Work

Rasamsonia, a new genus comprising thermotolerant and thermophilic Talaromyces and Geosmithia species

Year: 2011

Type: article

Abstract: The phylogenetic relationship among Geosmithia argillacea, Talaromyces emersonii, Talaromyces byssochlamydoides and other members of the Trichocomaceae was studied using partial RPB2 (RNA polymerase II gene, encoding the second largest protein subunit), Tsr1 (putative ribosome biogenesis protein) and Cct8 (putative chaperonin complex component TCP-1) gene sequences. The results showed that these species form a distinct clade within the Trichocomaceae and Trichocoma paradoxa is phylogenetically most closely related. Based on phenotypic and physiological characters and molecular data, we propose Rasamsonia gen. nov. to accommodate these species. This new genus is distinct from other genera of the Trichocomaceae in being thermotolerant or thermophilic and having conidiophores with distinctly rough walled stipes, olive-brown conidia and ascomata, if present, with a scanty covering. Species within the genus Rasamsonia were distinguished using a combination of phenotypic characters, extrolite patterns, ITS and partial calmodulin and β-tubulin sequences. Rasamsonia brevistipitata sp. nov. is described and five new combinations are proposed.

Source: Antonie van Leeuwenhoek

DOI: 10.1007/s10482-011-9647-1

Authors: J. Houbraken, H. Spierenburg, J. C. Frisvad

Institutions: Westerdijk Fungal Biodiversity Institute, Royal Netherlands Academy of Arts and Sciences, Technical University of Denmark

Language: English

Topic: Plant Pathogens and Fungal Diseases

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $3,690

OpenAlex ID: W2003555580