Abstract
Agrobacterium tumefaciens C58 forms “plaques” during layer cultivation. The “plaques” were shown not to be caused by the presence of a temperate bacteriophage or by random contamination. The “plaques” and their central microcolonies were used to repeatedly isolate cultures producing an antibiotic substance against the original strainA. tumefaciens C58, other nopaline strains, some octopine strains ofA. tumefaciens and some strains of the related genusRhizobium. The substance is thus a bacteriocin; in analogy to agrocins 84 and D286 it was named agrocin C58. The agrocin is not inactivated by trypsin. Its production by strain C58 was found only on cultivation on solid but not liquid media. The producing isolate ofA. tumefaciens C58 (strain C58i2) contains neither plasmid pTiC58 nor the plasmid analogous to pAgK84 which controls the production of agrocin 84 inA. radiobacter K84.
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Nečásek, J., Dusbábková, J. & Vlasák, J. Bacteriocin production inAgrobacterium tumefaciens . Folia Microbiol 30, 353–358 (1985). https://doi.org/10.1007/BF02927590
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DOI: https://doi.org/10.1007/BF02927590