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Egg-associated secretions from the brown planthopper (Nilaparvata lugens) activate rice immune responses

文献类型： 外文期刊

作者： Li, Jing 1 ; Li, Shuai 1 ; Li, Jing 1 ; Tan, Xinyang 1 ; Zhao, Zhichang 1 ; Jiang, Lei 3 ; Hoffmann, Ary A. 4 ; Fang, Jichao 1 ; Ji, Rui 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base,Minist Sci & Technol, Nanjing 210014, Peoples R China

2.Nanjing Agr Univ, Coll Plant Protect, Nanjing, Peoples R China

3.Anhui Agr Univ, Sch Plant Protect, Hefei, Peoples R China

4.Univ Melbourne, Bio21 Inst, Sch Biosci, Parkville, Vic, Australia

5.Huaiyin Normal Univ, Jiangsu Collaborat Innovat Ctr Reg Modern Agr & En, Huaian, Jiangsu, Peoples R China

关键词： egg-associated secretion; Nilaparvata lugens; oviposition; plant immunity; proteome

期刊名称：INSECT SCIENCE （ 影响因子：4.0； 五年影响因子：3.6 ）

ISSN： 1672-9609

年卷期： 2023 年

页码：

收录情况： SCI

摘要： The brown planthopper (BPH, Nilaparvata lugens) is a notorious sap-sucking insect pest that damages rice (Oryza sativa) plants throughout Asia. During BPH feeding, saliva enters rice plant tissues, whereas during oviposition egg-associated secretions (EAS) are deposited in damaged plant tissue. Dynamic changes in rice to planthopper salivary effectors have been widely reported. However, the effects of EAS from planthopper on rice immunity remains largely unexplored. In this study, we found that both infestation of rice by gravid BPH female adults and treatment with the EAS elicited a strong and rapid accumulation of jasmonic acid (JA), JA-isoleucine, and hydrogen peroxide in rice. EAS enhanced plant defenses not only in rice but also in tobacco, and these impaired the performance of BPH on rice, as well as the performance of aphids and whiteflies on tobacco. High-throughput proteome sequencing of EAS led to 110 proteins being identified and 53 proteins with 2 or more unique peptides being detected. Some proteins from BPH EAS were also found in the salivary proteome from herbivores, suggesting potential evolutionary conservation of effector functions across feeding and oviposition; however, others were only identified in EAS, and these are likely specifically related to oviposition. These findings point to novel proteins affecting interactions between planthoppers and rice during oviposition, providing an additional source of information for effector studies.

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