| Autor: | Valery P. Varlamov, S. V. Zinov'eva, Ozeretskovskaia Ol, G. I. Chalenko, A. V. Il’ina, N. G. Gerasimova, Vasiukova Ni, Il'inskaia Li, E. A. Perekhod |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
chemistry.chemical_classification
Reactive oxygen species biology fungi food and beverages biology.organism_classification Solanum tuberosum Applied Microbiology and Biotechnology Biochemistry Elicitor Chitosan chemistry.chemical_compound chemistry Enzymatic hydrolysis Botany Phytophthora infestans Meloidogyne incognita Root-knot nematode |
| Zdroj: | Applied Biochemistry and Microbiology. 37:103-109 |
| ISSN: | 0003-6838 |
| DOI: | 10.1023/a:1002865029994 |
| Popis: | Low-molecular-weight water-soluble chitosan (5 kDa) obtained after enzymatic hydrolysis of native crab chitosan was shown to display an elicitor activity by inducing the local and systemic resistance of Solanum tuberosum potato and Lycopesicon esculentum tomato to Phytophthora infestans and nematodes, respectively. 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. The activation of protective mechanisms in plant tissues inhibited the growth of taxonomically different pathogens (parasitic fungus Phytophthora infestans and root knot nematode Meloidogyne incognita). |
| Databáze: | OpenAIRE |
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