Mode of action of Bacillus pumilus in suppressing Pseudoperonospora cubensis (Berk and Curt) Rostow, the pathogen of downy mildew of cucumber [electronic resource].

Includes references.

Microscopic examinations by light and scanning electron microscopy of the cucumber downy mildew lesions treated by liquid culture of Bacil1us pumilus showed direct effects that appeared as loss in turger and osmolysis of sporangia and hyphae of Pseudoperonospora cubensis (Berk and Curt) Rostow. Surface activity of B. pumilus culture filtrate was verified on the red blood cells. The spectrum of Gas-Chromatography of the metabolites excreted by B. pumilus included various bands which mostly represented different antibiotic and surface-active compounds.

1