12/6/08

I took BART to the fungus fair

at the Oakland Museum. (BART is like our subway.) The 39th Annual Fungus Fair, in fact. (I think I'm 39.)

Garden clubs go starving for membership. Independent nurseries close up and go out of business. Seed companies sell out to big corporations.

Are plants yesterday's news? Is fungus is the thing now? Read any good fungus blogs lately?

DSCF1091

DSCF1092

DSCF1055

DSCF1089

DSCF1088

I learned how to distinguish the death cap Amanita phalloides from similar, edible varieties. The death cap lacks small striation marks around the edge of the cap. That made it seem easy to tell them apart. Well, I don't like to eat mushrooms very much, so getting confused likely won't be a problem for me.

DSCF1073

You can see how alike the death cap is to an edible mushroom. (Left is edible; right is poisonous)

DSCF1080

Originally from Europe, but introduced to California 100 years ago, the death cap is now very common in the Bay Area. The local news reports at least a few poisonings every year. Mushroom foraging is a popular family activity with some Asian communities.

The fungus forms an ectomycorrhizal relationship with many California native plants including the Monterey Pine (Pinus radiata) which is one of the most commonly planted plants in the world. Speaking of mycorrhyzae, here's a picture of just such a fungus-plant symbiotic relationship with a pine seedling.

DSCF1084

You don't water California native plants during the hot summer because the water arouses dormant pathogenic fungi which quickly overtake the beneficial symbiont. The pathogenic fungi can out-compete the symbiont, and the plant dies.

I also learned that you can touch poisonous mushrooms without fear of poisoning. I thought you weren't even supposed to touch them, but I was told it's okay to touch any mushroom. (Unless, like anything else, you have a skin allergy.) You can even put a death cap in your mouth and chew--just do not swallow.

The poison itself is a peptide (i.e., protein), like ricin from castor bean (Ricinus communis), but unlike many plant poisons which tend to be small molecules like strychnine alkaloids or digitalis glycosides.

Mushrooms do make some small molecules however. Psilocybin, the psychoactive material in so-called hallucinogenic mushrooms is a simple chemical derivative of the ubiquitous neurotransmitter serotonin, which is known in many animals and plants, as well as mushrooms and some single-celled organisms. Walnut, pineapple, banana, and tomato all contain serotonin. (Note: anyone know about serotonin in a prokaryote?)

There were experts on hand for identifying mushrooms, and lots of tips for the amateur.

DSCF1081

DSCF1077

DSCF1079

I learned where the fly agaric mushroom (Amanita muscaria) got its common name. The mushroom has a chemical that attracts and stupefies flies. People used to put the cap in the kitchen upside down and it would fill up with flies that could be thrown out.

DSCF1082

Speaking of flies, here's a picture (of a picture!) of a fly parasitized by a Cordyceps fungi and the mushroom growing out of it. Think about the fly being converted to mushroom. Amazing. See Planet Earth Cordyceps footage here.

DSCF1083

Several other fungi parasitize flies. Someone could have written a better sign for this one.

DSCF1075

The grooviest fungus I saw today was definitely the Ballerina Earthstar, Geastrum fornicatum. Earthstars are apparently common across North America, although I'd never heard of them until today.

DSCF1074

When the fruiting body emerges from the ground, it starts off as a compact, round mass (you can see one at 9 o'clock in the picture above, and I don't know why there's a turtle shell in this display--please don't ask me about that). Then, when it's time to release the spores, the compact round part opens up and the "ballerina" stands up on three legs. The spores are released through an operculum on top of the round puffball that sits on top of the legs in response to a mechanical disturbance, e.g., the impact of a raindrop. If that isn't the most amazing thing you've heard today, I don't know what to tell you.

Have you heard of this before?

DSCF1060

This woman brought a large collection of note cards and notebook pages about mushrooms she's collected and the different processes she used to extract pigments from them used to dye yarns. All very detailed and thorough, plus, she drew color pictures of everything she collected.

DSCF1062

DSCF1061

Truly, there are some remarkable people in the world.

I actually spent most of my time talking to the woman from the California Lichen Society. I would like to join the California Lichen Society. California has a great diversity of lichens and apparently people come from all over the world to see our lichens. So how come I've never met a lichen tourist before?

DSCF1063

Lichens, you may know, are fungal-algal symbiotic pairs that typically grow on rocks or dead wood or live epiphytically. Any scientific name for a lichen refers to the fungus, as the algal part is microscopic and lives inside. Apparently, a theory now is that all mushrooms have a lichen in their evolutionary past. Have you heard of the Amherst biologist Lynn Margulis? I was reading about her endosymbiotic theory when I got up to get a glass of milk just before the Loma Prieta Earthquake of 1989.

DSCF1064

Margulis theorized that our cell mitochondria were originally separate organisms that were taken inside the cell as a symbiont. Now they're us. The notion of where one thing ends and another thing begins has always fascinated me. What is the manzanita without its mycorrhizae?

If none of that interests you, there was mushroom soup,

DSCF1094

and kids doing mushroom art,

DSCF1093

and some more awesome mushrooms.

DSCF1058

DSCF1054

DSCF1053

DSCF1068

ADDED: Six ways mushrooms can save the world, video.

9 comments:

Les, Zone 8a said...

Yes indeed, there are truly some remarkable people in the world. What's up with the Christmas lights?

Christopher C. NC said...

This post makes me think of specialization. The specialization of species to utilize every aspect of the environment and the specialization of interests that fascinate people's minds.

There is even specialization within a special interest. Fly eating fungus and mushroom soup or mushroom dye.

weeder1 said...

Wow! Once again, almost like being there with your great photos and commentary. Thanks!

M said...

"Mushrooms are fun-jee. Your science teacher is a fun guy."

Abigail Rose said...

Very cool. Do you have your new camera yet?

Brent said...

I thought the pine picture illustrating the fungus-plant symbiotic relationship was AMAZING!

I've always wanted to know more about mushrooms. Mostly, I'd like to eat them, but I suppose that in the process of mushrooming I'd broaden my perspective.

I even purchased the Falcon Guide to North American Mushrooms, which looks wonderfully complete. Sadly, it's been unread as I do other, more urgent, things.

Frances said...

Nice to see you so excited about something Chuck, out of ennui? Lots to digest here, you did a masterful job of covering so much offered at this fair. I had a special interest in the dye lady, her art was amazing too. The mushroom composting the fly, sort of yucky but interesting. I think I am aware of the cactus type serotonin, coming of age in the late '60s, HA. I hope you do join the lichen society, those are plentiful here too and I have a collection that I would love to identify. Maybe you could recommend some sites with photos and names.
Frances

Annie in Austin said...

Well, it's not exactly a fungi blog, Chuck, but Rurality in Alabama got a discussion going on a recent Fungi Post.

What a quote! "Life did not take over the globe by combat, but by networking"

What's the rest of the story after you got up to get the glass of milk in 1989? Since you're here to tell the tale, I won't be afraid to hear it.

Annie at the Transplantable Rose

lisa said...

I absolutely HAVE to attend that fair! This post was so informative,you taught me so many things I never knew (and I read about mushrooms a lot!) Mushroom dye? Amazing! Those oyster mushrooms in the first shot are sooo delicious...did you buy any mushrooms to try? We had a nature program when I was a kid called "Indiana Outdoors", and they had a segment called "I Like Lichens" where he would introduce a new lichen every week...fun stuff.