A5060831119- Fermentation and Sensory Analysis
- Probiotics and Fermented Foods
- Mycotoxins in Agriculture and Food
- Plant Pathogens and Fungal Diseases
- Polyamine Metabolism and Applications
- Horticultural and Viticultural Research
- Identification and Quantification in Food
- Fungal Biology and Applications
- Mycorrhizal Fungi and Plant Interactions
- Fungal and yeast genetics research
- Microbial Metabolism and Applications
- Amino Acid Enzymes and Metabolism
- Meat and Animal Product Quality
- Wheat and Barley Genetics and Pathology
- Yeasts and Rust Fungi Studies
- Microbial Inactivation Methods
- Protein Hydrolysis and Bioactive Peptides
- Plant Disease Resistance and Genetics
- Essential Oils and Antimicrobial Activity
- Plant and Fungal Interactions Research
- Microbial Community Ecology and Physiology
- Tea Polyphenols and Effects
- Environmental DNA in Biodiversity Studies
- Listeria monocytogenes in Food Safety
- Food Quality and Safety Studies
Laboratoire de Biodiversité et Biotechnologies Microbiennes
2015-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2022-2024
Université de Bretagne Occidentale
2015-2024
Brest State A.S. Pushkin University
2023
Délégation Normandie
2005-2010
Université de Caen Normandie
2005
Kombucha, historically an Asian tea-based fermented drink, has recently become trendy in Western countries. Producers claim it bears health-enhancing properties that may come from the tea or metabolites produced by its microbiome. Despite long history of production, microbial richness and dynamics have not been fully unraveled, especially at industrial scale. Moreover, impact type (green black) on ecology was studied. Here, we compared communities industrial-scale black green fermentations,...
Brettanomyces bruxellensis is a unicellular fungus of increasing industrial and scientific interest over the past 15 years. Previous studies revealed high genotypic diversity amongst B. strains as well strain-dependent phenotypic characteristics. Genomic assemblies that some harbour triploid genomes based upon prior genotyping it was inferred population widely dispersed across Australian wine regions. We performed an intraspecific survey 1488 isolates from 29 countries, 5 continents 9...
Domestication involves recent adaptation under strong human selection and rapid diversification therefore constitutes a good model for studies of these processes. We studied the domestication emblematic white mold Penicillium camemberti, used maturation soft cheeses, such as Camembert Brie, about which surprisingly little was known, despite its economic cultural importance. Whole-genome-based analyses genetic relationships diversity revealed that an ancient event led to emergence gray-green...
Abstract Domestication provides an excellent framework for studying adaptive divergence. Using population genomics and phenotypic assays, we reconstructed the domestication history of blue cheese mould Penicillium roqueforti. We showed that this fungus was domesticated twice independently. The used in Roquefort originated from old event associated with weak bottlenecks exhibited traits beneficial pre‐industrial production (slower growth greater spore on bread, traditional multiplication...
Aspergillus section Restricti together with sister (formerly Eurotium) comprises xerophilic species, that are able to grow on substrates low water activity and in extreme environments. We adressed the monophyly of both sections within subgenus applied a multidisciplinary approach for definition species boundaries sect. Restricti. The was tested set 102 isolates comprising all currently accepted strongly supported by Maximum likelihood (ML) Bayesian inferrence (BI) analysis based β-tubulin...
Abstract Domestication is an excellent case study for understanding adaptation and multiple fungal lineages have been domesticated fermenting food products. Studying domestication in fungi has thus both fundamental applied interest. Genomic studies revealed the existence of four populations within blue‐cheese‐making fungus Penicillium roqueforti . The two cheese show footprints domestication, but non‐cheese to their ecological niches (i.e., silage/spoiled lumber/spoiled food) not...
Bacterial genes of tyrosine decarboxylases were recently identified. Here we continued the sequencing decarboxylase locus Lactobacillus brevis IOEB 9809 and determined a total 7979 bp. The sequence contained four complete encoding tyrosyl-tRNA synthetase, decarboxylase, probable permease Na+/H+ antiporter. Rapid amplification cDNA ends (RACE) was employed to determine 5'-end mRNAs containing gene. It located only 34-35 nucleotides upstream start codon, suggesting that preceding synthetase...
The emblematic fungus Penicillium roqueforti is used throughout the world as a starter culture in production of blue-veined cheeses. Like other industrial filamentous fungi, P. was thought to lack sexual cycle. However, an ability induce recombination great economic and fundamental importance, it would make possible transform improve strains, promoting creation novel phenotypes eliminating deleterious mutations that accumulate during clonal propagation. We report here, for first time,...
Fungi exhibit substantial morphological and genetic diversity, often associated with cryptic species differing in ecological niches. Penicillium roqueforti is used as a starter culture for blue-veined cheeses, being responsible their flavor color, but also common spoilage organism various foods. Different types of cheeses are manufactured consumed worldwide, displaying specific organoleptic properties. These features may be due to the different manufacturing methods and/or P. strains used....
Oenococcus oeni is a lactic acid bacteria species encountered particularly in wine, where it achieves the malolactic fermentation. Molecular typing methods have previously revealed that made of several genetic groups strains, some being specific to certain types wines, ciders or regions. Here, we describe 36 recently released O. genomes and phylogenomic analysis these plus 14 reported genomes. We also report three genome sequences sister kitaharae were used for reconstructions. Phylogenomic...