Utilization of Fixed Nitrogen by Azotobacter and Influence on Nitrogen Fixation
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چکیده
منابع مشابه
Utilization of Fixed Nitrogen by Azotobacter and Influence on Nitrogen Fixation.
The influence of fixed nitrogen on Azotobacter both with respect to utilization and inhibition of nitrogen fixation has been studied by a number of investigators. The results have not always been conclusive because of the relatively poor growths of cultures obtained in culture media now known to have been deficient in one or more of the elements essential for nitrogen fixation or growth, partic...
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Nitrogenase was isolated and purified from wildtype and a tungsten-resistant mutant (LM2) of Azotobacter vinelandii strain OP derepressed on medium containing 1-10 mM W. While the enzyme from the wild-type strain contained the polypeptides of the conventional enzyme, metal analysis of component 1 demonstrated the existence of one atom each of molybdenum and tungsten. Furthermore, the ESR spectr...
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The influence of graded x-ray doses upon nitrogen fixation and respiration by Azotobacter was studied by means of the Warburg method. It was found that nitrogen fixation decreases approximately linearly with increasing x-ray doses. Respiration in contrast is affected only indirectly through some inhibition of cell multiplication. Small doses of x-ray often produce a slight and transient increas...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1944
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.47.1.1-14.1944