Nitrogen Fixing Organisms: Pure and Applied AspectsThis book is concerned essentially with how nitrogen-fixing organisms function and why they are of practical importance. Special chapters deal with nitrogen fixation in agriculture, in forestry, and in aquatic and terrestrial ecosystems. In an appendix an outline of the main methods used for measuring nitrogen fixation, and some of the problems that must be faced is given |
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Page 72
... substrate phosphorylation . Thus for every pyruvate we have two low redox potential reductant molecules and one ATP molecule whereas the requirement for nitrogenase is two ATP for each electron ! Although K. pneumonieae is unusual among ...
... substrate phosphorylation . Thus for every pyruvate we have two low redox potential reductant molecules and one ATP molecule whereas the requirement for nitrogenase is two ATP for each electron ! Although K. pneumonieae is unusual among ...
Page 75
... Substrate versatility of nitrogenase In addition to nitrogen and protons , nitrogenase can catalyse the reduction of many other substrates by cleaving N - N , N = O and C = N bonds . The possible reductions are listed in Table 3.4 ...
... Substrate versatility of nitrogenase In addition to nitrogen and protons , nitrogenase can catalyse the reduction of many other substrates by cleaving N - N , N = O and C = N bonds . The possible reductions are listed in Table 3.4 ...
Page 143
... substrates . About 3.6 kg N ha ̄1 a ̄1 were thought to be fixed by the litter , in agreement with a value of 1-5 kg N ... substrate , whereas anaerobic fixers could use energy sources in root exudates . Thus once again we have the nature ...
... substrates . About 3.6 kg N ha ̄1 a ̄1 were thought to be fixed by the litter , in agreement with a value of 1-5 kg N ... substrate , whereas anaerobic fixers could use energy sources in root exudates . Thus once again we have the nature ...
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Common terms and phrases
acetylene acid actinorhizal plants aerobic Alnus ammonium Anabaena anaerobic areas associated Azolla Azotobacter bacteria bacteroids biological nitrogen fixation Bradyrhizobium Bradyrhizobium japonicum carbon Casuarina clover combined nitrogen coralloid roots crop cyanobacteria cycads ecosystems effects electron endophyte endosymbiont environment enzyme factors Faria fertilizer filaments fix nitrogen forests Frankia free-living genera genus glutamine grown growth habitats hair infection heterocystous host cells hyphae increase infected cells infection thread japonicum kg N ha¹ legume nodules legumes lichens metabolism micro-organisms Microbiol mycorrhizal N₂ nif genes nitrate nitrogen cycle nitrogen fixation nitrogen-fixing nitrogen-fixing organisms nitrogen-fixing plants nitrogen-fixing species nitrogenase nitrogenase activity nodule activity non-legume Nostoc nutrient O₂ oxidized oxygen Parasponia photosynthetic Postgate potential production protein reduced reductase rhizobia Rhizobium role root hairs root nodules Silvester soil nitrogen soybean Sprent studied substrate suggest supply symbiotic synthesis Table temperature trees Trifolium tropical ureide vascular vesicles