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Control of Rhizoctonia solani on Cotton Seedlings with Pseudomonas fluorescens and With an Antibiotic Produced by the Bacterium
Abstract
A strain of Pseudomonas fluorescens antagonistic to Rhizoctonia solani was isolated from the rhizosphere of cotton seedlings. An antibiotic strongly inhibitory to R. solani was isolated from P. fluorescens cultures and identified as pyrrolnitrin (3-chloro-4-[2′-nitro-3′-chlorophenyl]-pyrrole). The antibiotic also inhibited growth of other fungi associated with the cotton seedling disease complex including: Thielaviopsis basicola, Alternaria sp., and Verticillium dahliae. A Fusarium sp. was only partially inhibited and Pythium ultimum was unaffected. Treating cottonseed with P. fluorescens or pyrrolnitrin at time of planting in R. solani-infested soil increased seedling survival from 30 to 79% and from 13 to 70%, respectively. Pyrrolnitrin persisted for up to 30 days in moist nonsterile soil with no measurable loss in activity.
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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
Biological Control of Soilborne Plant Pathogens in the Rhizosphere with Bacteria
Weller, D. M. (1988) · Annual Review of Phytopathology · doi:10.1146/annurev.py.26.090188.002115 · Cited by 1,763
Pseudomonas genomes: diverse and adaptable
Silby, M. W., Winstanley, C., Godfrey, S. A. C., Levy, S. B., & Jackson, R. W. (2011) · FEMS Microbiology Reviews · doi:10.1111/j.1574-6976.2011.00269.x · Cited by 960
Antibiotic production by bacterial biocontrol agents
Raaijmakers, J. M., Vlami, M., & de Souza, J. T. (2002) · Antonie van Leeuwenhoek · doi:10.1023/a:1020501420831 · Cited by 865
Plant Growth Promoting Rhizobacteria: Applications and Perspectives In Agriculture
Zahir, Z. A., Arshad, M., & Frankenberger, W. T. (2003) · Advances in Agronomy · doi:10.1016/s0065-2113(03)81003-9 · Cited by 566
Metadata
- Authors
- Howell, C. R., & Stipanovic, R. D.
- Venue
- Phytopathology®
- Publisher
- Scientific Societies
- Published
- 2025-08-01
- Volume
- 115
- Issue
- 8V
- Pages
- 480-482
- ISSN
- 0031-949X (ISSN-L)
- 1943-7684
- OpenAlex
- W1985598069
- Cited by
- 558
- References
- 0
- FWCI
- 25.84
- Type
- journal article
- Language
- en
- Open access
- closed
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- Howell, C. R., & Stipanovic, R. D. (2025). Control of Rhizoctonia solani on Cotton Seedlings with Pseudomonas fluorescens and With an Antibiotic Produced by the Bacterium. Phytopathology®. https://doi.org/10.1094/phyto-69-480
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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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