1887

Abstract

Histidine-grown cells of can accumulate more than 100 m free ammonia in the medium. Growth and respiration are unaffected by these concentrations of ammonia. Measurements of internal and external ammonia concentrations for cells grown on histidine or NHCl as nitrogen sources suggest rapid equilibration of ammonia across the cell membrane under conditions where actively accumulated solutes are retained. Implications of these results for movement of ammonia out of N-fixing bacteroids are discussed.

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1982-01-01
2022-01-22
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