Colony Structure of a Consortium of Nitrifying Bacteria |
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Authors: | Puzyr' A P Mogil'naya O A Gurevich Yu L Babkina E A |
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Institution: | (1) Siberian Division, Russian Academy of Sciences, Institute of Biophysics, Krasnoyarsk, 660036, Russia |
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Abstract: | Colonies produced by a consortium of nitrifying bacteria were studied using light and electron microscopy. The colonies were obtained by direct plating of inoculum from a two-stage nonsterile chemostat fermentor and by repeatedly passing the microbial community of the fermentor through selective media containing ammonium or nitrite. The colonies studied can be characterized by a specific combination of six types of cells differing in their ultrastructure and spatial location within the colony. The types of cells occurring within a given colony were found to depend on the nitrogen compound present in the medium. As a result of our study, morphological features of colonial bacterial communities were identified. The proposed approach can be viewed as a method to describe microbial associations and communities. |
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Keywords: | electron microscopy colony architectonics nitrifying bacteria |
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