Plant resistance suppressors in the pathosystem formed by potato and the causal agent of late blight

被引：7

作者：

Ozeretskovskaya, OL ^{[1
]}

Vasyukova, NI ^{[1
]}

Perekhod, EA ^{[1
]}

Chalenko, GI ^{[1
]}

Il'inskaya, LI ^{[1
]}

Gerasimova, NG ^{[1
]}

机构：

[1] Russian Acad Sci, Bach Inst Biochem, Moscow 117071, Russia

来源：

APPLIED BIOCHEMISTRY AND MICROBIOLOGY | 2001年 / 37卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

Causal Agent; Defense Response; Suppressor Effect; Late Blight; Solanum Tuberosum;

D O I：

10.1023/A:1010254225826

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The properties and effects of two plant resistance suppressors (1,3-beta -1,6-beta -glucan and a pentasaccharide of xyloglucan origin) involved in the pathosystem. of potato (Solanum tuberosum) and the causal agent of blight (Phytophthora infestans (Mont) de Bary) were compared. The microbial 1,3-beta -1,6-beta -glucan suppressed the defense response over a narrow concentration range (10(-2) M), whereas the plant pentasaccharide had a broad range of effective concentrations (10(-12) to 10(-6) M). In the pathosystem, of potato and the causal agent of late blight, the P-glucan caused a local and race-specific suppressor effect on the plant host defense response. In contrast, the pentasaccharide caused both local and systemic suppression of potato resistance and the presence of terminal fucosyl residue in the xyloglucan oligosaccharine played a decisive role in its effect. The recognition of both suppressors by potato cell membrane sites is discussed.

引用

页码：506 / 511

页数：6

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