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Amplification of the housekeeping sigma factor in Pseudomonas fluorescens CHA0 enhances antibiotic production and improves biocontrol abilities
Open accessAbstract
Pseudomonas fluorescens CHA0 produces a variety of secondary metabolites, in particular the antibiotics pyoluteorin and 2,4-diacetylphloroglucinol, and protects various plants from diseases caused by soilborne pathogenic fungi. The rpoD gene encoding the housekeeping sigma factor sigma 70 of P. fluorescens was sequenced. The deduced RpoD protein showed 83% identity with RpoD of Pseudomonas aeruginosa and 67% identity with RpoD of Escherichia coli. Attempts to inactivate the single chromosomal rpoD gene of strain CHA0 were unsuccessful, indicating an essential role of this gene. When rpoD was carried by an IncP vector in strain CHA0, the production of both antibiotics was increased severalfold and, in parallel, protection of cucumber against disease caused by Pythium ultimum was improved, in comparison with strain CHA0.
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Citations
Cited by
Biological control of soil-borne pathogens by fluorescent pseudomonads
Haas, D., & Défago, G. (2005) · Nature Reviews Microbiology · doi:10.1038/nrmicro1129 · Cited by 2,598
Self-citationMicrobial interactions and biocontrol in the rhizosphere
Whipps, J. M. (2001) · Journal of Experimental Botany · doi:10.1093/jexbot/52.suppl_1.487 · Cited by 1,934
Biocontrol of Soilborne Plant Pathogens.
Handelsman, J., & Stabb, E. V. (1996) · The Plant Cell · doi:10.1105/tpc.8.10.1855 · Cited by 624
Duffy, B. K., & Défago, G. (1999) · Applied and Environmental Microbiology · doi:10.1128/aem.65.6.2429-2438.1999 · Cited by 486
Schnider-Keel, U., Seematter, A., Maurhofer, M., Blumer, C., Duffy, B., Gigot-Bonnefoy, C., Reimmann, C., Notz, R., Défago, G., Haas, D., et al. (2000) · Journal of Bacteriology · doi:10.1128/jb.182.5.1215-1225.2000 · Cited by 339
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Metadata
- Authors
- Schnider, U., Keel, C., Blumer, C., Troxler, J., Défago, G., & Haas, D.
- Venue
- Journal of Bacteriology
- Publisher
- American Society for Microbiology
- Published
- 1995-09
- Volume
- 177
- Issue
- 18
- Pages
- 5387-5392
- ISSN
- 0021-9193 (ISSN-L)
- 1098-5530
- OpenAlex
- W2098910375
- Cited by
- 178
- References
- 0
- FWCI
- 12.11
- Type
- journal article
- Language
- en
- Open access
- green
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- Schnider, U., Keel, C., Blumer, C., Troxler, J., Défago, G., & Haas, D. (1995). Amplification of the housekeeping sigma factor in Pseudomonas fluorescens CHA0 enhances antibiotic production and improves biocontrol abilities. Journal of Bacteriology. https://doi.org/10.1128/jb.177.18.5387-5392.1995
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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