Applied Biochemistry and Microbiology (2006) 42, 200-203

S.N. Kulikov, S.N. Chirkov, A.V. Il'ina, S.A. Lopatin and V.P. Varlamov (2006)
Effect of the molecular weight of chitosan on its antiviral activity in plants
Applied Biochemistry and Microbiology 42 (2), 200-203
Abstract: The effect of the molecular weight of chitosan on its ability to suppress systemic infection of bean mild mosaic virus in bean (Phaseolus vulgaris L.) plants was studied. The enzymatic hydrolysate of low-molecular-weight chitosan was successively fractionated by ultrafiltration through membranes with decreasing pore size. In total, four chitosan fractions with a weight-average molecular weight varying from 1.2 to 40.4 kDa were obtained. It was shown that the treatments of bean plants with these fractions (chitosan concentration, 10 or 100g/ml) inhibited virus accumulation and systemic propagation. The degree of chitosan-induced antiviral resistance increased as the molecular weight of chitosan decreased. The monomers comprising the chitosan molecule-glucosamine and N-acetylglucosamine-exhibited no antiviral activity.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: English)
Link to article at publishers website
Database assignments for author(s): Sergei Chirkov

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bean mild mosaic virus	Beans (Phaseolus)