The Slime Mould Collective

An international network of/for intelligent organisms

I recently had a petri dish of P. Polycephelum become contaminated with an unidentified white mold. When I discovered the mold in the morning I also found sclerotic bodies forming right next to each of the two areas of contamination.  It seems, at first glance, that the slime mold is responding to predation by fruiting.  I have never seen any references to this sort of behavior in this species before.  I am about to start a couple of experiments to see whether this is an actual response that I am witnessing or just a coincidence.  While that's happening though, has anyone here seen this sort of behavior before?

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hi jeremiah, i have observed this as well. i had several times contamination by some mold and p.p. forming fruiting bodies soon after. i remember once i had p.p. using the mold to climb up to the lid of the petri dish trying to get away from the ground. but i never observed this closely or did repetitive experiments... but would be interesting to see your results...

I believe this is known as Black Bread Mold, or Rhizopus Stolonifer.

We have been struggling with this for months, using more and more stringent sterilization techniques, and still coming up with this mold within several days of a clean P.P. growth from sclerotium.  

Our latest theory (posited by Carolina) is that Agar is the source: multiple re-heatings and exposures of the agar may infect it, and if it is used as a base for growth, than you have an infected base, and le voila!

Any suggestions out there??


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