'Tis true, 'tis true. And P. aeruginosa has many pigments (pyocyanin,
pyoverdin, pyorubrin, etc), each produced under specific conditions,
such as iron starvation (Fur-regulated).
Hmm, maybe it's time to rethink this experiment!
"Dr. Artem Evdokimov" wrote:
>> The relation between the concentration of the siderophore and the actual
> bacterial count can be assumed linear only under the most carefully
> controlled conditions, if ever.
>> Chris Fields wrote:
> >
> > Many bacteria produce water-soluble pigments due to iron starvation; the
> > pigments are siderophores that scavenge iron. Pseudomonas sp. and
> > Azotobacter are but a few that do this. Azotobacter can actually be
> > identified based on the pigments produced, much like the Pseudomonads,
> > and can be isolated by using a defined nitrogen-free media like Burke's.
>> --
> |Dr. Artem Evdokimov Protein Engineering |
> | NCI-Frederick Tel. (301)846-5401 |
> | FAX (301)846-7148 |
> | eudokima at mail.ncifcrf.gov |
> | http://www.ncifcrf.gov/plague |
--
C. J. Fields
Graduate Student, Dept. of Biological Sciences
The University of North Texas
Denton, TX
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