The control of wheat Defense responses during infection with Bipolaris sorokiniana by chitooligosaccharides
The control of wheat Defense responses during infection with Bipolaris sorokiniana by chitooligosaccharides
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DOI：
10.1134/s1021443707010153
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发表时间：
2007-01-01
影响因子：
1.4
通讯作者：
Maksimov, I. V.
中科院分区：
文献类型：
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作者：
Burkhanova, G. F.;Yarullina, L. G.;Maksimov, I. V.
研究了分子质量为5-10kD、乙酰化度为65%的甲壳素低分子水溶性衍生物对不同抗性小麦植株过氧化物酶的表达及其分子异质性和植物激素含量的影响。植物侵染或CHOS处理诱导了阴离子过氧化物酶基因的表达和酶活性的提高，这一过程取决于小麦的抗性程度。在抗病品种中，它们的作用更为强烈。用CHOS处理敏感植物可以防止病原体诱导的细胞分裂素水平下降，从而模拟防御反应，这是抗性植物的特征。
We studied the effects of low-molecular-weight water-soluble derivatives of chitin, chitooligsaccharides (ChOS) with a mol wt of 5-10 kD and the degree of acetylation of 65% on expression and molecular heterogeneity of peroxidase and the content of phytohormones in wheat plants differing in their resistance to the causal agents of root rots. Plant infection or their treatment with ChOS induced expression of the gene for anionic peroxidase and enhanced enzyme activity, and these processes depended on the degree of wheat resistance. They were more intense in the resistant cultivar. Treatment of susceptible plants with ChOS prevented a pathogen-induced drop in the cytokinin level, thus simulating defensive responses, which are characteristic of the resistant plants.