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Isolation of nitrogen-fixing bacteria containing molybdenum-independent nitrogenases from natural environments
T M Loveless1, J R Saah, P E Bishop
1USDA Agricultural Research Service and Department of Microbiology, North Carolina State University, Raleigh, North Carolina 27695-7615, USA.
Applied and Environmental Microbiology
|September 3, 1999
Abstract:
Seven diazotrophs that grow well under Mo-deficient, N(2)-fixing conditions were isolated from a variety of environments. These isolates fall in the gamma subdivision of the class Proteobacteria and have genes that encode the Mo nitrogenase (nitrogenase 1) and the V nitrogenase (nitrogenase 2). Four of the isolates also harbor genes that encode the iron-only nitrogenase (nitrogenase 3).