Polyphasic taxonomy of Aspergillus section Sparsi

János Varga, Jens C. Frisvad, Robert A. Samson

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Aspergillus section Sparsi includes species which have large globose conidial heads with colours ranging from light grey to olive-buff. In this study, we examined isolates of species tentatively assigned to section Sparsi using a polyphasic approach. The characters examined include sequence analysis of partial b-tubulin, calmodulin and ITS sequences of the isolates, morphological and physiological tests, and examination of the extrolite profiles. Our data indicate that the revised section Sparsi includes 10 species: A. anthodesmis, A. biplanus, A. conjunctus, A. diversus, A. funiculosus, A. implicatus, A. panamensis, A. quitensis, A. sparsus, and the new taxon A. haitiensis. The recently described A. quitensis and A. ecuadorensis are synonyms of A. amazonicus based on both molecular and physiological data. The white-spored species A. implicatus has also been found to belong to this section. Aspergillus haitiensis sp. nov. is characterised by whitish colonies becoming reddish brown due to the production of conidial heads, and dark coloured smooth stipes. The taxon produces gregatins, siderin and several unknown but characteristic metabolites.

Original languageEnglish
Pages (from-to)187-195
Number of pages9
JournalIMA Fungus
Volume1
Issue number2
DOIs
Publication statusPublished - Dec 1 2010

Keywords

  • Aspergillus section Sparsi
  • B-tubulin
  • Calmodulin
  • Eurotiales
  • Extrolites
  • ITS
  • Polyphasic taxonomy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agricultural and Biological Sciences (miscellaneous)

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