Waarnemingen omtrent den bacteriophaag bij Bac. danicus en B. radicicola

Abstract

Bacteriophages of Bacillus danicus and Bacterium radicicola were isolated from soil and root nodules. An extensive study was made on the effect of heat in the inactivation of bacteriophage of B. danicus. A chemical analysis of these cultures of B. danicus with or without bacteriophages showed a strong increase of amino and protein N in the supernatant of lysed cultures.Experiments with aseptically-grown clover plants proved that bacteriophages for B. radicicola were absent from the plant. Nodulation of the plant by B. radicicola was not reduced in the presence of bacteriophages