Characterization of two antagonistic strains of Rahnella aquatilis isolated from soil in Egypt
Language English Country United States Media print
Document type Journal Article
PubMed
15058195
DOI
10.1007/bf02931517
Knihovny.cz E-resources
- MeSH
- Bacteriocins metabolism MeSH
- Cucumis sativus microbiology MeSH
- Microscopy, Electron MeSH
- Soil Microbiology * MeSH
- Rahnella classification metabolism ultrastructure MeSH
- Siderophores metabolism MeSH
- Xanthomonas campestris growth & development MeSH
- Publication type
- Journal Article MeSH
- Geographicals
- Egypt MeSH
- Names of Substances
- Bacteriocins MeSH
- Siderophores MeSH
In an attempt to obtain biological control agents for controlling bacterial spot of cucumber, over 250 bacterial strains were isolated from agricultural soil samples, collected from different localities in Giza Governorate (Egypt) and screened for in vitro antibiosis towards Xanthomonas campestris. Only 2 strains showed antagonistic activity. They and their culture filtrates restricted the growth of a number of G- and G(+)-indicator bacteria. On Chrome Azurol S agar, both strains exhibited a marked siderophore production. Biolog plates identified these strains as Rahnella aquatilis. Their characteristics were studied and compared with literature data on R. aquatilis. This antagonistic bacterium has not been previously isolated in Egypt.
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