Need help finding bacteria that produce water soluble pigments

Chris Fields cjfields at unt.edu.removethisbeforereply
Mon Jul 9 21:20:52 EST 2001


'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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