Ascomycota


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Related to Ascomycota: Basidiomycota, Deuteromycota

Ascomycota,

a phylum of the kingdom FungiFungi
, kingdom of heterotrophic single-celled, multinucleated, or multicellular organisms, including yeasts, molds, and mushrooms. The organisms live as parasites, symbionts, or saprobes (see saprophyte).
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Ascomycota

A phylum in the kingdom Fungi, representing the largest of the major groups of fungi, and distinguished by the presence of the ascus, a specialized saclike cell in which fusion of nuclei and reduction division occur and the resulting nuclei form ascospores. In most ascomycetes, each ascus contains eight ascospores, but the number may vary from one to several hundred. In the simplest ascomycetes (yeasts), the vegetative body (thallus) is unicellular; however, in the majority of ascomycetes, the thallus is more complex and consists of a tubular, threadlike hypha with cross walls which grows in or on the substrate. These hyphae eventually form structures called ascomata (ascocarps), on or in which the asci are formed. In addition to their sexual reproduction, most ascomycetes reproduce asexually by means of conidia.

Traditionally, the structure of the ascoma and ascus has served as the basis for subdividing the Ascomycota into five classes: Hemiascomycetes, Plectomycetes, Pyrenomycetes, Discomycetes, Loculoascomycetes. The introduction of molecular data, however, is changing concepts of the relationships of different groups of ascomycetes and will eventually lead to a much-revised classification scheme.

The ascomycetes occur throughout the world in all types of habitats and on both living and dead substrates. An estimated 33,000 species are arranged in about 3300 genera, with new species being described regularly. Ecologically ascomycetes function as primary decomposers of plant materials, but they also are important as plant and human pathogens; in baking, brewing, and winemaking; in enzyme and acid production; and as sources of antibiotics and other drugs. See Eumycota, Fungi, Plant pathology, Yeast

References in periodicals archive ?
Los estudios cientificos en el ambito de la micologia de la provincia de Salamanca son escasos y dentro de ellos solo se encuentran algunas referencias aisladas referidas al grupo de los hongos de la division Ascomycota, en los cuales se recogen un total de 57 especies (HERNANDEZ MELCHOR & VELASCO SANTOS, Bol.
Laccase enzyme production has been reported from soil Ascomycota species (Levasseur et al.
Polyphyly of the genus Canoparmelia-uncovering incongruences between phenotype-based classification and molecular phylogeny within lichenized Ascomycota (Parmeliaceae).
which belong to Ascomycota (Pyronemataceae, Pezizales).
harzianum is most frequently saprobic soil inhabitant belongs to ascomycota.
Diversidad de Anamorfos de Ascomycota en bosques nativos de Celtis tala (Ulmaceae) en la Provincia de Buenos Aires, Argentina.
The Ascomycota is the largest phylum in the Kingdom Fungi, with approximately 32,000 species (Hawksworth et al.
Upon examination under the light microscopic, the macroscopic and microscopics characters of the fungus that grew in moist chamber were identified two classes, teen (10) genera and seventeen (17) species, of the Plectomycetes and Discomycetes classes, Division Ascomycota such as: Ascobolus furfuraceus, A.
Hyphomicetous asexual species of Ascomycota (108 species) dominated, while Coelomycetous species represented 21% of the isolates (38 species).
Ascomycota, Basidiomycota, Deuteromycota and Oomycota.