Ascomycetes and Basidiomycetes produce characteristic spores after the
processes of plasmogamy, karyogamy, and meiosis. Heterothallism, which requires two
mating types, is more common than homothallism; therefore, zygospores, ascospores, and basidiospores are not commonly seen in the clinical laboratory because only one mating type is usually recovered.Ascomycetes are characterized by the development of sac-like cells called asci, which usually contain eight ascospores. Asci may form in a specialized fruiting body called an ascocarp. The development of the centrum is very important in distinguishing ascocarp types.Casein agar
casein, 10% acid hydrolyzed 25.0 ml
glucose 40.0 gm
Mg S04 0.1 gm
KH2
PO4 1.8 gm
agar 20.0 gm
distilled H O q.s. 1000 ml 2
adjust to pH 6.8
Ammonium nitrate agar can be used- Same as casein agar except substitute 1.5 gm NH N0 for 4 3 casein, 10% acid hydrolzyed