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Study of the Response of a Biofilm Bacterial Community to UV Radiation
Open accessAbstract
We have developed a bioluminescent whole-cell biosensor that can be incorporated into biofilm ecosystems. RM4440 is a Pseudomonas aeruginosa FRD1 derivative that carries a plasmid-based recA-luxCDABE fusion. We immobilized RM4440 in an alginate matrix to simulate a biofilm, and we studied its response to UV radiation damage. The biofilm showed a protective property by physical shielding against UV C, UV B, and UV A. Absorption of UV light by the alginate matrix translated into a higher survival rate than observed with planktonic cells at similar input fluences. UV A was shown to be effectively blocked by the biofilm matrix and to have no detectable effects on cells contained in the biofilm. However, in the presence of photosensitizers (i.e., psoralen), UV A was effective in inducing light production and cell death. RM4440 has proved to be a useful tool to study microbial communities in a noninvasive manner.
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Cites
Recent advances in psoralen phototoxicity mechanism
Averbeck, D. (1989) · Photochemistry and Photobiology · doi:10.1111/j.1751-1097.1989.tb02917.x · Cited by 215
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Monds, R. D., & O’Toole, G. A. (2009) · Trends in Microbiology · doi:10.1016/j.tim.2008.11.001 · Cited by 532
Verla, A. W., Enyoh, C. E., Verla, E. N., & Nwarnorh, K. O. (2019) · SN Applied Sciences · doi:10.1007/s42452-019-1352-0 · Cited by 499
Inorganic polyphosphate in the origin and survival of species
Brown, M. R. W., & Kornberg, A. (2004) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0406909101 · Cited by 327
Slieman, T. A., & Nicholson, W. L. (2000) · Applied and Environmental Microbiology · doi:10.1128/aem.66.1.199-205.2000 · Cited by 156
Miklossy, J. (2016) · Journal of Alzheimer’s Disease · doi:10.3233/jad-160451 · Cited by 140
Metadata
- Authors
- Elasri, M. O., & Miller, R. V.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 1999-05
- Volume
- 65
- Issue
- 5
- Pages
- 2025-2031
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W2111749427
- Cited by
- 253
- References
- 1
- FWCI
- 1.52
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Elasri, M. O., & Miller, R. V. (1999). Study of the Response of a Biofilm Bacterial Community to UV Radiation. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.65.5.2025-2031.1999
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
