文献类型： 外文期刊
作者： Li, Yingbo 1 ; Li, Qingwei 1 ; Guo, Guimei 1 ; He, Ting 1 ; Gao, Runhong 1 ; Faheem, Muhammad 2 ; Huang, Jianhua 1 ; Lu, 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Biotech Res Inst, Key Lab Agr Genet & Breeding, Shanghai 201106, Peoples R China
2.Barani Agr Res Inst, Chakwal 48800, Pakistan
关键词： barley; SERK; powdery mildew; transient overexpression
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）
ISSN： 1422-0067
年卷期： 2018 年 19 卷 4 期
页码：
收录情况： SCI
摘要： Somatic embryogenesis receptor-like kinases (SERKs) play an essential role in plant response to pathogen infection. Here we identified three SERK genes (HvSERK1/2/3) from barley, and aimed to determine their implication in defense responses to barley powdery mildew (Bgh). Although HvSERK1/2/3 share the characteristic domains of the SERK family, only HvSERK2 was significantly induced in barley leaves during Bgh infection. The expression of HvSERK2 was rapidly induced by hydrogen peroxide (H2O2) treatment, but not by treatment with salicylic acid (SA), methyl jasmonate (MeJA), ethephon (ETH), or abscisic acid (ABA). Bioinformatics analysis of the cloned HvSERK2 promoter revealed that it contains several elements responsible for defense responses against pathogens. Promoter functional analysis showed that the HvSERK2 promoter was induced by Bgh and H2O2. Subcellular localization analysis of HvSERK2 indicated that it is mainly located on the plasma membrane. Transient overexpression of HvSERK2 in epidermal cells of the susceptible barley cultivar Hua 30 reduced the Bgh haustorium index from 58.6% to 43.2%. This study suggests that the HvSERK2 gene plays a positive role in the improvement of barley resistance to powdery mildew, and provides new insight into the function of SERK genes in the biotic stress response of plants.
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