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Amanita phalloides is SO NUTRITIOUS that eating a single bite is enough to FEED YOU FOR THE REST OF YOUR LIFE, which, in practical terms, is about 6-8 hours on average. (this is the death cap mushroom, which has a 50% case fatality rate, please do not eat.)
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The amatoxin contained in the Amanita phalloides completely inhibits your cells' ability to make new RNA, resulting in apoptosis of virtually every cell in your body. Survival rate with advanced treatment is still only ~50%.
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The amatoxins are remarkably dangerous: They're water-soluble, freeze-resistant, heat-resistant, and present in every tissue of the fungus. You can die from just putting them in the same basket with edible mushrooms (spores contain the amatoxin), cooking in water that has come in contact with them.
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At various stages of fruiting body growth, the death cap can resemble puff balls or straw mushrooms, so that amateur fungus-hunters are taking an awful risk in area where Amanita are found. Reminder of the old saying: All mushrooms are edible. Some are only edible ONCE.
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How closely related are these to the Death Angel, Amanita verna?
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From what I can tell: Very closely related cousins, both contain nearly identical cocktails of amanitins.
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Do they at least make you see some crazy stuff before you go, or not even that?
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Amazing story. Where are these found? Are they in North America?
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This is apparently the closest relative in NC--super common in the Piedmont including our lab--we called them all fungi when the kids were little to avoid any connection with an edible mushroom en.wikipedia.org/wiki/Amanita...
Amanita bisporigera - Wikipediaen.wikipedia.org
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Ah. How sad to see a big red 'introduced' dot parked right over my area. There are some local mushroom foragers who turn up at my farmer's market. I won't be risking that anymore. BTW, the info about the levels of toxicity is just amazing! Thx for sharing it.
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How do the fungi continue to synthesize rna
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They have a very specific mutation in the bridge helix region of their RNA polymerase II that makes them immune!
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Fascinating. Are there other organisms that are immune? That's SUCH a fundamental process to Life that it sort of feels like they've... created a new biochemistry incompatible with and anathema to the preexisting one. Death incarnate.
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Just one specific process is different, the rest is similar.
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What is the evolutionary advantage? If it's not visibly toxic, what is to dissuade animals from eating it?
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Only the fruiting bodies are really exposed to big vertebrate consumers, so my guess is that it doesn't need to offer aposematic warning, because eating the mushroom portion just decreases spore production. I think there's more survival advantage in killing grubs/worms? Not sure.
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Ah yes, killing nematodes and other soil pathogens would make sense. Why don't they rule the world?
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"I like my sister Constance, and Richard Plantagenet, and Amanita phalloides, the death-cup mushroom. Everyone else in my family is dead."
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I took a course on mushrooms, because I wanted to collect and eat them. The course frightened me so much that the only mushrooms I collect are store bought.
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Teach a man to build a fire, you keep him warm for a day. Set a man on fire, you keep him warm for the rest of his life.
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Qrik loves-loves this saying!
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"How many have you had?" "Four." *collapses in a puddle*
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It is kinda an evil looking mushroom
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"All mooshrooms are edible. But some are only edible *once*"
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Frightening! And it looks similar to Agrocybe, which is common and found everywhere.
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Miam! Miam! Où se trouve cette friandise?