Transformation in Rhizobium japonicum |
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Authors: | Hana Marečková |
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Institution: | (1) Department of Soil Microbiology, Institute for Plant Nutrition, Prague-Ruzyn, Czechoslovakia |
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Abstract: | Summary The transformation of streptomycin resistance in Rhizobium japonicum was studied. The susceptible strain 211 was selected from sixty strains and one step mutant resistant to streptomycin in concentration 1 mg per 1 ml was used as the donor. The peak of the competence curve appeared at the ninth hour of growth; the frequency, when the homologous strain had been used was 0.01 p.c. The transformed resistance was of the same level as in the donor strain.This investigation forms part of a contribution prepared by the Czechoslovak National Committee for the International Biological Programme (Section PP: Production Processes). |
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