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- Publisher
- Springer Journals
- Copyright
- Copyright © 2006 by MAIK “Nauka/Interperiodica”
- Subject
- Life Sciences; Medical Microbiology; Biochemistry, general; Microbiology
- ISSN
- 0003-6838
- eISSN
- 1608-3024
- DOI
- 10.1134/S0003683806020165
- Publisher site
- See Article on Publisher Site
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 100 μg/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.
Journal
Applied Biochemistry and Microbiology – Springer Journals
Published: Mar 22, 2006