Fungus Fact Friday

Tagged: development

how fungi develop (grow, take shape, coordinate actions, etc.)

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#071: Flammulina velutipes, The Velvet Foot or Enoki

It’s often said that you can tell how edible a mushroom is by the number of names it has. This concept certainly applies to the edible Flammulina velutipes, which goes by the common names Enokitake (and the shortened form Enoki), Velvet Foot, Winter Mushroom, and Golden Mushroom, as well as many other derivatives and regional names (if you’re outside the United States, you probably call it something else!). Another reason the species has so many names is because it looks very different in the wild than it does in the grocery store: in the wild, it grows as an orange umbrella-shaped mushroom with a black fuzzy stipe, but when cultivated it grows as a pale thin needle-shaped (or perhaps spaghetti-shaped) mushroom with a tiny pileus. I generally use the names F. velutipes, Velvet Foot, and Enoki, since each one emphasizes a different physical aspect of the mushroom.

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#235: Developmental Mycology

Developmental biology focuses on the question, “How do organisms start out as a single cell and then become large complicated structures with distinct tissues, shapes, and sizes?” In the context of mycology, studying development means researching the formation of structures such as mushrooms, sclerotia, and rhizomorphs. Not surprisingly, most developmental mycology research focuses on mushrooms, which are the largest and most interesting of the complex structures formed by fungi. In my previous post (FFF#234), I summarized what we know about mushroom development. Today, I will go into more detail on the mechanisms and processes that drive fruitbody development.

Amanita muscaria development 2

Current / Fungus Fact

#234: Mushroom Development

My first introduction to mushrooms was as a child seeing them appear as if by magic in my family’s lawn. This mysterious way that fungi appear to pop into existence still captures my imagination, which brought me to the small but interesting field of mushroom development. So, can science explain how mushrooms appear out of thin air? Mostly, but there is still much we don’t know. Obviously, mushrooms don’t materialize out of nothing – instead, they sprout from the mycelium already growing in the substrate. Typically, this proceeds as follows: the mycelium bunches up, then the various mushroom tissues are created, and finally whole fruitbody gets larger. However, this generalized model has limitations and can’t explain all the variation we see in mushroom shapes. Why Study Mushroom Development? Before we get into the details, it is useful to discuss why mushroom development should be studied. One of the major reasons...