Fertilization methods in fungi vary as in none of other groups of organisms. And every major taxonomic group of fungi has its own features of the fer

Fertilization in fungi

Fertilization methods in fungi vary as in none of other groups of organisms. And every major taxonomic group of fungi has its own features of the fertilization. It may be copulation of small gametes, and the merger of entire sex organs and even of mycelia (in fact, of whole organisms). Here is illustrated the sexual process in the most highly organized fungi — basidiomycetes, which include most pileate fungi or mushrooms (diagram 85). At the beginning from spores develop haploid short-living “+” and “-“ mycelia. Then the “opposite” mycelia merge with each other to form a long-living diploid mycelium. From it form fruiting bodies, which again produce spores. At the same nuclei in diploid mycelia do not merge, but simply approach each other.

Diagram 85. The way of fertilization in the life cycle of pileate fungi: 1 — maturation of the spore; 2 — release of spores; 3 — short-living merger of two haploid mycelia into the diploid whose cells consist of two nuclei; 4 — diploid mycelium; 5 — young fruiting body; 6 — mature fruiting body
Categories:
Questions:
  • In the process of fungi copulation from two single-nuclei haploid cells form dual-nuclei diploid. Can this process be called fertilization?