Protein Elicitor PemG1 from Magnaporthe grisea Induces Systemic Acquired Resistance (SAR) in Plants

doi:10.1094/MPMI-01-11-0003

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	Protein Elicitor PemG1 from Magnaporthe grisea Induces Systemic Acquired Resistance (SAR) in Plants
	Peng, Dong-Hai 1; Qiu, De-Wen 2; Ruan, Li-Fang 1; Zhou, Chen-Fei 1; Sun, Ming 1
刊名	MOLECULAR PLANT-MICROBE INTERACTIONS
	2011
卷号	24 期号:10 页码:1239-1246
ISSN号	0894-0282
DOI	10.1094/MPMI-01-11-0003
通讯作者	Peng, Dong-Hai
英文摘要	Elicitors can stimulate defense responses in plants and have become a popular strategy in plant disease control. Previously, we isolated a novel protein elicitor, PemG1, from Magnaporthe grisea. In the present study, PemG1 protein expressed in and purified from Escherichia coli improved resistance of rice and Arabidopsis to bacterial infection, induced transient expression of pathogenesis-related (PR) genes, and increased accumulation of hydrogen peroxide in rice. The effects of PemG1 on disease resistance and PR gene expression were mobilized systemically throughout the rice plant and persisted for more than 28 days. PemG1-induced accumulation of OsPR-la in rice was prevented by the calcium channel blockers LaCl(3), BAPTA, EGTA, W7, and TFP. Arabidopsis mutants that are insensitive to jasmonic acid (JA) and ethylene showed increased resistance to bacterial infection after PemG1 treatment but PemG1 did not affect resistance of mutants with an impaired salicylic acid (SA) transduction pathway. In rice, PemG1 induced overexpressions of the SA signal-related genes (OsEDS1, OsPAL1, and OsNH1) but not the JA pathway-related genes (0sLOX2 and OsAOS2). Our findings reveal that PemG1 protein can function as an activator of plant disease resistance, and the PemG1-mediated systemic acquired resistance is modulated by SA- and Ca(2+)-related signaling pathways.
学科主题	Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Plant Sciences ; BIOCHEMISTRY & MOLECULAR BIOLOGY ; BIOTECHNOLOGY & APPLIED MICROBIOLOGY ; PLANT SCIENCES
语种	英语
出版者	AMER PHYTOPATHOLOGICAL SOC
WOS记录号	WOS:000294980500011
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/12327]
专题	植物保护研究所
作者单位	1.Huazhong Agr Univ, Coll Life Sci & Technol, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China 2.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Peng, Dong-Hai,Qiu, De-Wen,Ruan, Li-Fang,et al. Protein Elicitor PemG1 from Magnaporthe grisea Induces Systemic Acquired Resistance (SAR) in Plants[J]. MOLECULAR PLANT-MICROBE INTERACTIONS,2011,24(10):1239-1246.
APA	Peng, Dong-Hai,Qiu, De-Wen,Ruan, Li-Fang,Zhou, Chen-Fei,&Sun, Ming.(2011).Protein Elicitor PemG1 from Magnaporthe grisea Induces Systemic Acquired Resistance (SAR) in Plants.MOLECULAR PLANT-MICROBE INTERACTIONS,24(10),1239-1246.
MLA	Peng, Dong-Hai,et al."Protein Elicitor PemG1 from Magnaporthe grisea Induces Systemic Acquired Resistance (SAR) in Plants".MOLECULAR PLANT-MICROBE INTERACTIONS 24.10(2011):1239-1246.