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Effect of the molecular weight of chitosan on its antiviral activity in plants
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, and the degree of chitOSan-induced antiviral resistance increased as the molecular weight of chITosan decreased.
Modulation of Plant Resistance to Diseases by Water-Soluble Chitosan
Chitosan induced the accumulation of phytoalexins in tissues of host plants; decreased the total content; changed the composition of free sterols producing adverse effects on infesters; activated chitinases, β-glucanases, and lipoxygenases; and stimulated the generation of reactive oxygen species.
Effect of Chitosan on Systemic Viral Infection and Some Defense Responses in Potato Plants
It was found that, a day after treatment, the plants acquired a resistance to viral infection; subsequently, the resistance increased again; the extent of the resistance correlated with the callose content and the level of ribonuclease activity observed on the infection day.
Hydrolysis of Chitosan in Lactic Acid
The effects of molecular weight and the degree of acetylation on the hydrolysis of chitosan in dilute lactic acid were studied. It was demonstrated that the higher the values of both parameters, the
Galactosylated derivatives of low-molecular-weight chitosan: Obtaining and properties
Chitosan, a binary heteropolysaccharide consisting of 2-acetamide-2-deoxy-β-D-glucopyranose and 2-amino-2-deoxy-β-D-glucopyranose residues linked in different proportions via β-glycosidic bonds. The
Isolation and characterization of thermostable DNA polymerase of the hyperthermophilic archaeum Thermococcus litoralis Sh1AM
A new DNA polymerase was isolated from the strain Thermococcus litoralis Sh1AM, possessing the enzyme with the most promising properties, and characterized, and the main physicochemical and enzymatic properties are similar to the known DNA polymerases of family B.
PR Proteins in Plants Infested with the Root-Knot Nematode Meloidogyne incognita(Kofoid et White, 1919) Chitwood 1949
The role of β -1,3glucanase and chitinase in the interaction between cucumber and root-knot nematode and the results indicate that treatment with either of the elicitors caused a decrease in the degree of infestation of cucumber roots with nematodes.
Chitosan-based polyelectrolyte complexes: A review
The possibility of obtaining low-molecular-weight, water-soluble batches of chitosan, which differ in their degree of acetylation, is discussed, with emphasis on their use for binding nucleic acids into complexes.