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Evaluation of Biological and Physical Protection against Nuclease Degradation of Clay-Bound Plasmid DNA
Open accessAbstract
In order to determine the mechanisms involved in the persistence of extracellular DNA in soils and to monitor whether bacterial transformation could occur in such an environment, we developed artificial models composed of plasmid DNA adsorbed on clay particles. We determined that clay-bound DNA submitted to an increasing range of nuclease concentrations was physically protected. The protection mechanism was mainly related to the adsorption of the nuclease on the clay mineral. The biological potential of the resulting DNA was monitored by transforming the naturally competent proteobacterium Acinetobacter sp. strain BD413, allowing us to demonstrate that adsorbed DNA was only partially available for transformation. This part of the clay-bound DNA which was available for bacteria, was also accessible to nucleases, while the remaining fraction escaped both transformation and degradation. Finally, transformation efficiency was related to the perpetuation mechanism, with homologous recombination being less sensitive to nucleases than autonomous replication, which requires intact molecules.
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Cited by
Environmental Conditions Influence eDNA Persistence in Aquatic Systems
Barnes, M. A., Turner, C. R., Jerde, C. L., Renshaw, M. A., Chadderton, W. L., & Lodge, D. M. (2014) · Environmental Science & Technology · doi:10.1021/es404734p · Cited by 939
Mao, D., Luo, Y., Mathieu, J., Wang, Q., Feng, L., Mu, Q., Feng, C., & Alvarez, P. J. J. (2014) · Environmental Science & Technology · doi:10.1021/es404280v · Cited by 508
Fungal involvement in bioweathering and biotransformation of rocks and minerals
Burford, E. P., Fomina, M., & Gadd, G. M. (2003) · Mineralogical Magazine · doi:10.1180/0026461036760154 · Cited by 392
Gardner, C. M., & Gunsch, C. K. (2017) · Chemosphere · doi:10.1016/j.chemosphere.2017.02.030 · Cited by 62
Metadata
- Authors
- Demanèche, S., Jocteur-Monrozier, L., Quiquampoix, H., & Simonet, P.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 2001-01
- Volume
- 67
- Issue
- 1
- Pages
- 293-299
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W2111846867
- Cited by
- 231
- References
- 0
- FWCI
- 7.79
- Type
- journal article
- Language
- en
- Open access
- green
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- Demanèche, S., Jocteur-Monrozier, L., Quiquampoix, H., & Simonet, P. (2001). Evaluation of Biological and Physical Protection against Nuclease Degradation of Clay-Bound Plasmid DNA. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.67.1.293-299.2001
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