Summary
Curves were established for the pH response of respiration on eleven substrates byAzotobacter vinelandii andAcetobacter diazotrophicus. With every substrate the optimal pH forA. diazotrophicus was lower than forA. vinelandii. The optimal hydrogen ion concentration forA. diazotrophicus was 5 fold to 365 fold greater than forA. vinelandii depending upon the substrate. In general,A. diazotrophicus supports respiration over a wider pH range than doesA. vinelandii.
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Dedicated to the memory of Professor John G. Torrey
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Burris, R.H. Comparative study of the response ofAzotobacter vinelandii andAcetobacter diazotrophicus to changes in pH. Protoplasma 183, 62–66 (1994). https://doi.org/10.1007/BF01276813
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DOI: https://doi.org/10.1007/BF01276813