Genetic mapping of the chromosome of Rhizobium trifolii.
Cultures of the wild strain and auxotrophic mutants of Rhizobium trifolii T37 synchronized by means of phenylethanol have been mutagenized with nitrosoguanidine. Fifteen genetic markers were characterized in respect of their order and the time of replication based on the peaks of mutations of the genes. The time of R. trifolii chromosome replication was estimated using inhibitors of the initiation of DNA replication: rifampicin, chloramphenicol and phenylethanol. The replicative map of R. trifolii chromosome has been constructed. Taking into account the replicative map, linkages of the genes, and the bidirectional model of the Rhizobium chromosome replication, a circular genetic map of the chromosome of R. trifolii T37 was elaborated.[1]References
- Genetic mapping of the chromosome of Rhizobium trifolii. Zurkowski, W., Lorkiewicz, Z. Acta Microbiol. Pol. (1978) [Pubmed]
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