Functional Analysis of Pcipg2 From the Straminopilous Plant Pathogen Phytophthora capsici

文献类型： 外文期刊

第一作者： Sun, Wen Xiu

作者： Sun, Wen Xiu;Jia, Yong Jian;Feng, Bao Zhen;Zhu, Xiao Ping;Zhang, Xiu Guo;O'Neill, Nichole R.;Xie, Bing Yan

作者机构：

关键词： pcipg2;straminopile pathogen;virulence;PGs activity;pathogenesis-related protein

期刊名称：GENESIS （ 影响因子：2.487； 五年影响因子：2.63 ）

ISSN： 1526-954X

年卷期： 2009 年 47 卷 8 期

页码：

收录情况： SCI

摘要： Phytophthora capsici causes serious diseases in numerous crop plants. Polygalacturonases (PGs) are cell wall-degrading enzymes that play an important role in pathogenesis in straminopilous pathogens. To understand PGs as they relate to the virulence of P capsici, Pcipg2 was identified from a genomic library of a highly virulent P capsici strain. Pcipg2 was strongly expressed during symptom development after the inoculation of pepper leaves with P capsici. The wild protein (PCIPGII) was obtained from the expression of pcipg2 and found that increasing activity of PGs in PCIPGII-treated pepper leaves was consistent with increasing symptom development. Asp residues in active sites within pcipg2 affected PCIPGII activity or its virulence on pepper leaves. Results show that pcipg2 is an important gene among pcipg genes, and illustrate the benefit of analyzing mechanisms of pathogenicity during the period of host/parasite interaction. genesis 47:535-544, 2009. (C) 2009 Wiley-Liss, Inc.

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