PIMAPK10, a Mitogen-Activated Protein Kinase (MAPK) in Peronophythora litchii, Is Required for Mycelial Growth, Sporulation, Laccase Activity, and Plant Infection
文献类型： 外文期刊
作者： Jiang, Liqun 1 ; Situ, Junjian 1 ; Deng, Yi Zhen 3 ; Wan, Lang 1 ; Xu, Dandan 1 ; Chen, Yubin 1 ; Xi, Pinggen 1 ; Jiang, 1 ;
作者机构： 1.South China Agr Univ, Guangdong Prov Key Lab Microbial Signals & Dis Co, Guangzhou, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Rice Res Inst, Guangdong Prov Key Lab New Technol Rice Breeding, Guangzhou, Guangdong, Peoples R China
3.South China Agr Univ, Integrat Microbiol Res Ctr, Guangzhou, Guangdong, Peoples R China
关键词： Peronophythora litchii; mitogen-activated protein kinase; gene silencing; pathogenicity; laccase activity
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）
ISSN： 1664-302X
年卷期： 2018 年 9 卷
页码：
收录情况： SCI
摘要： Mitogen-activated protein kinase (MAPK) pathways are ubiquitous and evolutionarily conserved signal transduction modules directing cellular respond to a diverse array of stimuli, in the eukaryotic organisms. In this study, PIMAPK10 was identified to encode a MAPK in Peronophythora litchii, the oomycete pathogen causing litchi downy blight disease. PIMAPK10, containing a specific and highly conserved dual phosphorylation lip sequence SEY (Serine-Glutamic-Tyrosine), represents a novel group of MAPKs as previously reported. Transcriptional profiling showed that PIMAPK10 expression was up-regulated in zoospore and cyst stages. To elucidate its function, the PIMAPK10 gene was silenced by stable transformation. PIMAPK10 silence did not impair oospore production, sporangium germination, zoospore encyst, or cyst germination but hindered hyphal growth, sporulation, pathogenicity, likely due to altering laccase activity. Over all, our results indicated that a MAPK encoded by PIMAPK10 gene in P. litchii is important for pathogenic development.
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