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Mushrooms, Mycology and Psychedelics > Gourmet and Medicinal Mushrooms
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P. ostreatus and A. bisporus "Crimini" on agar
    #1600479 -

Cloned from supermarket 10 days ago on potato water-oatmeal-sucrose agar. Notice how the A. bisporus is altering the color of agar. This is NOT bacterial contamination.



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Grow Mushrooms from Spores - PF-Tek for Simple Minds

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Re: P. ostreatus and A. bisporus [Re: Anno]
    #1600502 -

That ostreatus is quite quick. Good job! I also noticed altering of the agar color in some cultures. Are you sure that's OK?

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Re: P. ostreatus and A. bisporus [Re: zeronio]
    #1600558 -

Yes, look for yourself:



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Grow Mushrooms from Spores - PF-Tek for Simple Minds

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Re: P. ostreatus and A. bisporus [Re: Anno]
    #1600600 -

The myc and the agar surface looks healthy.
Currently I don't have A. bisporus but I saw this before with a different species - Polyporus tuberaster - and it dissapeared over time!

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Re: P. ostreatus and A. bisporus [Re: Anno]
    #1600788 -

Now you tell us !

I've thrown out a few cultures due to that same discoloration !!!  :blush: 


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PROMOTE BACTERIA. THEY'RE THE ONLY CULTURE SOME PEOPLE HAVE.

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Re: P. ostreatus and A. bisporus "Crimini" on agar [Re: Anno] * 1
    #1601313 -

Yeah, I have found that following species alter the color of the agar that I use which is a Potato Dextrose Agar Oatmeal agar (with a little peptone and Yeast extract): A. campestris, Macrolepiota rhacodes, Coprinus comatus (really darkens the oatmeal peices), Phellinus ignarius, and Fomes fometopsis.


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Listen! Do you smell something?

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Re: P. ostreatus and A. bisporus "Crimini" on agar [Re: r05c03]
    #1604657 -

C. Comatus is really bad in that aspect. It trips me out to look at the underside of the agar.


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Raadt

-- The information I provide is only information from readings, growing of gourmet mushrooms, and second hand stories--

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Re: P. ostreatus and A. bisporus [Re: Anno]
    #1605468 -

I used to get a lot of sabauraud's agar [surplus] and it darkened with almost everything I grew on it.  Identical inoculations onto PDA did not do it as much.
Playing around with Bio's cordyceps culture, I found that it REDDENED PDA agar, but not sabaurauds.  It was not contaminated, just red.  Interesting :tongue:
Nice clones, Anno! 

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Mushrooms, Mycology and Psychedelics > Gourmet and Medicinal Mushrooms
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