Applied and Environmental Microbiology, December 2002, p. 6462-6465, Vol. 68, No. 12
0099-2240/02/$04.00+0 DOI: 10.1128/AEM.68.12.6462-6465.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
Disruption of narH, narJ, and moaE Inhibits Heterotrophic Nitrification in Pseudomonas Strain M19
D. R. Nemergut and S. K. Schmidt*
Department of Environmental, Population and Organismic Biology, University of Colorado, Boulder, Colorado 80309
Received 25 April 2002/
Accepted 6 September 2002
Interruptions in three nitrate reductase-related genes, narH, narJ, and moaE, inhibited heterotrophic nitrification in Pseudomonas strain M19. No nitrate was detected in the medium, and nitrification proceeded in the presence of a nitrate reductase inhibitor. Heterotrophic nitrification was greatly stimulated by the addition of nitrate.
* Corresponding author. Mailing address: Department of Environmental, Population and Organismic Biology, University of Colorado, Campus Box 334, Boulder, CO 80309. Phone: (303) 492-6248. Fax: (303) 492-8699. E-mail: schmidts{at}spot.colorado.edu.
Applied and Environmental Microbiology, December 2002, p. 6462-6465, Vol. 68, No. 12
0099-2240/02/$04.00+0 DOI: 10.1128/AEM.68.12.6462-6465.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
Copyright © 2002 by the American Society for Microbiology. All rights reserved.