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Isolation of an Enterobacter agglomerans strain with inhibitory activity on Pseudomonas aeruginosa
1Departamento de Microbiología y Biología Celular, Facultad de Biología, Universidad de La Laguna, Tenerife, Spain.
Microbios
|January 1, 1992
Abstract:
Antagonism between Enterobacter agglomerans and Pseudomonas aeruginosa was due to an extracellular substance produced by E. agglomerans which accumulates in the culture medium. This substance was also toxic to Escherichia coli and Staphylococcus albus and its MIC for P. aeruginosa ranged between 7.8 and 3.9 micrograms/ml. However, when the extracts from the culture medium were irradiated from 2 h with white light (15 mW/cm2), the MIC was lower (3.9-1.9 micrograms/ml) suggesting that the active substance was a phototoxin.