Taxonomic revision of Aspergillus section Clavati based on molecular, morphological and physiological data

János Varga, M. Due, J. C. Frisvad, R. A. Samson

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Aspergillus section Clavati has been revised using morphology, secondary metabolites, physiological characters and DNA sequences. Phylogenetic analysis of β-tubulin, ITS and calmodulin sequence data indicated that Aspergillus section Clavati includes 6 species, A. clavatus (synonyms: A. apicalis, A. pallidus), A. giganteus, A. rhizopodus, A. longivesica, Neocarpenteles acanthosporus and A. clavatonanicus. Neocarpenteles acanthosporus is the only known teleomorph of this section. The sister genera to Neocarpenteles are Neosartorya and Dichotomomyces based on sequence data. Species in Neosartorya and Neocarpenteles have anamorphs with green conidia and share the production of tryptoquivalins, while Dichotomomyces was found to be able to produce gliotoxin, which is also produced by some Neosartorya species, and tryptoquivalines and tryptoquivalones produced by members of both section Clavati and Fumigati. All species in section Clavati are alkalitolerant and acidotolerant and they all have clavate conidial heads. Many species are coprophilic and produce the effective antibiotic pay in. Members of section Clavati also produce antafumicin, tryptoquivalines, cytochalasins, sarcins, dehydrocarolic acid and kotanins (orlandin, desmethylkotanin and kotanin) in species specific combinations. Another species previously assigned to section Clavati, A. ingratus is considered a synonym of Hemicarpenteles paradoxus, which is phylogenetically very distantly related to Neocarpenteles and section Clavati.

Original languageEnglish
Pages (from-to)89-106
Number of pages18
JournalStudies in Mycology
Volume59
DOIs
Publication statusPublished - Jan 1 2007

Keywords

  • Ascomycetes
  • Aspergillus section Clavati
  • Calmodulin
  • Dichotomomyces
  • Eurotiales
  • Hemicarpenteles
  • ITS
  • Mycotoxin
  • Neocarpenteles
  • Patulin
  • Polyphasic taxonomy
  • β-Tubulin

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

Fingerprint Dive into the research topics of 'Taxonomic revision of Aspergillus section Clavati based on molecular, morphological and physiological data'. Together they form a unique fingerprint.

  • Cite this