terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Analysis of volatile composition of interaction between the pathogen E. necator and two grapevine varieties

Analysis of volatile composition of interaction between the pathogen E. necator and two grapevine varieties

Abstract

Volatile organic compounds (VOCs) are emitted by nearly all plant organs of the plants, including leaves. They play a key role in the communication with other organisms, therefore they are involved in plant defence against phytopathogens. In this study VOCs from grapevine leaves of two varieties of Vitis vinifera infected by Erysiphe necator were analysed. The varieties were selected based on their susceptibility to pathogen, Kishmish Vatkana has the Ren1 resistance gene and Zamarrica showed high susceptibility in previous trials. Three plants per variety were inoculated with a conidial solution (>105 conidias/ml). Leaves were extracted by headspace solid phase microextraction and analysed by GC-MS at 1 day post inoculation. More than 70 compounds were annotated, leaf extracts of Kishmish were richer in compounds than Zamarrica. In respond to pathogen, the accumulation of aldehydes, mainly 2-pentenal, and ethyl esters in Kismish were scored. Zamarrica had a greater number of compounds that modified their concentrations by the interaction. When compared between treated leaves of both varieties, differences in terpenes and aldehydes were found. These results show that VOCs may play an important role in the response to pathogen attack, but further transcriptomic analyses are required to know the possible effects of VOCs on defence system, mainly in the activation of resistance mechanisms.

Acknowledgements: Financial support from Ministerio de Ciencia Innovación y Universidades RTI2018-101085-R-C32.

DOI:

Publication date: October 6, 2023

Issue: ICGWS 2023

Type: Poster

Authors

María M. Hernández1*, Carolina Castillo Rio2, Sara Isabel Blanco González2, Cristina M. Menéndez1

1 Instituto de Ciencias de la Vid y el Vino (ICVV), Finca La Grajera, Carretera de Burgos km 6, 26007, Logroño
2 Dpto. de Agricultura y Alimentación, Universidad de La Rioja, C/Madre de Dios 51, 26006, Logroño

Contact the author*

Keywords

powdery mildew, plant defence, interaction plant – pathogen, secondary metabolites

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Biodiversity and biocontrol ability of Trichoderma natural populations in soil vineyards from Castilla y León region (Spain)

Trichoderma is a microorganism present in many agricultural soils and some of its species could be used as natural biological control agents. In this work, the presence of natural populations of Trichoderma was estimated in soil vineyard and its biocontrol capacity against Phaeoacremonium minimum, one of the main agent causals of grapevine trunk diseases instead of using pesticides. Moreover, physicochemical variables in soil such as pH, organic matter and nutrients were evaluated to determine a possible correlation to natural populations of Trichoderma.

Organic mulches slightly influence wine phenolic composition and sensorial properties

Grapevines have traditionally been grown in semi-arid areas, but viticulture is now compromised by climate change. Therefore, it is necessary to implement environmentally friendly viticulture practices to adapt grapevines to current climatic conditions. In this context, organic mulches offer many benefits, such as reduced soil erosion and increased organic matter, soil water content and crop productivity. However, these practices must not compromise grape and wine quality. Therefore, the objective of this study was to evaluate the effect on wine physicochemical and phenolic composition and sensorial properties of different soil management practices on the vine row. Over four years, five soil treatments were examined in two different vineyards.

Acceptability of canned wines: effect of the level of involvement of consumers and type of wine

In recent years there has been a growing demand for alternative packaging designs in the food industry focused on diminishing the carbon footprint. Despite the environmental advantages of cans versus bottles, the traditional environment of wine has hindered the establishment of less contaminant containers. In this context, the objective of this study was to understand and generate knowledge about consumers´ perception of canned wines in comparison to bottled wines.

Molecularly imprinted polymers: an innovative strategy for harvesting polyphenoles from grape seed extracts

Multiple sclerosis (MS) is a multifactorial autoimmune disease associating demyelination and axonal degeneration developing in young adults and affecting 2–3 million people worldwide. Plant polyphenols endowed with many therapeutic benefits associated with anti-inflammatory and antioxidant properties represent highly interesting new potential therapeutic strategies. We recently showed the safety and high efficiency of grape seed extract (GSE), a complex mixture of polyphenolics compounds comprising notably flavonoids and proanthocyanidins, in an experimental autoimmune encephalomyelitis (EAE) mouse model of MS.

Impact of toasting and botanical origin on oak wood (Q. sp.) volatilome using untargeted GCxGC-ToFMS analysis

Many works have been carried out to identify the key aroma volatile compounds of oak wood (e.g., whisky-lactone, furfural, maltol, eugenol, guaiacol, vanillin) using conventional gas chromatography coupled with olfactometry and mass spectrometry (GC-O-MS). Inspired by recent untargeted approaches in the field of food “omics”, this work aims to extend our knowledge on the impact of cooperage process on the volatile composition of oak wood using two-dimensional comprehensive gas chromatography coupled with time of flight mass spectrometry (GCxGC-ToFMS).