Lipopolysaccharides as determinants of serological variability in Pseudomonas corrugata

Article Abstract:

The biochemical, physiological and serological characteristics of 128 isolates of Pseudomonas corrugata from 10 countries and three hosts are analyzed with the AP150CHE system and with common diagnostic tests. Silver staining of polyacrylamide gels distinguish more than 10 lipopolysaccharide (LPS) patterns in 98 isolates. LPS are determinants of the serological variability. The geographical origin, or host, and the LPS patterns show no correlation. Correlation between LPS groups and serological reaction is studied.

Pseudomonas

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Epitope identification for a panel of anti-Sinorhizobium meliloti monoclonal antibodies and application to the analysis of K antigens and lipopolysaccharides from bacteroids

Article Abstract:

Research has identified epitopes for monoclonal antibodies (MAbs) generated against Sinorhizobium meliloti cells from extracted polysaccharides. Results demonstrate that K antigens produced by S. meliloti NRG247 bacteroid alter mobilities on polyacrylamide gels and that S. meliloti NRG185 bacteroid produce no K antigens.

International, Analysis, Physiological aspects, Monoclonal antibodies, Microbiological research, Antigenic determinants, Endophytes

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Lipopolysaccharides of Rhizobium etli strain G12 act in potato roots as an inducing agent of systemic resistance to infection by the cyst nematode Globodera pallida

Article Abstract:

Lipopolysaccharides (LPS) produced by Rhizobium etli can make potato roots resistant to the potato cyst nematode. LPS inhibited nematode infection of the roots when present in concentrations as low as 0.1 mg per ml.

Prevention, Pests, Biological control, Nematode diseases of plants, Nematode plant diseases

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