Chitosan as a Component of Pea-Fusarium solani Interactions
Lee A. Hadwiger,Jean M. Beckman +1 more
TLDR
Chitosan, a polymer of beta-1,4-linked glucosamine residues with a strong affinity for DNA, was implicated in the pea pod-Fusarium solani interaction as an elicitor of phytoalexin production, an inhibitor of fungal growth and a chemical which can protect pea tissue from infection by F. solani f.Abstract:
Chitosan, a polymer of β-1,4-linked glucosamine residues with a strong affinity for DNA, was implicated in the pea pod-Fusarium solani interaction as an elicitor of phytoalexin production, an inhibitor of fungal growth and a chemical which can protect pea tissue from infection by F. solani f. sp. pisi. Purified Fusarium fungal cell walls can elicit phytoalexin production in pea pod tissue. Enzymes from acetone powders of pea tissue release eliciting components from the F. solani f. sp. phaseoli cell walls. Hydrochloric acid-hydrolyzed F. solani cell walls are about 20% glucosamine. The actual chitosan content of F. solani cell walls is about 1%. However, chitosan assays and histochemical observations indicate that chitosan content of F. solani spores and adjacent pea cells increases following inoculation. Dormant F. solani spores also accumulate chitosan. Concentrations of nitrous acid-cleaved chitosan as low as 0.9 microgram per milliliter and 3 micrograms per milliliter elicit phytoalexin induction and inhibit germination of F. solani macroconidia, respectively. When chitosan is applied to pea pod tissue with or prior to F. solani f. sp. pisi, the tissue is protected from infection.read more
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Food applications of chitin and chitosans
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Systemic acquired resistance
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Antifungal Hydrolases in Pea Tissue II. Inhibition of Fungal Growth by Combinations of Chitinase and β-1,3-Glucanase
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Chitosan: antimicrobial activity, interactions with food components and applicability as a coating on fruit and vegetables
TL;DR: In this article, the effects of chitosan coatings on controlling decay of minimally processed fruits and vegetables (strawberry and lettuce) were investigated. And the results showed that chitoshan had a deacetylation degree of 94% and a molecular weight of 43 kDa on different psychrotrophic spoilage organisms and food pathogens.
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Chitosan as a potential natural compound to control pre and postharvest diseases of horticultural commodities
Silvia Bautista-Baños,A. N. Hernández-Lauzardo,M. G. Velázquez-del Valle,Mónica Hernández-López,E. Ait Barka,Elsa Bosquez-Molina,Charles L. Wilson +6 more
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