Salivary Protein 1 of Brown Planthopper Is Required for Survival and Induces Immunity Response in Plants
文献类型： 外文期刊
作者： Huang, Jin 1 ; Zhang, Ning 1 ; Shan, Junhan 1 ; Peng, Yaxin 1 ; Guo, Jianping 1 ; Zhou, Cong 1 ; Shi, Shaojie 1 ; Zheng, 1 ;
作者机构： 1.Wuhan Univ, Coll Life Sci, State Key Lab Hybrid Rice, Wuhan, Peoples R China
2.Hunan Acad Agr Sci, Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha, Peoples R China
关键词： brown planthopper; salivary proteins; RNA interference; insect-plant interaction; plant defense responses
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2020 年 11 卷
页码：
收录情况： SCI
摘要： The brown planthopper (BPH),Nilaparvata lugensStal, is one of the major pests of rice. It uses its stylet to penetrate rice phloem, feeding on rice sap and causing direct damage to rice or even plant death. During the feeding process, BPHs secrete saliva into plant tissues, which plays crucial roles in the plant-insect interactions. However, little is known about how the salivary proteins secreted by BPH affect feeding ability and how they induce plant immune responses. Here, we identified anN. lugensSalivary Protein 1 (NlSP1) by screening salivary proteome and characterized its functions in BPH and plants. NlSP1 induces cell death, H(2)O(2)accumulation, the expression of defense-related genes, and callose depositionin planta. The active region of NlSP1 that induces plant cell death is located in its N-terminal region. Inhibition ofNlSP1expression in BPHs reduced their feeding ability and had a lethal effect on them. Most importantly, we demonstrated that NlSP1 was able to be secreted into rice plant during feeding process and form a complex with certain interacting partner of rice. These results provide a detailed characterization of a salivary protein from BPHs and offers new insights into our understanding of rice-BPH interaction.
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