Abstract
THE surface carbohydrates of Rhizobium, including both the lipopolysaccharide and the extracellular polysaccharide, are thought to participate in the infection and nodulation of legumes by these Gram-negative bacteria1–3. We report here the isolation of a mutant of Rhizobium leguminosarum which produces diminished amounts of extracellular polysaccharide (that is, the carbohydrate material present in cell-free filtrates of bacterial cultures) and which fails to nodulate pea, its normal host.
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SANDERS, R., CARLSON, R. & ALBERSHEIM, P. A Rhizobium mutant incapable of nodulation and normal polysaccharide secretion. Nature 271, 240–242 (1978). https://doi.org/10.1038/271240a0
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DOI: https://doi.org/10.1038/271240a0
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