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What is Ascus in Microbiology? PDF | Download eBooks

Learn Ascus definition in microbiology with explanation to study “What is Ascus”. Study ascus explanation with microbiology terms to review microbiology course for online degree programs.

Ascus Definitions

  1. A specialized cell, characteristic of the ascomycetes, in which two haploid nuclei fuse to produce a zygote, which often immediately divides by meiosis; at maturity, an ascus contains ascospores.

    Prescott's Microbiology 9th Edition by Joanne Willey, Linda Sherwood, Christopher J. Woolverton



  2. A sac-like structure possessed by members of the Ascomycota that contains the ascospores.

    Essential Microbiology by Stuart Hogg



  3. Special fungal sac in which haploid spores are created.

    Foundations in Microbiology by Kathleen Park Talaro, Arthur Talaro



Ascus Explanation

Asci are the sexual spore-bearing cells, which are made in ascomycete fungi. Usually eight ascospores are contained in asci, these spores are produced in the process of meiosis, and later they undergo the mitotic cell division. Nonetheless, asci of some species or belonging to some genera appear in numbers of 1, 2, 4 or multiples of 4.

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