Discovering the process of noble rot: fungal ecology of grape berries during the noble rot transformation in different vineyards of the Tokaj wine region
Botrytis cinerea, a well-known grapevine pathogen, has more than 1200 host plants causing grey rot in grapevine berries. However, it can also result in a desirable phenomenon called noble rot under specific microclimate conditions. An extraordinary demonstration of this natural process can be observed in the creation of aszú wines within Hungary’s Tokaj wine region. Beside B. cinerea other fungi and yeasts are involved in the secondary metabolic development of the grape berry which contributes to the sensory and analytical characterization of noble rot wines. In our study, we generated DNA metabarcoding data from healthy, noble rot and grey rot berries   in 3 different vineyards from the Tokaj wine region from Furmint cultivar. We analyzed the fungal microbiome of the collected samples and characterized the location by its microbial ecology. The results found in our study can be a basis of further studies regarding to their functional role in the noble rot process and contribution to wine parameters.
Acknowledgements: This work was financed by MEC_R 141145 and the NRDI fund – TKP2021-NKTA-16.
- Hegyi-Kaló, J. et al. (2020). Physico-chemical characteristics and culturable microbial communities of grape berries change strongly during noble rot development.Plants, 9(12), 1809.
- 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
Issue: ICGWS 2023
1 Eszterházy Károly Catholic University, Food and Wine Research Institute 3300 Eger Leányka út 6. 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
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Noble rot, Aszú, Botrytis cinerea, Fungal metabarcoding, Phases of noble rot