subdivision Ascomycotina
Proper noun A major taxonomic subdivision within the fungi kingdom Eumycota, characterized by the production of sexual spores (ascospores) in a sac-like structure called an ascus. This group includes classes such as Hemiascomycetes, Plectomycetes, Pyrenomycetes, and Discomycetes. Commonly known as sac fungi.
This term is used in scientific contexts, specifically in mycology (the study of fungi) and biological taxonomy, to classify a large group of fungi. * The subdivision Ascomycotina contains many economically important fungi, such as yeasts and morels. * When studying fungal phylogeny, researchers often examine characteristics specific to the subdivision Ascomycotina.
- In some modern taxonomic systems, this group is elevated to the rank of a phylum, called Ascomycota.
- The defining feature of this subdivision is the ascus, the microscopic cell where karyogamy and meiosis occur to produce ascospores.
- Ascomycota (n): The phylum name often used synonymously with Ascomycotina in contemporary classification.
- Ascomycete (n): Any member of the Ascomycotina/Ascomycota.
- Ascus (n): The sac-like structure that defines this group.
- Ascomycota
- Sac fungi
This term has a single, specific meaning in biological taxonomy. It does not have common idiomatic or figurative uses. The word "subdivision" here is used in its taxonomic sense, not its general meaning of dividing land or a larger entity into smaller parts.
- 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