terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Metatranscriptomic analysis of “aszú” berries: the potential role of the most important species of the grape microbiota in the aroma of wines with noble rot

Metatranscriptomic analysis of “aszú” berries: the potential role of the most important species of the grape microbiota in the aroma of wines with noble rot

Abstract

Botrytis cinerea has more than 1200 host plants and is one of the most important plant pathogens in viticulture. Under certain environmental conditions, it can lead to the development of a noble rot, which results in a specific metabolic profile, altering physical texture and chemical composition. The other microbes involved in this process and their functional genes are poorly characterised. We have generated metatranscriptomic [1,2] and DNA metabarcoding data from three months of the Furmint grape variety, representing the four phases of noble rot, from healthy berries to completely dried berries. We performed weighted gene co-expression network analysis (WGCNA) to investigate the clustering of genes from B. cinerea and other microbes. Apart from B. cinerea, the genes of the most important filamentous fungi and yeasts in our samples showed enrichment mostly in the last phase of noble rot. Among the metabolic pathways identified, we highlighted those that may have an impact on the aroma composition of wines from noble rot grapes. These components could be the basis for further studies of metabolomic interest.

Acknowledgements: This work was financed by the NRDI fund – TKP2021-NKTA-16 – “Research and development to improve sustainability and climate resilience of viticulture and oenology at the Eszterházy Károly Catholic University”

References:

  1. Otto, M., et. al. (2022). Botrytis cinerea expression profile and metabolism differs between noble and grey rot of grapes.Food Microbiology, 106, 104037., DOI: 10.1016/j.fm.2022.104037
  2. Hegyi, Á. I., et. al. (2022). Metatranscriptomic Analyses Reveal the Functional Role of Botrytis cinerea in Biochemical and Textural Changes during Noble Rot of Grapevines.Journal of Fungi, 8(4), 378., DOI: 10.3390/jof8040378

DOI:

Publication date: October 5, 2023

Issue: ICGWS 2023

Type: Article

Authors

Hegyi, Ádám István1,2; Otto, Margot1; Hegyi-Kaló, Júlia1; Cels, Thomas1; Gomba-Tóth, Adrienn1; Golen, Richárd1; Geml, József1,3; Váczy, Kálmán Zoltán1

1 Eszterházy Károly Catholic University, Food and Wine Research Institute 3300 Eger Eszterházy sq. 1. HUNGARY
2 Doctoral School of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, HUNGARY
3 ELKH-EKKE Lendület Environmental Microbiome Research Group, Eszterházy Károly Catholic University, 3300 Eger, HUNGARY

Contact the author*

Keywords

transcriptomics, noble rot, bioinformatics, omics, wine aroma, microbiome

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Understanding the impact of rising temperatures due to climate change on aromatic compositions in Malbec wines from Mendoza, Argentina

Mendoza is one of Argentina’s most important and outstanding wine regions producing the renowned Malbec wines due to its optimal soil and weather conditions. However, the effects of 21st-century climate change would negatively impact Malbec wines quality. This study investigated the effect of temperature increase and the impact of plant hormone abscisic acid (ABA) used to mitigate the negative effect of temperature increase on Malbec wines aromatic composition through GC-MS. Four treatments were applied on vines at field condition: Control, Control + 3 ºC, ABA and ABA + 3 ºC.

Read More

Development and validation of a free solvent UHPLC/MS-MS method to analyse melatonin and its precursors in Spanish commercial wines  

Melatonin is a bioactive compound present in foods and beverages such as wines. During alcoholic fermentation, yeast transforms tryptophan into certain indole compounds, including melatonin. This paper aims to develop and validate a free solvent analytical method by ultra-high performance liquid chromatography coupled with high resolution mass spectrometry (UHPLC/MS-MS) to determine melatonin and its precursors (L-tryptophan, tryptamine, serotonin, tryptophol, N-acetylserotonin, 5-hydroxytryptophan, and 3- indoleacetic) that appropriately prevent the matrix effect.

Read More

Prediction of aromatic attributes of red wines from its colour properties 

Wine perception is a multisensory experience that makes use of the sight, smell, and taste senses. When wine is sensorially assessed, the stimulus received generates multiple signals that tasters convert into organoleptic descriptors. Colour is commonly the first attribute evaluated during wine tasting. Moreover, the colour properties provide the taster with a priori information of the wine’s aroma. This preconceived perception is later confirmed or denied during the aroma evaluation.

Read More

Effect of abiotic stress and grape variety on amino acid and polyamine composition of red grape berries

Vines are exposed to environmental conditions that cause abiotic stress on the plants (drought, nutrient and mineral deficits, salinity, etc.). Polyamines are growth regulators involved in various physiological processes, as in abiotic plant stress responses. Stressful conditions can modify grape’s composition, and in this work, we have focused on studying the effect of abiotic stress on the composition of polyamines and amino acids in grapes. In addition, the effect of grape variety on these compounds has been studied.

Read More

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.

Read More