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Mushroom stem cells
Author(s) -
Money Nicholas P.
Publication year - 2002
Publication title -
bioessays
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.175
H-Index - 184
eISSN - 1521-1878
pISSN - 0265-9247
DOI - 10.1002/bies.10160
Subject(s) - totipotent , biology , hypha , primordium , stipe (mycology) , mushroom , meristem , spore , sporogenesis , multicellular organism , botany , mycelium , microbiology and biotechnology , morphogenesis , fungus , cellular differentiation , cell , biochemistry , genetics , shoot , gene
Contrary to the rarity of totipotent cells in animals, almost every cell formed by a fungus can function as a “stem cell”. The multicellular fruiting bodies of basidiomycete fungi consist of the same kind of filamentous hyphae that form the feeding phase, or mycelium, of the organism, and visible cellular differentiation is almost nonexistent. Mushroom primordia develop from masses of converging hyphae, and the stipe (or stem), cap, and gills are clearly demarcated within the embryonic fruiting body long before the organ expands and unfolds through water uptake and cell wall loosening. a Though frequent references are made to gilled mushrooms in this article, the totipotent nature of fruiting body cells and lack of meristems is also applicable to basidiomycetes that spread their spore‐producing tissues inside tubes (e.g., boletes), over spines and rippled surfaces, or form spores in cavities within the fruiting body. Even in the mature mushroom, every hypha retains its totipotency. Among animals, only sponges exhibit a similar degree of developmental flexibility, which is interesting, because these simple metazoans may be relatively close relatives of fungi. BioEssays 24:949–952, 2002. © 2002 Wiley Periodicals, Inc.