The genus Rhodotorula includes basidiomycetous oleaginous yeast species. Rhodotorula
babjevae can produce compounds of biotechnological interest such as lipids, carotenoids, and biosurfactants from low value substrates such as lignocellulose hydrolysate. High-quality genome
assemblies are needed to develop genetic tools and to understand fungal evolution and genetics.
Here, we combined short- and long-read sequencing to resolve the genomes of two R. babjevae strains,
CBS 7808 (type strain) and DBVPG 8058, at chromosomal level. Both genomes are 21 Mbp in size
and have a GC content of 68.2%. Allele frequency analysis indicates that both strains are tetraploid.
The genomes consist of a maximum of 21 chromosomes with a size of 0.4 to 2.4 Mbp. In both assemblies, the mitochondrial genome was recovered in a single contig, that shared 97% pairwise identity.
Pairwise identity between most chromosomes ranges from 82 to 87%. We also found indications for
strain-specific extrachromosomal endogenous DNA. A total of 7591 and 7481 protein-coding genes
were annotated in CBS 7808 and DBVPG 8058, respectively. CBS 7808 accumulated a higher number
of tandem duplications than DBVPG 8058. We identified large translocation events between putative
chromosomes. Genome divergence values between the two strains indicate that they may belong to
different species.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:85948 |
| Date | 12 June 2023 |
| Creators | Martín-Hernández, Giselle C., Müller, Bettina, Brandt, Christian, Hölzer, Martin, Viehweger, Adrian, Passoth, Volkmar |
| Publisher | MDPI |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 323 |
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