Home • Erythrobasidium hasegawianum ATCC 9536 v1.0
Erythrobasidium hasegawianum
Erythrobasidium hasegawianum
Image Credit: M. Catherine Aime

Erythrobasidium hasegawianum Hamam., Sugiy. & Komag is a reddish-pink pigmented Pucciniomycotina (Basidiomycota) yeast species that was isolated from an old beer yeast culture in Pennsylvania, USA. ATCC 9536 is the type and only known strain of this species; E. hasegawianum is the only accepted species in the genus. Erythrobasidium hasegawianum is one of the few Pucciniomycotina yeast species for which the full life cycle has been described. Under certain nutritional conditions E. hasegawianum switches from the yeast state to a hyphal state; mating is not involved. Hyphae may be either dikaryotic with clamp connections or mononucleate without clamps. Holobasidia are formed directly from the hyphae that produce haploid gasteroid basidiospores.  Basidiospores reproduce by budding thereby giving rise to the yeast state.  
This fungus was originally placed in Agaricomycotina, but through ultrastructural and molecular phylogenetic studies it is now known that, despite the production of holobasidia, E. hasegawianum is related to the other simple-septate fungi in Pucciniomycotina, specifically in Cystobasidiomycetes (Erythrobasidiales, Erythrobasidiaceae). Genomic data produced for this project will represent the first available for a member of this class.  Researchers will use these data in phylogenetic and phylogenomic reconstructions and in comparative genomics studies that seek to elucidate the molecular bases governing spore dispersal and basidium formation, the production of yeast states, and the evolution of pathogenicity in Pucciniomycotina.

If you would like to use this genome in your research, please contact Dr. M. Catherine Aime ([email protected]) and Dr. Igor Grigoriev ([email protected]) for permission.