Cell-surface hydrophobicity and scum formation of Rhodococcus rhodochrous strains with different colonial morphologies
| Autor: | H. Murooka, Michio Sunairi, Nakajima Mutsuyasu, Noriyuki Iwabuchi, Hisao Morisaki, Y. Yoshizawa |
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| Rok vydání: | 1997 |
| Předmět: |
Morphology (linguistics)
Membrane Glycoproteins Strain (chemistry) Hypha Sewage Cell Rhodococcus rhodochrous General Medicine Biology biology.organism_classification Applied Microbiology and Biotechnology Bacterial Adhesion Activated sludge medicine.anatomical_structure Biochemistry Chemical engineering Mycolic Acids medicine Rhodococcus Electrophoretic mobilities Hydrophobic and Hydrophilic Interactions Bacteria Biotechnology |
| Zdroj: | Journal of applied microbiology. 82(2) |
| ISSN: | 1364-5072 |
| Popis: | Rhodococcus rhodochrous has been reported to be one of the micro-organisms responsible for the formation of scum which is thick and viscous biological foam in activated sludge plants. The hydrophobicity of mycolic acids present on the cell surface and the long-branched shape of the hyphae have been thought to contribute to the scum formation. Cell surface hydrophobicity and scum formation of four R. rhodochrous strains with different colony morphologies were determined, and the results showed that the two rough strains had strong cell surface hydrophobicity and produced scum, whereas the weakly hydrophobic smooth strain and the hydrophilic mucoidal strain did not. All four strains displayed long, branched hyphae, and their electrophoretic mobilities were similar, between pH 4 and 9. These data suggest that changes in the cell surface hydrophobicity of the R. rhodochrous result in changes in the culture characteristics and the formation of scum. |
| Databáze: | OpenAIRE |
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