Summary
A micioaerobic diazotrophic bacterium tentatively identified as a Pseudomonas species was isolated from a forest soil. Its nitrogenase (C2H2 reduction) activity in liquid medium was significantly supported by phenolic compounds when compared with glucose-, mannitol- or malate-supported activity. The utilization of phenolics was dependent on substrate induction and the appropriate oxygen concentration. At a pO2 of 0.05 protocatechuate was a better carbon source for N2 fixation than glucose. In the case of Lignobacter protocatechuate was a better carbon source for N2 fixation than glucose at pO2 0.2 but not at pO2 0.05. It is suggested that certain monomeric phenols can support nitrogenase activities in many carbon-limited soil environments.
Contribution No. 1484 from the Chemistry and Biology Research Institute, Agriculture Canada, Ottawa, Canada.
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© 1986 Martinus Nijhoff Publishers, Dordrecht
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Chan, YK. (1986). Utilization of simple phenolics for dinitrogen fixation by soil diazotrophic bacteria. In: Skinner, F.A., Uomala, P. (eds) Nitrogen Fixation with Non-Legumes. Developments in Plant and Soil Sciences, vol 21. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4378-0_11
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DOI: https://doi.org/10.1007/978-94-009-4378-0_11
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