Characterization of Sym plasmids of Rhizobium leguminosarum strains able to nodulate Pisum sativum cv Afghanistan |
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Authors: | J. H. E. Nash S. Ma V. N. Iyer |
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Affiliation: | (1) Department of Biology, Carleton University, K1S 5B6 Ottawa, Ontario, Canada |
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Abstract: | Rhizobium leguminosarum strains that can form nodules on Pisum sativum cv. Afghanistan have been reported as uncommon in Europe, North America and Africa [11, 12]. The organization of the nodulation regions of the symbiotic plasmids of five strains of R. leguminosarum originating from Denmark [9], which can nodulate P. sativum cv. Afghanistan, was compared with that of a Turkish strain (TOM [18]) by DNA hybridizations. Four of the five Danish strains were found to be very similar to the Turkish strain with respect to the overall organizations of their respective nodulation regions. |
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Keywords: | host specificity nod DNA homology nodulation genes Rhizobium leguminosarum symbiotic plasmids |
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