Abstract
On the symbiotic plasmid pRL1JI from Rhizobium leguminosarum biovar viciae thirteen nodulation genes have been identified in five operons (nodD nodABCIJ nodFEL nodMNT and nodO). The products of most of these genes (nodABCFELMN) are involved in the biosynthesis of lipo-oligosaccharide nodulation factors, while the nodD gene product is involved in the regulation of the other four operons. Of the other nod gene products Nodl and NodJ are inner membrane proteins [1,2], NodO is a secreted protein [3] and NodT has a potential membrane transit peptide [1].Mutation of these genes had no observed effect on nodulation, although in the absence ofnodE nodO is essential for nodulation,[4].The R.I. viciae nodEgene product is involved in the formation of the unusual C18:4 acyl group present on Nod factors, whereas NodO forms cation-selective pores in membranes[5]. Such a role is compatible with its complementary function to lipo-oligosaccharide Nod factors that induce ion fluxes across plant membranes[6].
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References
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© 1994 Springer Science+Business Media Dordrecht
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Sutton, J.M. et al. (1994). Functional Analysis of Nodo and Nodt from Rhizobium Leguminosarum Biovar Viciae. In: Daniels, M.J., Downie, J.A., Osbourn, A.E. (eds) Advances in Molecular Genetics of Plant-Microbe Interactions. Current Plant Science and Biotechnology in Agriculture, vol 21. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0177-6_15
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DOI: https://doi.org/10.1007/978-94-011-0177-6_15
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