Extracellular polysaccharides and polysaccharide-containing biopolymers from Azospirillum species: properties and the possible role in interaction with plant roots

This paper reviews the results obtained in studies of the extracellular polysaccharides, lipopolysaccharide-protein complexes, polysaccharide-lipid complexes, lipopolysaccharides, and O-specific polysaccharides from bacteria of the genus Azospirillum. On the basis of present knowledge, the possible...

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Bibliographic Details
Published in:FEMS Microbiology Letters 1998-08, Vol.165 (2), p.223-229
Main Authors: Skvortsov, Igor M., Ignatov, Vladimir V.
Format: Article
Language:eng ; rus
Subjects:
Azospirillum
Azospirillum - physiology
Azospirillum-plant root interaction
Carbohydrate Sequence
Extracellular polysaccharide
Fabaceae - microbiology
Fabaceae - physiology
Lipopolysaccharide
Molecular Sequence Data
O-specific polysaccharide
Plant Roots - microbiology
Plant Roots - physiology
Plants, Medicinal
Polysaccharide complex
Polysaccharides, Bacterial - chemistry
Polysaccharides, Bacterial - physiology
soil biology
soil science
Symbiosis
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Summary:This paper reviews the results obtained in studies of the extracellular polysaccharides, lipopolysaccharide-protein complexes, polysaccharide-lipid complexes, lipopolysaccharides, and O-specific polysaccharides from bacteria of the genus Azospirillum. On the basis of present knowledge, the possible roles of the extracellular polysaccharides and polysaccharide-containing complexes of azospirilla in interaction with the roots of plants are discussed. Some pieces of evidence are considered in light of the lectin hypothesis originally proposed for the legume- Rhizobium symbiosis. In the context of these views of Azospirillum-cereal associative pairs, a key process at the early stages of the interaction is the specific reaction of cereal root lectins with the extracellular polysaccharide components, containing N-acetyl- d-glucosamine as part of their structure.
ISSN:0378-1097
1574-6968
DOI:10.1016/S0378-1097(98)00273-0