Lysogeny in Rhizobium Leguminosarum and R. Trifolii

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Seven lysogenic strains - three of Rhizobium Leguminosarum and four of R-trifolii - were identified among a total of 54 strains from these two species and R. phascoli. The R. leguminosarum strain may be multiply lysogenic; two of them also produce lethal agents resembling bacteriocins in their effects. Lysogeny was confirmed by standard criteria of UV-inducibility, self-immunity, and reproductive ability. Lysogenic conversion involving symbiotic characteristics was not observed. A minimum of six different temperate phage were identified. The host range includes strains of the above three rhizobial species, but not of R. mclilotii. Variation in host specificity of some phage … continued below

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Schwinghamer, E. A. & Reinhardt, D. J. February 1, 1963.

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Seven lysogenic strains - three of Rhizobium Leguminosarum and four of R-trifolii - were identified among a total of 54 strains from these two species and R. phascoli. The R. leguminosarum strain may be multiply lysogenic; two of them also produce lethal agents resembling bacteriocins in their effects. Lysogeny was confirmed by standard criteria of UV-inducibility, self-immunity, and reproductive ability. Lysogenic conversion involving symbiotic characteristics was not observed. A minimum of six different temperate phage were identified. The host range includes strains of the above three rhizobial species, but not of R. mclilotii. Variation in host specificity of some phage following host passage is under investigation.

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  • February 1, 1963

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Schwinghamer, E. A. & Reinhardt, D. J. Lysogeny in Rhizobium Leguminosarum and R. Trifolii, report, February 1, 1963; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1250516/: accessed April 19, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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