Adhesion of Dissimilatory Fe(III)-Reducing Bacteria to Fe(III) Minerals
| Autor: | Frank Caccavo, Amitabha Das |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Mineral
biology Inorganic chemistry Shewanella algae Adhesion engineering.material Flagellum biology.organism_classification Microbiology Hydrous ferric oxides Hydrophobic effect Earth and Planetary Sciences (miscellaneous) engineering Biophysics Environmental Chemistry Cell adhesion Bacteria General Environmental Science |
| Zdroj: | Geomicrobiology Journal. 19:161-177 |
| ISSN: | 1521-0529 0149-0451 |
| Popis: | The metabolism of dissimilatory iron-reducing bacteria (DIRB) may provide a means of remediating contaminated subsurface soils. The factors controlling the rate and extent of bacterial F(III) mineral reduction are poorly understood. Recent research suggests that molecular-scale interactions between DIRB cells and Fe(III) mineral particles play an important role in this process. One of these interactions, cell adhesion to Fe(III) mineral particles, appears to be a complex process that is, at least in part, mediated by a variety of surface proteins. This study examined the hypothesis that the flagellum serves as an adhesin to different Fe(III) minerals that range in their surface area and degree of crystallinity. Deflagellated cells of the DIRB Shewanella algae BrY showed a reduced ability to adhere to hydrous ferric oxide (HFO) relative to flagellated cells. Flagellated cells were also more hydrophobic than deflagellated cells. This was significant because hydrophobic interactions have been previously show... |
| Databáze: | OpenAIRE |
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