Macrowine 2021
IVES 9 IVES Conference Series 9 Bacterial community in different wine appellations – biotic and abiotic interaction in grape berry and its impact on Botrytis cinerea development

Bacterial community in different wine appellations – biotic and abiotic interaction in grape berry and its impact on Botrytis cinerea development

Abstract

An in-depth knowledge on the conditions that trigger Botrytis disease and the microbial community associated with the susceptibility/resistance to it could led to the anticipation and response to the Botrytis emergence and severity. Therefore, the present study pretends to establish links between biotic and abiotic factors and the presence/abundance of B. cinerea. Several grape varieties from 4 different wine appellations in France and Spain have been studied at different maturity stages to analyse: 1) B. cinerea abundance (established by qPCR), 2) grape composition parameters (comprising water activity measuring, exudates composition, phenologic stage, gluconic acid, calcium, etc), and 3) grape berries microbial community diversity and composition (using 16S rRNA and ITS amplicon sequencing).Preliminary analysis of the results obtained through 16S rRNA Next Generation Sequencing revealed differences in microbial richness and bacterial composition between the vineyards. Both alpha and beta diversities correlated with fruit maturity, where grapes at harvest stage showed significantly higher richness and a dissimilar bacterial composition. In addition, bacterial community structure differed between wine appellations. The study will increase significantly our understanding of the ecology of microbial associated to different grape varieties and viticulture areas. Additionally, it will generate knowledge about the factors.

DOI:

Publication date: September 3, 2021

Issue: Macrowine 2021

Type: Article

Authors

Guilherme Martins 1,2, Pauline Mazeau 1, Audrey Barsacq 1, Laurence Geny 1, Isabelle Masneuf-Pomarède 1,2 , Miren Andone Recalde 3, Iratxe Zarraonaindia 3

1 Université de Bordeaux, Isvv, Unité de Recherche Oenologie Ea 4577, Usc 1366 Inrae, Bordeaux Inp, 33140 Villenave D’Ornon, France.
2 Bordeaux Sciences Agro, 33170 Gradignan Cedex, France.
3 Department of Genetics, Physical, Anthropology & Animal Physiology, Faculty of Science And Technology, University of The Basque Country (Upv/Ehu), Leioa, Spain.
4 Ikerbasque, Basque Foundation For Science, Bilbao, Spain.

Contact the author

Keywords

microbial community, botrytis cinerea,  grape composition parameters, next generation sequencing

Citation

Related articles…

Caracterización sensorial preliminar de los vinos tintos de la Isla de Tenerife (Islas Canarias, España)

En la isla de Tenerife (Islas Canarias, Espafia) existen cinco Denominaciones de Origen (D.O.) con una superficie inscrita aproximada de 5.000 hectareas. Actualmente existen 94 bodegas

Read More

Investigation of VvDXS function and its effects on muscat flavor levels

In the present study the connection between the positional candidate gene VvDXS and muscat flavor was evaluated by investigating the expression profiles in the berries from a Muscat-type cultivar and a neutral cultivar and its nucleotide diversity of full ORF on grapevine accessions.

Read More

Terroir valorization strategies in a reformed denomination area: the Prosecco case study

Aims: This work summarizes some of the upmost recent studies and valorization strategies concerning the Prosecco wine production area. After the geographical denomination Prosecco (DO) was strongly reformed in 2009, the newborn DOCG (controlled and guaranteed DO) and DOC (controlled DO) areas have required different and specific strategies to promote and protect the value of their production.

Read More

Impact of press fractioning on current and phenolic compositions of Pinot noir and Pinot meunier wines

In the Champagne’s region, a complete press cycle is a series of pressure increases (squeezes) and decreases (returns). After alcoholic fermentation, the two wines (the “cuvee” and the “tailles”) obtained from grape juice fractions exhibit strong differences for numerous characteristics. Nevertheless, there is no study of the impact of the press cycle, followed after each pressure increase (22-28 steps), on wine colour, current analyses and phenolic composition. So, the aim of this study (vintage 2020) was to investigate the composition changes of Pinot noir and Pinot meunier wines, produced from 22-28 grape juices isolated for each complete pressing cycle.

Read More

Characterization of the DOC wine “Colli Piacentini Gutturnio” obtained in three traditional areas

The poster presents the results of the 3rd year of activity of the project “Characterization of the wine productions of the italian regions. The DOC wine Colli Piacentini Gutturnio”.

Read More