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weird bacteria

Artem Evdokimov AEVDOKIMOZ at cinci.rr.com
Sun Mar 2 23:48:21 EST 2003


> > This is very interesting ! I would bet these bugs secrete biocins of
some
> > sort. If biocin secretion is associated with e.g. glucose in the medium,
and
> > if the bug is slightly sensitive to the biocins as well, perhaps this
would
> > explain the weird colony formation.
>
> [snip]
>
> Since all of the bacteria in the culture should carry the plasmid that
codes for
> production of the biocin, as well as the immunity protein that protects
the
> cells that carry the plasmid from the effects of the biocin, this is not a
very
> likely explanation.  One *could* propose a very high rate of spontaneous
curing
> but that is not consistent with maintenance of the plasmid and would have
been
> selected against.

It doesn't have to be a plasmid, though - it could be in the chromosome :)

I do agree that this explanation is stretching the limits of plausibility,
though.

Artem






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