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Generic hyper-diversity in Stachybotriaceae.

L Lombard1, J Houbraken1, C Decock2

  • 1CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands;

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Summary
This summary is machine-generated.

Taxonomic revision of Stachybotriaceae fungi, using multi-locus phylogenetic analyses, resolved 33 genera. This study clarifies generic boundaries and introduces 21 new or resurrected genera, improving fungal classification.

Keywords:
biodegradersgeneric concepthuman and plant pathogensindoor mycobiotamulti-gene phylogenyspecies concepttaxonomy

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Area of Science:

  • Fungal Taxonomy and Phylogenetics
  • Molecular Biology
  • Mycology

Background:

  • The Stachybotriaceae family, encompassing plant and human pathogens and industrial biocontro agents, has poorly defined generic boundaries.
  • Limited availability of type material and sequence data hinders taxonomic studies within this family.

Purpose of the Study:

  • To clarify the generic boundaries within the Stachybotriaceae family.
  • To provide a robust phylogenetic framework for the classification of Stachybotriaceae.

Main Methods:

  • Multi-locus phylogenetic analyses were conducted using partial gene sequences: 28S large subunit (LSU), internal transcribed spacer regions (ITS), RNA polymerase II second largest subunit (rpb2), calmodulin (cmdA), translation elongation factor 1-alpha (tef1), and β-tubulin (tub2).
  • Analyses included all available type and authentic strains.
  • Morphological characters were integrated with phylogenetic data.

Main Results:

  • Phylogenetic analyses resolved 33 genera within Stachybotriaceae, including nine established genera.
  • The genera Melanopsamma, Memnoniella, and Virgatospora were resurrected.
  • Myrothecium and Stachybotrys were found to be polyphyletic, leading to the introduction of 13 new myrothecium-like and eight new stachybotrys-like genera.

Conclusions:

  • This study significantly enhances the taxonomic framework of the Stachybotriaceae family.
  • The resolution of 33 distinct genera, including newly introduced and resurrected taxa, provides a more accurate classification of these fungi.
  • The findings are crucial for understanding the evolutionary relationships and ecological roles of Stachybotriaceae members.