Rhizobium symbiosis

J. S. Duhan, S. S. Dudeja, and A. L. Khurana. Siderophore production in relation to N fixation and iron uptake in pigeon pea-Rhizobium symbiosis. Folia Microbiol. 45 421 (1998). 

Long SR. 1996. Rhizobium symbiosis Node factors in perspective. Plant Cell 8 1885-1898. 

Verma, D.P.S. Nadler, K. (1984). Legumt-Rhizobium symbiosis Host s point of view. In Genes Involved in Plant-Microbe Interactions, ed. D.P.S. Verma T. Hohn, pp. 58-93. New York Springer-Verlag. 

Djordjevic MA, Weinman JJ. Factors determining host recognition in the dovsT-Rhizobium symbiosis. Aust. J. Plant Physiol. 1991 18 543-557. 

The reduction of the complex symbiotic N2-fixing system to the relative simplicity of an in vitro callus-Rhizobium symbiosis opens the door for understanding of the process of bacterial infection and induction of N2ase activity in symbionts. Previous studies have been restricted to whole plants or roots, while the in vitro system permits studies in a defined liquid medium with callus. Knowledge of the factors involved in the development of the symbiosis may permit its extension to major crops, such as wheat, which must now be provided with fertilizer nitrogen. 

Van der Drift, K. M. G. M., M. M. A. Olsthoom, L. R BruU, L. Blok-Tip, and J. E. Thomas-Oates. 1998. Mass spectrometric analysis of hpo-chitin ohgosaccharides signal molecules mediating the host-specific legume-rhizobium symbiosis. Mass Spectrom. Rev. 17 75-95. 

LaRue, T. A., Kneen, B. E., and Gartside, E. (1985). In Analysis of Plant Genes Involved in Legume-Rhizobium Symbiosis (R. Marcellin, ed.), pp. 39-48, OECO, Paris. 

Treatment of an extracellular polysaccharide of Rhizobium japonicum (an important factor for nitrogen-fixing symbiosis between bacteria and soybeans) with liquid HF (—40°, 30 min) gave mono- and oligo-saccharides involving 0- -D-glucopyranosyl-( 1 - 3)-C>-(4-0-acetyl-a-D-galactopyrano-syluronic acid)-(l— 3)-D-mannose and its 1-fluoride. 

C. Freiberg, R. Fellay, A. Bairoch, W. J. Broughton, A. Rosenthal, and X. Perret, Molecular basis of symbiosis between Rhizobium and legumes. Nature 387 394-401 (1997). 

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