Ascus definition

ăskəs
Frequency:
In ascomycetous fungi, a sac in which spores (usually eight) are produced and meiosis occurs.
noun
0
0
A membranous, often club-shaped structure inside which ascospores are formed through sexual reproduction in species of the fungi known as ascomycetes. The ascus is unique to ascomycetes and distinguishes them from other kinds of fungi. Asci are formed when two hyphae that are sexually compatible conjugate. Each ascus typically develops eight ascospores. Asci swell at maturity until they burst, shooting the ascospores into the air.
0
0
A sac-shaped cell present in ascomycete fungi; it is a reproductive cell in which meiosis and an additional cell division produce eight spores.
noun
0
0
A membranous, often club-shaped structure in ascomycetes in which karyogamy occurs, followed by the formation of eight haploid ascospores.
noun
0
1
Advertisement

Other Word Forms

Noun

Singular:
ascus
Plural:
asci

Origin of ascus

  • New Latin from Greek askos bag

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek ἀσκός (askos, “a sac”).

    From Wiktionary