Dissecting Symbiosis: Developments in Nod Factor Signal Transduction

The interaction between legumes and rhizobial bacteria results in the formation of a unique organ, the nodule, on roots of the host plant. The nodule has evolved to harbour the bacterial symbiont and provide conditions appropriate for the fixation of atmospheric nitrogen. Nod factor, generated by rh...

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Bibliographic Details
Published in:Annals of botany 2001-06, Vol.87 (6), p.709-718
Main Author: Oldroyd, Giles E.D.
Format: Article
Language:English
Subjects:
biochemical pathways
BOTANICAL BRIEFING
Calcium
Fabaceae
genes
genetic techniques and protocols
host plants
Infections
Legumes
molecular genetics
nitrogen fixation
Nod factor
Nodulation
oligosaccharides
plant proteins
Plant roots
Plants
Receptors
Review
Review, Nod factor, rhizobia, nodulation, signal transduction
rhizobia
Rhizobiaceae
Root hairs
root nodules
roots
Signal transduction
Symbiosis
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Summary:The interaction between legumes and rhizobial bacteria results in the formation of a unique organ, the nodule, on roots of the host plant. The nodule has evolved to harbour the bacterial symbiont and provide conditions appropriate for the fixation of atmospheric nitrogen. Nod factor, generated by rhizobia, is sufficient to activate many of the responses involved in the initiation of nodule development in the plant. Dissecting the Nod factor signal transduction pathway has been greatly aided by the adoption of genetically tractable model legumes. Recent studies have identified a number of genes involved in this pathway and candidate proteins for the Nod factor receptor. Furthermore, a plethora of cellular responses have been linked with Nod factor perception. This Botanical Briefing covers recent advances in the dissection of Nod factor signal transduction in the plant.
ISSN:0305-7364
1095-8290
DOI:10.1006/anbo.2001.1410