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Early legume responses to inoculation with Rhizobium sp NGR234

Boukli, N. M., Sunderasan, E., Bartsev, A., Hochstrasser, D., Perret, X., Bjourson, AJ, Krause, A. and Broughton, W. J. (2007) Early legume responses to inoculation with Rhizobium sp NGR234. JOURNAL OF PLANT PHYSIOLOGY, 164 (6). pp. 794-806. [Journal article]

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DOI: 10.1016/j.jplph.2006.04.013


Interactions between legumes and rhizobia are controlled by the sequential exchange of symbiotic signals. Two different techniques, 2D-PAGE electrophoresis and differential display were used to study the effects of rhizobial signals on legume development. Application of variously substituted lipo-oligo-saccharidic Nod-factors to roots of Vigna unguiculata resulted in changes in the phosphorylation patterns of microsomal proteins. Reliable amino-acid sequences were obtained for one Nod-factor enhanced protein which was highly homologous to the 57-kDa subunit from Arabidopsis thaliana vacuolar membrane H+-ATPase. Immuno-blotting techniques demonstrated that Nod-factors cause rapid and massive increases of this enzyme in treated roots, suggesting that H+-ATPases play symbiotic roles. Concomitantly, we used differential display (DD) techniques on mRNA isolated from root-hairs to analyse early root responses to NGR234. Significant matches of several DD clones to known sequences were found. Clone D2.62 was homologous to a multitude of receptor kinases including S receptor-like kinases of A. thaliana and clone D4.1 showed similarities to Lotus japonicus phosphatidylinositol transfer-like protein III and late nodulin 16. Independent confirmatory analyses of these differentially expressed clones indicated expression at very low levels. (c) 2006 Elsevier GmbH. All rights reserved.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Stratified Medicine
ID Code:1925
Deposited By: Mrs Caroline Adams
Deposited On:30 Nov 2009 09:24
Last Modified:14 Oct 2013 14:23

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