Effects of Pesticides on Nitrite Oxidation by Nitrobacter agilis1
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چکیده
منابع مشابه
Kinetics of nitrite oxidation by Nitrobacter winogradskyi.
Preliminary data on the kinetics of the oxidation of nitrite by Nitrobacter were presented by Laudelout & van Tichelen (1960). The present observations complete and extend the results concerning the effects of pH, concentrations of nitrite and of nitrate, temperature and oxygen partial pressure on the parameters of the rate equation for the oxidation of nitrite by intact cells and cell-free ext...
متن کاملKinetics of the nitrite oxidation by Nitrobacter winogradskyi.
Few quantitative studies of the biological oxidation of nitrite by Nitrobacter have been made, although this process is important in nature. Without it, the concentration of nitrite produced by the oxidation of ammonia would soon reach toxic levels in water or in the soil. The influence of temperature and substrate concentration on the rate of this reaction has never been quantitatively studied...
متن کاملOXIDATION OF OXYHEMOGLOBIN BY SODIUM NITRITE A kinetical study on the oxidation of hemoglobin to methemoglobin by nitrite
The detailed mechanism of the reaction was further clarified by Martin et al4) in 1963 by investigating the relationship between the molecular structure of hemoglobin and the rate of the oxidation by nitrite. In these studies, however, the significance of the initial phase of the reaction, which will be clarified in the present paper, was insufficiently understood. As shown in Fig. 1, two phase...
متن کاملAmmonia stimulates growth and nitrite-oxidizing activity of Nitrobacter winogradskyi
The aim of this study was to obtain a nitrite-oxidizing bacterium with high nitrite oxidation activity for controlling nitrite levels. A nitrite-oxidizing bacterium, ZS-1, was isolated from the water of a coastal Pseudosciaena crocea-rearing pond. The strain was identified as Nitrobacter winogradskyi based on the phylogenetic analyses of the 16S ribosomal ribonucleic acid gene and nxrA sequence...
متن کاملNitrite oxidase and nitrate reductase in Nitrobacter agilis.
Nitrite oxidase and nitrate reductase in Nitrobacter agilis were shown to be separate enzymes. The best separation of the two systems was achieved by ammonium sulphate fractionation. The effects of various compounds, including antimycin A, 2-n-heptyl-4-hydroxyquinoline N-oxide and chlorate, also clearly distinguish between the two enzyme reactions. The relationship between the two opposing reac...
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ژورنال
عنوان ژورنال: Applied Microbiology
سال: 1970
ISSN: 0003-6919
DOI: 10.1128/aem.19.2.214-219.1970