Write about sexual reproduction in fungi.

Explanation

Sexual reproduction in fungi includes 3 steps
1. Fusion of two protoplasts (plasmogamy) 2. Fusion of nuclei (karyogamy) and 3. Production of haploid spores through meiosis.
1. Planogametic copulation : Fusion of motile gamete is called planogametic copulation.
a. Isogamy - Fusion of morphologically and physiologically similar gametes.
Eg : Synchytrium.
b. Anisogamy - Fusion of morphologically or physiologically dissimilar gametes.
Eg : Allomyces.
c. Oogamy- Fusion ofboth morphologically and physiologically dissimilar gametes.
Eg. Monoblepharis.

2. Gametangial contact During sexual reproduction a contact is established between antheridium and Oogonium. Eg : Albugo.
3. Gametangial copulation : Fusion of gametangia to form zygospore. Eg: Mucor, Rhizopus.
4. Spermatization : In this method a uninucleate pycniospore/microconidium is transferred to receptive hyphal cell. Eg: Puccinia/Neurospora.
5. Somatogamy : Fusion of two somatic cells of tpe hyphae Eg : Agaricus.