Accumulation of Cell-Associated Beta(1-2)-Glucan in Rhizobium meliloti Strain GR4 in Response to Osmotic Potential. María J. Soto. Departmento de Microbiología, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, 18008, Granada, Spain. Viviana Lepek, José Olivares, and Nicolás Toro. Departmento de Microbiología, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, 18008, Granada, Spain.. MPMI 6:11-14. Accepted 30 September 1992. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1993.

High-osmolarity media strongly inhibit the in vivo accumulation of cell-associated glucans in Agrobacterium tumefaciens, Rhizobium meliloti, and Bradyrhizobium japonicum, as also occurs with the membrane-derived oligosaccharide (MDO) in Escherichia coli. However, we show here that in Rhizobium meliloti strain GR4 the level of cell-associated Beta(1-2)-glucan is not altered by the environmental osmotic conditions.