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Environ Microbiol. 2005 Jun;7(6):874-80.

Moderately thermophilic Myxobacteria: novel potential for the production of natural products isolation and characterization.

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Gesellschaft für Biotechnologische Forschung mbH (GBF), Mascheroder Weg 1, Braunschweig 38124, Germany.


Novel moderately thermophilic Myxobacteria from both known suborders (Cystobacterineae and Sorangineae) were isolated from soil samples of semiarid and warm climates. The addition of the anthelmintic and amoebizidal agent levamisole was a new and crucial improvement for the fast isolation of overall 37 strains, which grew very fast at temperatures of 42-44 degrees C. When the 16S rDNAs were compared with GenBank data of common Myxobacteria, identities were 98-99%, thus not reflecting the physiological differences. Similar to the Myxobacteria described so far, the new isolates are multiresistant against a variety of antibiotics and are producers of typical myxobacterial secondary metabolites. Analysis of our previous strain collection isolated from soil samples taken worldwide revealed a more or less uniform distribution of strains which synthesize specific metabolites. Therefore these moderately thermophilic Myxobacteria, which grow 2-3 times faster, have the potential to replace the slow-growing isolates and provide a means for fast and cost-saving production of myxobacterial metabolites in the future.

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