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Structure type: polymer chemical repeating unit
Compound class: O-polysaccharide
Contained glycoepitopes: IEDB_115136,IEDB_136105,IEDB_136906,IEDB_137472,IEDB_140630,IEDB_141794,IEDB_151528,IEDB_190606,IEDB_225177,IEDB_885823,SB_7

• Article ID: 3990
  Boyko AS, Konnova SA, Fedonenko YP, Zdorovenko EL, Smol'kina ON, Kachala VV, Ignatov VV "Structural and functional peculiarities of the lipopolysaccharide of Azospirillum brasilense SR55, isolated from the roots of Triticum durum" - Microbiological Research 166(7) (2011) 585-593
  

  Azospirillum brasilense SR55, isolated from the rhizosphere of Triticum durum, was classified as serogroup II on the basis of serological tests. Such serogroup affiliation is uncharacteristic of wheat-associated Azospirillum species. The lipid A of A. brasilense SR55 lipopolysaccharide contained 3-hydroxytetradecanoic, 3-hydroxyhexadecanoic, hexadecanoic and octadecenoic fatty acids. The structure of the lipopolysaccharide's O polysaccharide was established, with the branched octasaccharide repeating unit being represented by l-rhamnose, l-3-O-Me-rhamnose, d-galactose and d-glucuronic acid. The SR55 lipopolysaccharide induced deformations of wheat root hairs. The lipopolysaccharide was not involved in bacterial cell aggregation, but its use to pretreat wheat roots was conducive to cell adsorption. This study shows that Azospirillum bacteria can utilise their own lipopolysaccharide as a carbon source, which may give them an advantage in competitive natural environments.

  Lipopolysaccharide, Azospirillum brasilense, plant-microbe interaction

  NCBI PubMed ID: 21334868
  Publication DOI: 10.1016/j.micres.2011.01.002
  Journal NLM ID: 9437794
  Publisher: G. Fischer
  Correspondence: S.A. Konnova
  Institutions: Laboratory of Biochemistry, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, Saratov 410049, Russia.
  Methods: 13C NMR, 1H NMR, NMR-2D, sugar analysis, GLC
  
   
  
  Azospirillum brasilense SR55
  CSDB ID 26143 (all data & tools)
• Article ID: 4844
  Fedonenko YP, Sigida EN, Konnova SA, Ignatov VV "Structure and serology of O-antigens of nitrogen-fixing rhizobacteria of the genus Azospirillum" - Russian Chemical Bulletin = Izvestiia Akademii nauk. Seriia khimicheskaia 64(5) (2015) 1024-1031
  

  The review presents a discussion of the published data of 2002 to 2014 dealing with structural studies of O-specific polysaccharides, representatives of the Azospirillum diazotrophic rhizobacteria, summarizing the results of a series of authors? studies. Some general structures incorporated in O-specific polysaccharides responsible for classification of bacterial cultures into serogroups on the basis of immunochemical studies were characterized. The structures of O-specific polysaccharides of seven azospirillum strains identical to those of previously studied strains are presented in this review for the first time.

  lipopolysaccharides, O-specific polysaccharides, Structures, Azospirillum, O-antigenic determinants

  Publication DOI: 10.1007/s11172-015-0971-x
  Journal NLM ID: 100912060
  Publisher: New York: Consultants Bureau
  Correspondence: si_elena@mail.ru
  Institutions: Institute of Biochemistry and Physiology of Plants and Microorganisms Russian Academy of Sciences, 13 prosp. Entuziastov, 410049 Saratov, Russian Federation
  
   
  
  Azospirillum brasilense SR55
  CSDB ID 11164 (all data & tools)