Abstract
The effect of the molecular weight of chitosan on its ability to suppress systemic infection of bean mild mosaic virus in bean (Phasoleus 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 microg/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.
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Claims 5
Claim · model-written summary
Chitosan fractions inhibited virus accumulation in bean.
- Taxon
- beane0
- Treatment
- treatments of bean plants with these fractionse0
- Interactor
- bean mild mosaic virusBean mild mosaic viruse1pathogene0
- Outcome
- virus accumulatione0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
e0“the treatments of bean plants with these fractions (chitosan concentration, 10 or 100 microg/ml) inhibited virus accumulation and systemic propagation.”
e1“bean mild mosaic virus in bean (Phasoleus vulgaris L.) plants”
Claim · model-written summary
Chitosan fractions inhibited systemic virus propagation in bean.
- Taxon
- beane0
- Treatment
- treatments of bean plants with these fractionse0
- Interactor
- bean mild mosaic virusBean mild mosaic viruse1pathogene0
- Outcome
- systemic propagatione0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
e0“the treatments of bean plants with these fractions (chitosan concentration, 10 or 100 microg/ml) inhibited virus accumulation and systemic propagation.”
e1“bean mild mosaic virus in bean (Phasoleus vulgaris L.) plants”
Claim · model-written summary
Antiviral resistance increased as chitosan molecular weight decreased.
Verbatim
e0“The degree of chitosan-induced antiviral resistance increased as the molecular weight of chitosan decreased.”
e1“bean mild mosaic virus in bean (Phasoleus vulgaris L.) plants”
Claim · model-written summary
Glucosamine showed no antiviral activity.
Not reportedComparator
Verbatim
e0“The monomers comprising the chitosan molecule-glucosamine and N-acetylglucosamine--exhibited no antiviral activity.”
e1“bean mild mosaic virus in bean (Phasoleus vulgaris L.) plants”
Claim · model-written summary
N-acetylglucosamine showed no antiviral activity.
- Taxon
- beane1
- Treatment
- N-acetylglucosaminee0
- Outcome
- antiviral activitye0
- Direction
- no antiviral activitye0
Not reportedComparator
Verbatim
e0“The monomers comprising the chitosan molecule-glucosamine and N-acetylglucosamine--exhibited no antiviral activity.”
e1“bean mild mosaic virus in bean (Phasoleus vulgaris L.) plants”
The same questions in other papers
glucosamine · molecular: metabolites · Phaseolus vulgaris (common bean)Positive and negative results
1 in the opposite direction
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.