Related Experiment Video
Updated: Jun 3, 2026

Isolation of Soil Microorganisms Using iChip Technology
Published on: January 10, 2025
Minutisphaera and Natipusilla: two new genera of freshwater Dothideomycetes
Astrid Ferrer1, Andrew N Miller, Carol A Shearer
1Department of Plant Biology, University of Illinois, Room 265 Morrill Hall, 505 South Goodwin Avenue, Urbana, Illinois 61801, USA. aferrer@life.uiuc.edu
Abstract:
Two new genera are established in the Dothideomycetes based on morphological and molecular data (SSU and LSU nuclear ribosomal sequences) to accommodate four ascomycete species collected from woody debris submerged in freshwater habitats. The genus Minutisphaera is represented by a single species, M. fimbriatispora, which was collected from freshwater habitats in temperate forests in North America. It has small, superficial, brown, subglobose, papillate pseudothecia with dark, irregularly twisted hairs around the papillae, fissitunicate asci, septate pseudoparaphyses, and hyaline, one-septate ascospores surrounded by a gelatinous sheath and having spine-like appendages radiating around the ascospore at the septum. Minutisphaera formed a strongly supported clade with Farlowiella carmichaeliana. The second genus, Natipusilla, contains three new species, N. decorospora, N. limonensis and N. naponensis, which were collected from Central and South America. Natipusilla is characterized by small, superficial, light-colored, globose pseudothecia, fissitunicate asci, few or no pseudoparaphyses, and hyaline, one-septate to tardily two- or three-septate ascospores with or without a gelatinous sheath. The three Natipusilla species form a well supported clade, but their relationship to other members of the Dothideomycetes remains unclear.
More Related Videos
14:38Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
Published on: April 20, 2012
10:23A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
Published on: July 11, 2025
Related Concept Videos
Diversity of Archaea II
Diversity of Protists III
Bacterial Phylum Tenericutes
Fungal Phylum Microsporidia
Bacterial Phylum Planctomycetes
Bacterial Phylum Spirochaetes