Abstract
Azospirillum brasilense and Arthrobacter giacomelloi were grown together in batch culture under different oxygen pressures. The response to oxygen of growth, nitrogenase activity and respiration rate was determined. The two microorganisms were found to be able to coexist all over the range of partial oxygen pressures examined, that is from 0.004–0.20 bar. Nitrogenase activity by mixed culture of A. brasilense and A. giacomelloi always appeared higher than that of A. brasilense pure culture. Low respiratory activity at partial oxygen pressures higher than 0.02 bar by both pure and mixed cultures seemed not to account for the high nitrogenase activity and improved oxygen tolerance of the mixed culture.
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Abbreviations
- pO2 :
-
partial oxygen pressure
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Cacciari, I., Lippi, D., Ippoliti, S. et al. Response to oxygen of diazotrophic Azospirillum brasilense — Arthrobacter giacomelloi mixed batch culture. Arch. Microbiol. 152, 111–114 (1989). https://doi.org/10.1007/BF00456086
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DOI: https://doi.org/10.1007/BF00456086