Nitrogen-fixing bacteria examples comprise Rhizobium (formerly Agrobacterium), Frankia, Azospirillum, Azoarcus, Herbaspirillum, Cyanobacteria, Rhodobacter, Klebsiella, etc. N-fixing bacteria synthesize the unique nitrogenase enzyme responsible for N fixation. Are nitrates bacteria? The bacteria species in soil that convert nitrites to nitrates all belong to the genus Nitrobacter. There are four identified species:Read More →