ISSN:
1573-0972
Keywords:
Infection
;
nodulation
;
Phaseolus vulgaris
;
Rhizobium
;
signalling
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract During the Rhizobium–legume symbiosis, a mutual exchange of signalling molecules occurs. Distinct oligo- and polysaccharides are involved in nodule formation and rhizobial invasion. The common bean is a promiscuous host plant that can be nodulated by a wide range of rhizobia. Reviewing the literature on nodulation suggests that the Nod factor oligosaccharide backbone of bean-nodulating rhizobia does not require a specific attached group, except for the acyl chain at the non-reducing end. However, in Rhizobium strains that elicit nitrogen-fixing nodules on Phaseolus vulgaris and that produce methylated Nod factors, NodS mediated decorations are indispensable for invasion and/or subsequent nitrogen-fixation. Finally, we present a model that links the pathways for methylation and sulphation in nodule signalling and invasion processes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008830809457
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