title: Population structure of Serpula lacrymans in Europe with an outlook to the French population.
abstract: In this study the genetic variation and population structure in a French population of the dry rot fungus S. lacrymans was investigated using 14 microsatellites markers and compared to the rest of Europe. In that comparison the French population possessed the same allelic diversity as rest of Europe. A weak geographic structuring of the genetic variation was observed across Europe, where the French isolates to some extent separated from the rest of Europe, indicating that weak barriers to gene flow exists. Eighty percent of the isolates had unique multilocus microsatellite genotypes, which corresponds to high recombination and dispersal by sexual spores. Deviations from Hardy-Weinberg expectations were observed in multiple loci. In most loci there was an excess of heterozygotes, which could be due to either non-random mating, presence of more than two nuclei in the secondary mycelia or another unrecognized process. A total of six vegetative compatibility (VC) groups were present in Europe, out of which four were sampled in France. One VC group was over-represented in France while two others were underrepresented, as compared to the rest of Europe.
authors.affiliation: Université de Brest, UEB, EA3882 Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, IFR148 ScInBioS, ESMISAB, Technopôle de Brest Iroise, 29280 Plouzané, France, and Microbial Evolution Research Group (MERG), Department of Biosciences, University of Oslo, PO Box 1066 Blindern, N-0316 Oslo, Norway sundymaurice@gmail.com.
authors.forename: Sundy
authors.initials: S
authors.lastname: Maurice
authors.affiliation: Microbial Evolution Research Group (MERG), Department of Biosciences, University of Oslo, PO Box 1066 Blindern, N-0316 Oslo, Norway.
authors.forename: Inger
authors.initials: I
authors.lastname: Skrede
authors.affiliation: Université de Brest, UEB, EA3882 Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, IFR148 ScInBioS, ESMISAB, Technopôle de Brest Iroise, 29280 Plouzané, France.
authors.forename: Gaetan
authors.initials: G
authors.lastname: LeFloch
authors.affiliation: Université de Brest, UEB, EA3882 Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, IFR148 ScInBioS, ESMISAB, Technopôle de Brest Iroise, 29280 Plouzané, France.
authors.forename: Georges
authors.initials: G
authors.lastname: Barbier
authors.affiliation: Microbial Evolution Research Group (MERG), Department of Biosciences, University of Oslo, PO Box 1066 Blindern, N-0316 Oslo, Norway.
authors.forename: Håvard
authors.initials: H
authors.lastname: Kauserud
mesh_terms: D000483:Alleles; D001487:Basidiomycota / Q000235:genetics* / Q000302:isolation & purification; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D005060:Europe; D005602:France; D014644:Genetic Variation; D005828:Genetics, Population; D005838:Genotype; D006579:Heterozygote; D018895:Microsatellite Repeats / Q000235:genetics*; D058885:Multilocus Sequence Typing; D016533:Mycological Typing Techniques
chemical_list: D004271:DNA, Fungal
keywords: Serpulaceae; dry rot fungi; heterozygosity excess; population genetics; vegetative compatibility