Abstract
DURING a survey of the extracellular polysaccharides of Rhizobium species1, six of seven strains of Rhizobium trifolii were shown to include a component which moved very quickly in acid solvents (R glucose about 3) and, on spraying with p-anisidine hydrochloride, rapidly developed in the cold a bright pink colour. I have obtained evidence that this compound is 4-O-methyl glucuronic acid. Seven strains of R. meliloti and the one of R. phaseoli that was tested lacked this component which has however since been found in one of two strains of R. leguminosarum.
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HUMPHREY, B. Occurrence of 4-O-Methyl Glucuronic Acid in Rhizobium Gums. Nature 184, 1802 (1959). https://doi.org/10.1038/1841802a0
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DOI: https://doi.org/10.1038/1841802a0
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