Plant responses to nodulation factors.
The focus of research on signalling in Rhizobium-legume interactions has moved from understanding the structure and synthesis of rhizobially made Nod factors, towards an analysis of how they function in plants. Nod-factor-induced changes in ion fluxes across membranes, followed by establishment of an oscillation of intracellular Ca(2+) concentration, point to the involvement of a receptor-mediated signal transduction pathway. Progress towards the identification of components in this pathway is being made by identifying Nod-factor binding proteins, isolating plant mutants that are defective in signalling and analysing plant responses to Nod factors.
Downie
J A
JA
John Innes Centre, Colney, NR4 7UH, UK. downie@bbsrc.ac.uk
Walker
S A
SA
D002118:Calcium / Q000378:metabolism; D007887:Fabaceae / Q000235:genetics / Q000382:microbiology / Q000502:physiology*; D018506:Gene Expression Regulation, Plant; D008070:Lipopolysaccharides / Q000737:chemistry / Q000378:metabolism*; D010946:Plants, Medicinal; D012231:Rhizobium / Q000502:physiology*; D015398:Signal Transduction; D013559:Symbiosis
D008070:Lipopolysaccharides; D002118:Calcium