ISSN:
1573-0972
Keywords:
Chitinase
;
fatty acid synthesis
;
lipochitooligosaccharide signal
;
NodA
;
nodulation genes
;
root development
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract During the past five years the structure of nodulation signals from more than a dozen different Rhizobium species has been elucidated. In addition, the role of numerous nod genes in the biosynthesis of the lipooligosaccharides has been identified. This review discusses how Nod signal structure is determined by the specificity of the various biosynthetic steps and how this influences variation in host specificity. Until recently, it appeared that the decorations of a common lipochitooligosaccharide core determine the host-specific recognition of the signals, possibly via specific receptors in the host plant cell. A number of recent publications, however, suggest that beyond the interaction of Nod signals with a putative receptor, certain structural features of Nod factors are involved in controlling the concentration of the signals during their uptake by the root tissue.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00364678
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