Abstract
Winemaking is a well-known process comprising several steps to produce must and wine. Grape marc is a byproduct of wine production that can be vermicomposted and used as organic fertiliser. Grape marc vermicompost has a richer and more stable microbiome than grape marc alone and when added to the soil of vineyards it can improve grape production and wine quality. We compared Albariño must and wine microbiotas from grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation). We hypothesised that observed microbial changes are connected to improved organoleptic properties observed in fertilised must and wine. Treated Albariño vines showed increased grape production and the final wine showed improved organoleptic properties. Metataxonomic analyses of the 16S rRNA and ITS gene regions showed that the Albariño must and wine microbiome varied in their taxonomic composition. Must bacteriotas showed no significant (p < 0.05) variation in alpha or beta-diversity, while wine bacteriotas and must and wine mycobiotas showed significant differences in richness and evenness, as well as in microbial structure (beta-diversity) between treated and control grapevines. Must and wine bacteriotas also showed significant (p < 0.05) changes in their predicted metabolic pathways. Our study suggests that changes in the abundance of specific bacterial and fungal taxa and the metabolic processes they carry out during Albariño winemaking can improve the productivity of the grapevine and the organoleptic properties of the wine.
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Claims 6
Claim · model-written summary
Vermicompost-treated Albariño grapevines showed increased grape production relative to controls.
- Treatment
- vermicompost derived from Albariño grape marce2
- Outcome
- grape productione1
- Direction
- increasede1
- Comparator
- controls (standard fertilisation)e2
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Treated Albariño vines showed increased grape production”
e2“grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation)”
Claim · model-written summary
Must bacteriota alpha and beta diversity showed no significant variation in vermicompost-treated grapevines compared with controls.
- Treatment
- vermicompost derived from Albariño grape marce2
- Interactor
- Must bacteriotase4symbiont
- Outcome
- alpha or beta-diversitye4
- Direction
- no significant (p < 0.05) variatione4
- Comparator
- controls (standard fertilisation)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation)”
e4“Must bacteriotas showed no significant (p < 0.05) variation in alpha or beta-diversity”
Claim · model-written summary
Wine bacteriotas showed significant differences in richness and evenness, and in microbial structure, between vermicompost-treated and control grapevines.
- Treatment
- vermicompost derived from Albariño grape marce2
- Interactor
- wine bacteriotase5symbiont
- Outcome
- richness and evennesse5
- Direction
- significant differencese5
- Qualifier
- as well as in microbial structure (beta-diversity)e5
- Comparator
- control grapevinese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation)”
e5“wine bacteriotas and must and wine mycobiotas showed significant differences in richness and evenness, as well as in microbial structure (beta-diversity) between treated and control grapevines”
Claim · model-written summary
Must and wine mycobiota showed significant differences in richness and evenness, and in microbial structure, between vermicompost-treated and control grapevines.
- Treatment
- vermicompost derived from Albariño grape marce2
- Interactor
- must and wine mycobiotase5symbiont
- Outcome
- richness and evennesse5
- Direction
- significant differencese5
- Qualifier
- as well as in microbial structure (beta-diversity)e5
- Comparator
- control grapevinese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation)”
e5“wine bacteriotas and must and wine mycobiotas showed significant differences in richness and evenness, as well as in microbial structure (beta-diversity) between treated and control grapevines”
Claim · model-written summary
The final wine from vermicompost-treated grapevines showed improved organoleptic properties relative to controls.
- Treatment
- vermicompost derived from Albariño grape marce2
- Outcome
- organoleptic propertiese3
- Direction
- improvede3
- Comparator
- controls (standard fertilisation)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation)”
e3“the final wine showed improved organoleptic properties”
Claim · model-written summary
Must and wine bacteriota showed significant changes in predicted metabolic pathways between vermicompost-treated and control grapevines.
- Treatment
- vermicompost derived from Albariño grape marce2
- Interactor
- Must and wine bacteriotase6symbiont
- Outcome
- predicted metabolic pathwayse6
- Direction
- changese6
- Comparator
- controls (standard fertilisation)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“grapevines treated with vermicompost derived from Albariño grape marc and controls (standard fertilisation)”
e6“Must and wine bacteriotas also showed significant (p < 0.05) changes in their predicted metabolic pathways”
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See all 53 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.