Abstract
Azospirillum brasilense, an associative diazotrophs from sorghum roots grows autotrophically on NH +4 and CaCO3. NH +4 a is also oxidized to NO -2 and then denitrified. Addition of malate to the autotrophic medium enhances both NH +4 oxidation as well as NONH -2 dissimilation. The incomplete nitrification linked denitrification results in a rapid loss of nitrogen from the growth medium. The bacterium also shows assimilatory NO -3 and NO -2 reductases and fixes nitrogen at 50 μg N/ml of NH +4 NO -3 or NO -2
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Abbreviations
- ARA:
-
Acetylene reduction activity
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Kundu, B.S., Dadarwal, K.R. & Tauro, P. Nitrification and simultaneous denitrification byAzospirillum brasilense 12S. J Biosci 12, 51–54 (1987). https://doi.org/10.1007/BF02716953
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DOI: https://doi.org/10.1007/BF02716953