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Korea Biodiversity Information System > Fungi/Lichen Resource > Fungi Classes > Fungi Structure
The bodies that form hyphae grow through mitosis, and their role is to absorb nutrients and form the body structure.
The reproductive organs are largely classified into sexually reproductive and asexually reproductive spore-producing organs.
The asexually reproductive spore-producing organ generates spores with the same method as mitosis.
The sexually reproductive spore-producing organ generates spores through meiosis.
Each spore has a different shape, and the sporocysts that wrap spores and sporophores supporting spores also have different shapes.
This is used as an important key in distinguishing fungi.
Mushrooms, a representative fungus, have the following structure.
Their fruit bodies are largely divided into pileus, gills and stem, and form spores on their gill surfaces that are distributed for reproduction.
Most Agaricales are epigeous. Young mushrooms are shaped like an egg and wrapped by a universal veil, and when the mushroom grows and the stem is longer, the universal veil is destroyed and its fragments are left as scales on the surface of the pileus or volva on the proximal stem.
In addition, when the pileus unfolds the calyptra is also destroyed and is likely to leave fragments on the edge of the pileus or attached as loops on the upper stem.
The spore-forming layer is called the hymenium, which develops to produce as many spores as possible.
In the case of Agaricales, it has typically wrinkled shape.
However, most Aphyllophorales are wood-rotting fungi and have no stems, or short ones. They mostly grow attached to trees and are shaped like a shell or horseshoe.
The hymenium may be tube shaped, like Polyporus squamosus, needle shaped like Hydnum repandum, ridge shaped like Cantharellus cibarius, or flat like Corticum.
