Abstract
The Rhizobium genome can be considered as a complex structure, formed by the chromosome and high molecular weight plasmids, that contains a large amount of reiterated DNA sequences and presents frequent rearrangements. A general approach to detect reiterated DNA sequences estimated in Rhizobium etli the presence of 700 reiterated elements belonging to 200 different families; high levels of DNA reiteration were also observed in R. meliloti and in Agrobacterium tumefaciens (Flores et al, 1987). This degree of DNA reiteration is unusual among bacteria; only in Archaebacteria and in Streptomyces such large amounts of reiterated DNA sequences have been shown (Hopwood, Kieser, 1990; Krawiec, Riley, 1990). Independent of its specific biological significance, reiterated DNA sequences function as sites for homologous recombination resulting in genomic rearrangements.
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© 1995 Springer Science+Business Media Dordrecht
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Palacios, R., Castillo, M., Flores, M., Hernandez, G., Mavingui, P., Romero, D. (1995). Dynamics of the Rhizobium Genome . In: Tikhonovich, I.A., Provorov, N.A., Romanov, V.I., Newton, W.E. (eds) Nitrogen Fixation: Fundamentals and Applications. Current Plant Science and Biotechnology in Agriculture, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0379-4_41
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DOI: https://doi.org/10.1007/978-94-011-0379-4_41
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