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Anonymous

Interesting observation
    #1563166 - 05/20/03 04:10 PM (13 years, 11 months ago)

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OfflineToxicManM
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Re: Interesting observation [Re: ]
    #1563235 - 05/20/03 04:39 PM (13 years, 11 months ago)

I know that a number of Marasmius species do that, but I hadn't heard of an Agrocybe doing it. Maybe it wasn't as far gone as it looked.


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InvisibleRebelSteve33
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Re: Interesting observation [Re: ]
    #1563298 - 05/20/03 05:11 PM (13 years, 11 months ago)

Wow, that's so weird! I didn't know any kind of mushroom could do that. I thought it was a trait held only by plants, with their lignified, cellulose walls.

You have a microscope, right, Mr. Mushrooms? Take a cross section of the mushroom's stem and see if you notice anything different about the cells compared to those of a normal mushroom that doesn't rehydrate.

I'm going to take a look in my Botany book and see if it mentions anything about this phenomenon and the precise mechanics behind it. I'll post again if I find anything worth mentioning.

Peace,

RebelSteve


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InvisibleRebelSteve33
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Re: Interesting observation [Re: ToxicMan]
    #1563305 - 05/20/03 05:14 PM (13 years, 11 months ago)

Do you know what it is about the Marasmius species that allows them to rehydrate, when most other mushrooms can't?  I wonder why only a few mushrooms have evolved this capability...

Interesting, indeed, Mr. Mushrooms! :laugh:

-RebelSteve


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OfflineToxicManM
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Re: Interesting observation [Re: RebelSteve33]
    #1563358 - 05/20/03 05:34 PM (13 years, 11 months ago)

A little research has shown some interesting things...

A number of other mushrooms also revive. Some Collybias do it, but they're so closely related to Marasmius that there are species that have bounced back and forth between them. Both genera will no doubt be trashed thoroughly by the molecular biologists when they get to it.

In Marasmius oreades, some specimens will no longer revive after 2 years, and after 5 years none will.

The apparent mushroom champ is Schizophyllum commune, specimens of which have been revived successfully after 52.5 years!

According to this outline, the reviving is due to something metabolic within the fungus. The author seems to suspect trehalose, a simple sugar, or its chemical relatives are involved.

Happy mushrooming!


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InvisibleRebelSteve33
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Re: Interesting observation [Re: ToxicMan]
    #1563380 - 05/20/03 05:44 PM (13 years, 11 months ago)

Neat!  Thanks for the info and the link.

I attended a lecture this past semester on how certain animals withstand freezing during the winter.  The speaker was a professor who had done extensive research on this issue using wood frogs, or Rana sylvatica.

He found that just prior to winter, the glucose (or was it glycogen; I can't remember now! :crazy:) levels in the frog raised considerably, and it was this sugar that was primarily responsible for keeping the animal alive in its frozen state.  It sounds like trehalose might serve this same function in certain fungi, from what that website says.  I guess only certain fungi have that sugar, and that is why only certain fungi can survive dessication and be revived.

Cool stuff! :laugh: 


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Anonymous

Re: Interesting observation [Re: ToxicMan]
    #1563851 - 05/20/03 09:15 PM (13 years, 11 months ago)

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