Genomic evidence for intraspecific hybridization in a clonal and extremely halotolerant yeast.

ABSTRACT:

Background

The black yeast Hortaea werneckii (Dothideomycetes, Ascomycota) is one of the most extremely halotolerant fungi, capable of growth at NaCl concentrations close to saturation. Although dothideomycetous fungi are typically haploid, the reference H. werneckii strain has a diploid genome consisting of two subgenomes with a high level of heterozygosity.

Results

In order to explain the origin of the H. werneckii diploid genome we here report the genome sequencing of eleven strains isolated from different habitats and geographic locations. Comparison of nine diploid and two haploid strains showed that the reference genome was likely formed by hybridization between two haploids and not by endoreduplication as suggested previously. Results also support additional hybridiza

SUBMITTER: Gostincar C 

PROVIDER: S-EPMC5952469 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature