. The global temperature increase affects sugar contents, organic acids, and phenolic compounds in grapes, producing an imbalance maturity. In this sense, an alternative to reduce the impact is to perform pruning after vine budburst, known as “Late Pruning” (LP).

Read More

Effect of different plant fibers on the elimination of undesirable compounds in red wine. Correlation with its polysaccharide composition

The presence of undesirable compounds in wines, such as OTA, biogenic amines and pesticides residues, affects wine quality and can cause health problems for the consumer. The main tool that a winemaker has to reduce their content in the wine is fining. However, some of the fining agents commonly used in the winery can cause allergies or even increase the protein content in the wine, increasing the turbidity. To avoid these problems, the use of plant fibers may be an alternative, such as those from grape pomace[1] or other plant origins.

Read More

Cover crop management and termination timing have different effects on the maturation and water potentials of Glera (Vitis vinifera L.) in Friuli-Venezia Giulia

Inter-row soil tillage in vineyards, stimulates vigor and production due to the absence of competition for water and nutrients, however negatively affects organic matter content, soil erosion, and compaction, resulting in reduced fertility. In this study, we investigated the effects of different cover crop management approaches, including cultivation type and termination timing, on the physiological and productive responses of a Glera vineyard.
The experimental trial was conducted in Precenicco (UD) from 2019 to 2021. A commercial mixture for autumn cover cropping was sown in alternating rows, and the sowing pattern was changed each year.

Read More