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Redefining Microascus, Scopulariopsis and allied genera.

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  • 1Unitat de Micologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain;

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Summary
This summary is machine-generated.

This study clarifies fungal taxonomy for Microascus and Scopulariopsis using molecular and morphological data. It redefines genera, describes new species, and provides identification keys for these soil and indoor fungi.

Keywords:
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Area of Science:

  • Mycology and Fungal Taxonomy
  • Molecular Phylogenetics
  • Environmental Microbiology

Background:

  • The genera Microascus and Scopulariopsis include species found in soil, decaying matter, and indoor environments.
  • Some species are opportunistic pathogens affecting insects, animals, and humans.
  • Previous taxonomy relied solely on morphology, leading to potential inaccuracies.

Purpose of the Study:

  • To clarify the taxonomy and phylogeny of Microascus and Scopulariopsis species.
  • To delineate species using integrated morphological, physiological, and molecular analyses.
  • To provide a robust classification framework for these commonly encountered fungi.

Main Methods:

  • Studied a large collection of clinical and environmental isolates, including ex-type strains.
  • Employed morphological, physiological, and molecular analyses.
  • Utilized Genealogical Phylogenetic Species Recognition (GCPSR) with DNA sequence data from four loci (ITS, rDNA LSU, translation elongation factor 1-α, β-tubulin).

Main Results:

  • Established that Microascus and Scopulariopsis represent two distinct phylogenetic lineages.
  • Reinstated the genus Pithoascus and erected the new genus Pseudoscopulariopsis.
  • Described seven new species of Microascus and one new Scopulariopsis species, with further taxonomic revisions including new combinations and neotypifications.

Conclusions:

  • The study provides a revised and phylogenetically supported classification for Microascus and Scopulariopsis.
  • New genera and species are introduced, enhancing the accuracy of fungal identification.
  • The findings contribute to a better understanding of the diversity and evolutionary relationships within these fungal groups.