The high-affinity phosphodiesterase PcPdeH is involved in the polarized growth and pathogenicity of Phytophthora capsici
文献类型： 外文期刊
作者： Li, X. 1 ; Liu, Yong 1 ; Tan, Xinqiu 1 ; Li, Delong 3 ; Yang, Xinyu 4 ; Zhang, Xin 2 ; Zhang, Deyong 1 ;
作者机构： 1.Hunan Univ, Grad Coll, Longping Branch, Changsha 410125, Peoples R China
2.Hunan Acad Agr Sci, Hunan Plant Protect Inst, Changsha 410125, Peoples R China
3.Qingdao Agr Univ, Coll Plant Hlth & Med, Key Lab Integrated Crop Pest Management Shandong, Qingdao 266109, Peoples R China
4.Shenyang Agr Univ, Plant Protect Coll, Shenyang 110866, Peoples R China
关键词： cAMP phosphodiesterases; Cyst germination; Oomycete; Virulence
期刊名称：FUNGAL BIOLOGY （ 影响因子：3.099； 五年影响因子：3.364 ）
ISSN： 1878-6146
年卷期： 2020 年 124 卷 3-4 期
页码：
收录情况： SCI
摘要： The cAMP signaling pathway has been shown to be important in controlling morphological changes and pathogenicity in plant pathogens. In the present study, we identified PcPdeH, a gene encoding a high-affinity phosphodiesterase (PDE), which is a key regulator of the cAMP signaling pathway. To elucidate the function of PcPdeH, PcPdeH-knockout mutants were obtained using a type II CRISPR/Cas9 system in Phytophthora capsici. The knockout transformants of PcPdeH showed vegetative growth defects and abnormal cyst germination. Infection assays indicated that compared with the wild type, PcPdeH-knockout mutants showed significantly reduced virulence on pepper and tobacco leaves and exhibited increased (1.5-2-fold) cAMP levels relative to the wild-type and CK strains. Based on these phenotypic features, we propose that PcPdeH is crucial for vegetative growth, cyst germination and pathogenicity in P. capsici. (C) 2020 The Author(s). Published by Elsevier Ltd on behalf of British Mycological Society.
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