Impact of the Acquired Subgenome on the Transcriptional Landscape in Brettanomyces Bruxellensis Allopolyploids

Overview

Journal G3 (Bethesda)

Publisher Oxford University Press

Specialties Genetics
Molecular Biology

Date 2023 May 24

PMID 37226280

Authors

Arthur Jallet

Anne Friedrich

Joseph Schacherer

Affiliations

Soon will be listed here.

Abstract

Gene expression variation can provide an overview of the changes in regulatory networks that underlie phenotypic diversity. Certain evolutionary trajectories such as polyploidization events can have an impact on the transcriptional landscape. Interestingly, the evolution of the yeast species Brettanomyces bruxellensis has been punctuated by diverse allopolyploidization events leading to the coexistence of a primary diploid genome associated with various haploid acquired genomes. To assess the impact of these events on gene expression, we generated and compared the transcriptomes of a set of 87 B. bruxellensis isolates, selected as being representative of the genomic diversity of this species. Our analysis revealed that acquired subgenomes strongly impact the transcriptional patterns and allow discrimination of allopolyploid populations. In addition, clear transcriptional signatures related to specific populations have been revealed. The transcriptional variations observed are related to some specific biological processes such as transmembrane transport and amino acids metabolism. Moreover, we also found that the acquired subgenome causes the overexpression of some genes involved in the production of flavor-impacting secondary metabolites, especially in isolates of the beer population.

Citing Articles

Subpopulation-specific gene expression in uncovers distinct metabolic adaptations to wine fermentation.

Vicente J, Benito S, Marquina D, Santos A Curr Res Food Sci. 2025; 10:100954.

PMID: 39760014 PMC: 11699796. DOI: 10.1016/j.crfs.2024.100954.

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