terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Volatilome in grapevine leaves is defined by the variety and modulated by mycorrhizal symbiosis

Volatilome in grapevine leaves is defined by the variety and modulated by mycorrhizal symbiosis

Abstract

Volatile organic compounds (VOCs) constitute a diverse group of secondary metabolites key for the communication of plants with other organisms and for their adaptation to environmental and biotic stresses. The emission of these compounds through leaves is also affected by the interaction of plants with symbiotic microorganisms, arbuscular mycorrhizal fungi (AMF) among them [1]. Our objective was to know the concentration and profile of VOCs emitted by the leaves of two grapevine varieties (Tempranillo, T, and Cabernet Sauvignon, CS, grafted onto R110 rootstocks), inoculated or not with a consortium of five AMF (Rhizophagus irregularis, Funneliformis  mosseae, Septoglomus deserticola, Claroideoglomus claroideum and C. etunicatum). A total of 43 different VOCs were detected in both varieties by gas chromatography coupled to mass spectrometry (SPME GC-MS). The quantitative analyses revealed that leaves of CS had higher concentration of VOCs than those of T, the effect of the mycorrhizal symbiosis on the total levels of VOCs being non-significant. The predominant VOCs were those synthetized by the LOX/HPL pathway, followed by those coming from MVA/MEP pathway and, in a lesser extent, from SK pathway. Pentyl leaf volatiles (PLV), green leaf volatiles (GLV) and VOCs involved in the resistance of grapevine against Plasmopara viticola were more abundant in CS than in T, especially when plants were associated with AMF. The volatilome profiles obtained revealed that some minor VOCs were only present in one of the two tested grapevine varieties. Mycorrhizal association increased the relative abundance (%) of VOCs derived from the SK pathway in T and that of GLV in CS.

Acknowledgements: To A. Urdiain, M. Oyarzun & H. Santesteban for technical support, Asociación de Amigos (UNAV) for D. Kozikova’s scholarship, Bioera SL for AMF, Ministerio de Ciencia e Innovación (Gobierno España) funded the research (Ref. PID2020-118337RB-IOO)

References:

1)  Velásquez A. et al. (2020) The arbuscular mycorrhizal fungus Funneliformis mosseae induces changes and increases the concentration of volatile organic compounds in Vitis vinifera cv. Sangiovese leaf tissue. Plant Physiol. Biochem. 155: 437-443, DOI 10.1016/j.plaphy.2020.06.048

DOI:

Publication date: October 6, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Goicoechea Nieves1*, Kozikova Daria1, Pascual Inmaculada1

1Environmental Biology department- Group of Stress Physiology in Plants. School of Sciences-BIOMA, University of Navarra. Irunlarrea 1, 31008-Pamplona, Spain

Contact the author*

Keywords

Cabernet Sauvignon, leaves, mycorrhizal symbiosis, Tempranillo, volatile organic compounds

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Unraveling the complexity of high-temperature tolerance by characterizing key players of heat stress response in grapevine

Grapevine (Vitis spp.) is greatly influenced by climatic conditions and its economic value is therefore directly linked to environmental factors. Among these factors, temperature plays a critical role in vine phenology and fruit composition. In such conditions, elucidating the mechanisms employed by the vine to cope with heat waves becomes urgent. For the past few years, our research team has been producing molecular and metabolic data to highlight the molecular players involved in the response of the vine and the fruit to high temperatures [1]. Some of these temperature-sensitive genes are currently undergoing characterization using transgenesis approaches coupled or not with genome editing, taking advantage of the Microvine genotype [2].

Barrels ad-hoc: Spanish oak wood classification by NIRs 

The wooden barrel is a key factor in enology, since wine chemical composition and sensory properties changes significantly in contact with the barrel[1]. Today’s highly competitive market constantly demands new differentiated products and wineries search innovations continuously.
Wood selection is crucial: barrels stability to keep constant their contribution and the result on products, and additional and differentiated wood contributions to impact their new products. Oak wood selection has traditionally been carried out using parameters such as specie, location and grain, however, it goes one step further nowadays. Large cooperage work with non-destructive techniques that allow classifying oak wood quickly and easily according to their organoleptic contribution[2].

Irrigation frequency in four grapevine red varieties in Spain. Effect on must volatile composition

The irrigation water management in the vineyard is a crucial aspect to obtain sustainable quality production over time. Previous studies have set the water requirements to be applied in the vineyard at 30 % of the reference evapotranspiration (ET0), although there are no studies that settle the effects of the frequency of irrigation application on red varieties in Spain. The present study contemplates the application of deficit irrigation (30 % ET0) applying a weekly dose in a single irrigation (T07) or in two irrigation events (T03) per week. The study has been carried out in 2021-2022 with four red varieties in different Spanish wine regions: Garnacha Tinta (Badajoz), Tempranillo (Valladolid), Syrah (Albacete) and Mencía (Lugo). The effects of irrigation frequency on must volatile composition have been evaluated through GC-MS.

Response of red grape varieties irrigated during the summer to water availability at the end of winter in four Spanish wine-growing regions: berry phenolic composition

Water availability is the most limiting factor for vineyard productivity under Mediterranean conditions. Due to the effects caused by the current climate change, wine-growing regions may face serious soil moisture conservation problems, due to the lower water retention capacity of the soil and higher soil irradiation. The aim of this work was to evaluate the effects of soil recharge irrigation in pre-sprouting and summer irrigation every week (30 % ETo) from the pea size state until the end of ripening (RP) compared to exclusively summer irrigation every week (R) in the same way that RP, on berry phenolic composition at harvest.

Extreme vintages affect grape varieties differently: a case study from a cool climate wine region

Eger wine region is located on the northern border of grapevine cultivation zone. In the cool climate, terroir selection is one of the foundations of quality wine making. However, climate change will have a significant impact on these high value-added vineyards. This study presents a case study from 2021 and 2022 with the investigation of three grape varieties (Kadarka, Syrah, Furmint). The experiment was conducted in a steep-sloped vineyard (Nagy-Eged hill) with a southern exposure.