Question

What are the four types of sexual reproduction observed in Ascomycota?

Answer 1

Sexual reproduction in Ascomycota occurs by

1. Gametangial copulation. The male and female gametangia come in close contact and fuse together. They lose their individual identity. It is of two types i.e. isogametangial and anisogametangial copulation. Example- Yeast

2. Gametangial contact. The male and female gametangia come in close contact but never get fused. Example- Penicillium, Saprolegnia

3. Spermatization. The male gamete called spermatia fuses with female hyphae or trichogyne which leads to plasmogamy. Example- Neurospora

4. Somatogamy. The male and female nuclei are fused by vegetative fusion of hyphae of opposite sexes. Example- Morchella