Effect of the composition of the growth medium on morphology and reproduction of Azotobacter chroococcum

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ID: 118351
1970
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Abstract
The growth of threeAzotobacter chroococcum strains was investigated in a number of media. The cultures were incubated at 29°C. and studied by means of a Wild phase contrast microscope. The experiments have clearly demonstrated that the morphology and reproduction ofA. chroococcum are influenced greatly on the one hand by conditions of nutrition and on the other hand also by the properties of the strains. Although all strains used in this work were able to produce gonidia and regenerative rods, these were not found in all media. The formation of filamentous cells, and vegetative cells inside such cells, depended also on the medium and, in some cases, on the strain. Cysts could sometimes resist a temperature of 50°C. for 5.5 minutes, but not a single strain with cysts survived temperatures of 60°C. or higher. Spores could not be detected by the usual staining methods.
Reference Key
schreven1970antonieeffect Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors D. A. van Schreven;D. A. van Schreven;
Journal antonie van leeuwenhoek
Year 1970
DOI
doi:10.1007/BF02538728
URL
https://link.springer.com/article/10.1007/BF02538728
Keywords
Microbiology plant sciences medical microbiology soil science & conservation

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