Fixação do dióxido de carbono por bactérias nitrificantes
DOI:
https://doi.org/10.1590/S0071-12761964000100004Abstract
During the oxidation of the substrate, both Nitrosomonas and Nitrobacter have part of the energy made available as high energy phosphate, mamely ADP and ATP. This chemical energy is used to fix CO2. The nature of the reducing power is unknown at present. Active cells of Nitrobacter were shown to fix CO2 along the same pathway as found in higher plant photosynthesis. Sonic extracts of Nitrosomonas and Nitrobacter when incubated with NaH14CO3 and cofactors showed two ports of entry of CO2 into organic compounds one being, as expected, the carboxidismutase reaction. On protein basis an equivalent amount of CO2 was, however, incorporated via the oxaloacetic carboxylase reation. It is clear then that both micoorganisms possess typical autotrophic and heterotrophic mechanisms for the fixation of CO2 which is required for the primary synthesis of cell material.Downloads
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Published
1963-12-31
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Section
naodefinida
How to Cite
Malavolta, E., Crocomo, O. J., & Delwiche, C. (1963). Fixação do dióxido de carbono por bactérias nitrificantes . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 21, 33-41. https://doi.org/10.1590/S0071-12761964000100004