Journal of Stress Physiology & Biochemistry, Vol. 2, No. 1,
2006, pp. 4-9.
Original Text Copyright (cc) 2006 by Shafikova, Rymareva, Kopytchuk,
Epova, Romanenko
ORIGINAL
ARTICLE
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QueryDate : 2016-12-24
Cites : 0
EXTRACELLULAR
POLYSACCHARIDES OF POTATO RING ROT PATHOGEN
Abstract— Many bacteria, including
phytopathogenic ones produce
extracellular polysaccharides or exopolysaccharides which are universal
molecules. Causal agent of potato ring rot, Clavibacter
michiganensis subspecies
sepedonicus,
secretes exopolysaccharides which role in pathogenesis is poorly
investigated. The aim of our research is to ascertain the composition
and structure of Clavibacter
michiganensis subspecies sepedonicus exopolysaccharides.
Exopolysaccharides of Clavibacter
michiganensis subspecies sepedonicus
are determined to consist of 4-6 anionic and neutral components which
have molecular weights from <1 kDa to >700 kDa. Glucose is a
major monomer of polysaccharides and arabinose, rhamnose and mannose
are minor monomers. Glucose is present in α-Dglucopyranose and
β-D-glucopyranose configurations. Calcium is determined to be a
component of exopolysaccharides. Components of exopolysaccharides of
potato ring rot pathogen are probably capable to associate via calcium
ions and other ionic interactions that may result in a change of their
physiological activity. Further studies of Clavibacter
michiganensis subspecies
sepedonicus
exopolysaccharides composition and structure can serve a base for the
synthesis of their chemical analogues with elicitor action.
