title: [Characterization of the lipopolysaccharides of serogroup II Azospirillum].
abstract: Lipopolysaccharides of six Azospirillum strains (A. brasilense SR50, SR80, SR88, SR109, SR111, SR115, and A. lipoferum SR 42) isolated from the rhizosphere of cereal plants of Saratov oblast, Russia and assigned to serogroup II by serological analysis were studied. In the lipid A fatty acid composition, the lipopolysaccharides under study were similar to those of other Azospirillum strains and were characterized by predominance of 3-hydroxytetradecanoic, 3-hydroxyhexadecanoic, and octadecenoic acids. Monosaccharide analysis of the O-specific polysaccharides (including determination of the absolute configurations, methylation analysis, and one- and two-dimensional NMR spectroscopy) revealed the presence of two types of repeating units in varying ratios. High degree of serological similarity between the strains under study was shown to result from the presence of repeating units with identical structure in their O antigens.
authors.forename: E N
authors.initials: EN
authors.lastname: Sigida
authors.forename: Iu P
authors.initials: IuP
authors.lastname: Fedonenko
authors.forename: É L
authors.initials: ÉL
authors.lastname: Zdorovenko
authors.forename: G L
authors.initials: GL
authors.lastname: Butygin
authors.forename: S A
authors.initials: SA
authors.lastname: Konnova
authors.forename: V V
authors.initials: VV
authors.lastname: Ignatov
mesh_terms: D016949:Azospirillum / Q000737:chemistry* / Q000378:metabolism; D005227:Fatty Acids / Q000737:chemistry* / Q000378:metabolism; D019081:O Antigens / Q000737:chemistry* / Q000378:metabolism; D058441:Rhizosphere; D012988:Soil Microbiology
chemical_list: D005227:Fatty Acids; D019081:O Antigens