Untersuchungen an Crown-Gall

Rolf Beiderbeck
1970 Zeitschrift für Naturforschung. B, A journal of chemical sciences  
Concentrations of 10 µg/ml rifampicin reduce the growth of Agrobacterium tumefaciens by more than 90%, concentrations of 100 µg/ml prevent tumor formation in Kalanchoë daigremontiana by the same bacteria. A treatment with rifampicin does not irreversibly alter the bacteria; after removal of the drug bacterial propagation and the ability of tumor induction are restored. 0-24 h treatments of the plant wounds with rifampicin prior to infection prevent tumor formation completely. Addition of
more » ... Addition of rifampicin after infection inhibits tumor formation optimally if the drug is added only few hours after inoculation. 30 h after infection the bacteria-host-system is resistant against rifampicin. 100 μg/ml rifampicin do not influence the growth of already induced tumors.
doi:10.1515/znb-1970-0716 fatcat:s5ecbak5y5h3vhwuej7xdu2rpy