Molecular Genetic Analysis with Microsatellite-like Loci Reveals Specific Dairy-Associated and Environmental Populations of the Yeast Geotrichum candidum

is an environmental yeast, also found as part of the cheese surface microbiota, where it is important in the ripening of many traditional cheeses, such as Camembert. We have previously developed a Multi Locus Sequence Typing (MLST) scheme, which differentiated five clades, of which one contained onl...

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Published inMicroorganisms (Basel) Vol. 10; no. 1; p. 103
Main Authors Tinsley, Colin R, Jacques, Noémie, Lucas, Marine, Grondin, Cécile, Legras, Jean-Luc, Casaregola, Serge
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 01.01.2022
MDPI
Subjects
adaptation
Cheese
dairy
Dairy products
environment
Food engineering
Genetic analysis
Genetics
Genomes
Genotypes
Geotrichum candidum
Geotrichum candidum
Life Sciences
Loci
Microbiology and Parasitology
Microbiota
Mycology
Phylogenetics
Phylogeny
Population structure
Ripening
Strains (organisms)
Yeast
Yeasts
United Kingdom > UK
France
adaptation
environment
Geotrichum candidum
dairy
Geotrichum candidum
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Summary:is an environmental yeast, also found as part of the cheese surface microbiota, where it is important in the ripening of many traditional cheeses, such as Camembert. We have previously developed a Multi Locus Sequence Typing (MLST) scheme, which differentiated five clades, of which one contained only environmental isolates, two were composed almost entirely of dairy isolates, and two others contained a mixture of dairy, environmental, and miscellaneous food isolates. In order to provide a simple method to uniquely type strains, and in addition to permit investigation of the population structure at a fine level, we describe here a molecular analysis using a set of twelve highly discriminating microsatellite-like markers. The present study consolidates the previously suggested division between dairy and environmental strains, and in addition distinguishes a specifically European group of environmental strains. This analysis permitted the discrimination of 72 genotypes from the collection of 80 isolates, while retaining the underlying meaningful phylogenetic relation between groups of strains.
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Current address: Microflora, Institut des Sciences de la Vigne et du Vin, 210 Chemin de Leysotte, CEDEX CS50008, 33882 Villenave d’Ornon, France.
Current address: Université Paris-Saclay, INRAE, UR BIOGER, 78850 Thiverval-Grignon, France.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms10010103