| Literature DB >> 28082413 |
Zhenchuan Ma1,2, Lin Zhu1,2, Tianqiao Song1,2, Yang Wang1,2, Qi Zhang1,2, Yeqiang Xia1,2, Min Qiu1,2, Yachun Lin1,2, Haiyang Li1,2, Liang Kong1,2, Yufeng Fang3, Wenwu Ye1,2, Yan Wang1,2, Suomeng Dong1,2, Xiaobo Zheng1,2, Brett M Tyler3, Yuanchao Wang4,2.
Abstract
The extracellular space (apoplast) of plant tissue represents a critical battleground between plants and attacking microbes. Here we show that a pathogen-secreted apoplastic xyloglucan-specific endoglucanase, PsXEG1, is a focus of this struggle in the Phytophthora sojae-soybean interaction. We show that soybean produces an apoplastic glucanase inhibitor protein, GmGIP1, that binds to PsXEG1 to block its contribution to virulence. P. sojae, however, secretes a paralogous PsXEG1-like protein, PsXLP1, that has lost enzyme activity but binds to GmGIP1 more tightly than does PsXEG1, thus freeing PsXEG1 to support P. sojae infection. The gene pair encoding PsXEG1 and PsXLP1 is conserved in many Phytophthora species, and the P. parasitica orthologs PpXEG1 and PpXLP1 have similar functions. Thus, this apoplastic decoy strategy may be widely used in Phytophthora pathosystems.Entities:
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Year: 2017 PMID： 28082413 DOI： 10.1126/science.aai7919
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728