Abstract
Rhizobia are soil bacteria which can infect specifically the roots of leguminous hosts and elicit the formation of root nodules in which they reduce dinitrogen into ammonia. The degree of specificity of this relationship is extremely varied. Some tropical strains can nodulate and fix nitrogen on a large number of genera belonging to various tribes of Leguminosae and even on the non-legume genus Parasponia. On the other hand Rhizobium meliloti strains are reported to have a very limited host range : each strain can nodulate effectively only some species of Medicago, Melilotus and Trigonella (see the review of Long 1984). R. meliloti is thus a suitable organism with which to investigate the genetic and molecular basis of a highly specific plant-bacteria interaction.
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© 1986 Springer-Verlag Berlin Heidelberg
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Debellé, F. et al. (1986). Respective Roles of Common and Specific Rhizobium meliloti nod Genes in the Control of Lucerne Infection. In: Lugtenberg, B. (eds) Recognition in Microbe-Plant Symbiotic and Pathogenic Interactions. NATO ASI Series, vol 4. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-71652-2_2
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DOI: https://doi.org/10.1007/978-3-642-71652-2_2
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