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Updated: May 21, 2026

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure

Published on: May 27, 2022

Polyphasic taxonomy of Aspergillus section Sparsi.

János Varga¹, Jens C Frisvad, Robert A Samson

¹CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, NL-3584 CT Utrecht, The Netherlands.

|June 9, 2012

Summary

This summary is machine-generated.

This study revises Aspergillus section Sparsi, identifying 10 species including the new Aspergillus haitiensis. Molecular, morphological, and chemical data clarify species relationships and synonymies within this fungal group.

Keywords:

Aspergillus section Sparsi Eurotiales ITS calmodulin extrolites polyphasic taxonomy β-tubulin

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Area of Science:

Mycology
Fungal Taxonomy
Molecular Biology

Background:

Aspergillus section Sparsi is characterized by large, globose conidial heads.
Previous classifications required detailed examination using modern techniques.

Purpose of the Study:

To revise and clarify the taxonomic status of species within Aspergillus section Sparsi.
To describe a new species and resolve existing taxonomic uncertainties.

Main Methods:

Polyphasic approach combining molecular (β-tubulin, calmodulin, ITS sequencing), morphological, physiological, and extrolite profile analyses.
Comparative analysis of isolate characteristics.

Main Results:

The revised section Sparsi comprises 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.
A. quitensis and A. ecuadorensis are identified as synonyms of A. amazonicus.
A. implicatus, a white-spored species, is confirmed to belong to this section.
Aspergillus haitiensis sp. nov. is described with distinct characteristics including colony color change, stipe morphology, and unique metabolite production (gregatins, siderin).

Conclusions:

The polyphasic approach successfully resolved taxonomic ambiguities within Aspergillus section Sparsi.
The revised classification provides a more accurate understanding of species diversity and relationships.
The description of Aspergillus haitiensis expands the known diversity of this fungal section.