Definition

Noun 1. A major taxonomic subdivision of fungi: Ascomycotina is a large subdivision (or phylum, in some classification systems) of the kingdom Fungi. It is characterized by the production of sexual spores (ascospores) within a sac-like structure called an ascus. 2. Sac fungi: This group is commonly referred to as the sac fungi due to the defining ascus structure.

Usage Examples

• Noun:
  • Yeasts, morels, and truffles all belong to the Ascomycotina.
  • The study focused on the evolutionary relationships within the Ascomycotina.
  • Many plant pathogens are classified under Ascomycotina.

Advanced Usage

• Taxonomic Context: In modern mycological taxonomy, "Ascomycota" is the more frequently used term for this phylum, with "Ascomycotina" sometimes used to denote a subphylum rank. The term is primarily used in scientific and academic writing.
  • The phylogenetic analysis supported the monophyly of the Ascomycotina.

Variants and Related Words

• Ascomycota (n): The phylum name, often used synonymously with Ascomycotina in modern classifications.
• Ascomycete (n): Any individual fungus belonging to the Ascomycotina/Ascomycota.
  • Penicillium is a well-known ascomycete.
• Ascus (n): The microscopic, sac-like cell in which ascospores are formed.
• Ascospore (n): The sexual spore produced inside an ascus.

Synonyms

• Sac fungi
• Ascomycota (in many classification systems)

Related Terms & Concepts

• Eumycota: A former taxonomic group for "true fungi," within which Ascomycotina was classified.
• Hemiascomycetes, Plectomycetes, Pyrenomycetes, Discomycetes: Former classes or groups within the Ascomycotina, often based on fruiting body morphology (e.g., Discomycetes are cup fungi). Modern classification relies more on molecular phylogenetics.

Noun

1. a large subdivision of Eumycota including Hemiascomycetes and Plectomycetes and Pyrenomycetes and Discomycetes; sac fungi; in some classification systems considered a division of the kingdom Fungi