| Title | Bacterial Color Response to Hexavalent Chromium, Cr^6+ |
|---|---|
| Author | Ka Hong Cheung 1 and Ji-Dong Gu 1,2 * |
| Address | 1 Laboratory of Environmental Toxicology, Department of Ecology & Biodiversity, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P.R. Ch |
| Bibliography | Journal of Microbiology, 40(3),234-236, 2002, |
| DOI | |
| Key Words | bacterial pollution indicator, biomonitoring, chromium, heavy metals, pollution, Vogesella indigofer |
| Abstract | A blue pigment-producing bacterium, Vogesella indigofera, was isolated and quantified for the relationship between its synthesis of a blue pigment and exposure concentrations of Cr^6+ . The concentration of Cr^6+ and the percentage of blue colonies on agar plates was negatively correlated (r^2 = -0.8683). Critical concentrations inhibiting bacterial pigment production were found to be between 100-150 ug Cr^6+ /ml on agar plates and 200-300 ug Cr^6+ /ml in liquid culture. As the blue color is characteristic and easily observable, the bacterium Vogesella indigofera may have potential applications in the detection and monitoring of environmental pollution. |
| Download PDF | 403-05.pdf |