Modulation of Plant Resistance to Diseases by Water-Soluble Chitosan

被引：0
|
作者：
N. I. Vasyukova
S. V. Zinov'eva
L. I. Il'inskaya
E. A. Perekhod
G. I. Chalenko
N. G. Gerasimova
A. V. Il'ina
V. P. Varlamov
O. L. Ozeretskovskaya
机构：
[1] Russian Academy of Sciences,Bach Institute of Biochemistry
[2] Russian Academy of Sciences,Institute of Parasitology
[3] Russian Academy of Sciences,Bioinzheneriya Center
来源：
Applied Biochemistry and Microbiology | 2001年 / 37卷
关键词：
Hydrolysis; Reactive Oxygen Species; Chitosan; Host Plant; Plant Tissue;
D O I：
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中图分类号：
学科分类号：
摘要：
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).
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页码：103 / 109
页数：6
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