Grapevine treatment with bagasse vermicompost changes the microbiome of Albariño must and wine and improves wine quality

Winemaking is a well-known process comprising several steps to produce must and wine. Grape marc byproduct of wine production that can be vermicomposted used as organic fertiliser. vermicompost has richer more stable microbiome than grape alone when added the soil vineyards it improve quality. We compared Albariño microbiotas from grapevines treated with derived controls (standard fertilisation). hypothesised observed microbial changes are connected improved organoleptic properties in fertilised Treated vines showed increased final properties. Metataxonomic analyses 16S rRNA ITS gene regions varied their taxonomic composition. Must bacteriotas no significant (p < 0.05) variation alpha or beta-diversity, while mycobiotas differences richness evenness, well structure (beta-diversity) between control grapevines. also predicted metabolic pathways. Our study suggests abundance specific bacterial fungal taxa processes they carry out during winemaking productivity grapevine