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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

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