Aerobic and microaerobic diazotrophs possess numerous oxygen restriction strategies to protect nitrogenase from inactivation by oxygen without interfering with energy generation through oxidative phosphorylation. Protection by conformational change in nitrogenase was first detected and described in Azotobacter. This strategy once considerd unique for Azotobacter has been shown in this study to ...

One of the problems in the production of microbial preparations for agriculture is the maintenance of bacterial viability. One of the methods of improving the viability is an immobilization in the carrier material. Immobilization of plant growth-promoting bacteria Streptomyces griseoviridis and Azotobacter sp. in the peat and experimental ceramic granules was studied. Bacterial viability in ste...

Although the terminal respiratory chain of Azotobacter has been the subject of several recent studies, the nature of the cytochrome oxidase portion is still somewhat obscure. Repaske (1) partially purified and characterized a soluble succinic dehydrogenase and succinoxidase system from Azotobacter z&elan&i. Wilson and Wilson (2) studied the soluble succinoxidase in Repaske’s preparation and dem...

This study was carried out at the forest nursery of Department of Forestry, Faculty of Agriculture and Regional Research Station, Wadura SKUAST-K, Sopore, Kashmir during 2006 and 2007 to examine the role of live biofertilizers in litter decomposition and nutrient release in Salix fragilis under natural Salix stands. The experiment was laid in completely randomised design with three replications...

The application of organic fertilizers alone or in combination with bio-fertilizers is important for sustainable agriculture, healthy agricultural production and restoring soil quality. Compost, vermicompost and mycorrhiza amendments could improve soil quality and plant yield. However, little is known about their impact on yield and quality of European borage (Borago officinalis L.). To evaluat...

During the rabi season of 2021, a field experiment was conducted in North Western plains Uttarakhand at Crop Research Centre, School Agriculture, Uttaranchal University, Dehradun to examine impact integrated nutrient management (INM) on lentil growth, yield, and economics (Lens culinaris Medik.). The laid Randomized Block Design with seven treatments i.e. T1 (Control, 100% RDF (Recommended Dose...

Cultures of Azotobacter chroococcum strain A6 were grown for 14 days in a nitrogen-deficient mineral medium, the supernatant fluid and bacteria extracted and examined by paper partition chromatography with two solvent systems which separate authentic gibberellin (GA 3) and indolyl-3-acetic acid (IAA). Gibberellin-like substances were not detected on the chromatograms examined under ultraviolet ...

A labilis szén (LOC) tartalom, az active (POXC=permanganát oxidálható szén) mérése a talajok mikrobiális aktivitásának kimutatását szolgáló módszer. Célja növények és mikroorganizmusok számára is elérhető széntartalom megállapítása. Az LOC szerves anyagok egy kis- könnyen része, biomassza szénhidrát molekulák szén-tartalmának mérésével, érzékenyebb talajon végzett beavatkozásokra teljes vagy ös...

We should like to thank Mr D. M. Wallace for his help in diagnosis and in arranging for the collection of specimens. This research was supported by grants to the Royal Cancer Hospital and Chester Beatty Research Institute from the British Empire Cancer Campaign, the Jane Coffin Childs Memorial Fund for Medical Research, the Anna Fuller Fund and the National Cancer Institute of the National Inst...