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Rice stripe virus activates the bZIP17/28 branch of the unfolded protein response signalling pathway to promote viral infection

文献类型： 外文期刊

作者： Li, Chenyang 1 ; Zhang, Tianze 1 ; Liu, Yu 1 ; Li, Zongdi 1 ; Wang, Yaqin 1 ; Fu, Shuai 1 ; Xu, Yi 1 ; Zhou, Tong 2 ; Wu, Jianxiang 1 ; Zhou, Xueping 1 ;

作者机构： 1.Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol, Hangzhou 310058, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Plant Protect, Key Lab Food Qual & Safety, Nanjing, Peoples R China

3.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China

4.Nanjing Agr Univ, Coll Plant Protect, Dept Plant Pathol, Nanjing 210095, Peoples R China

关键词： bZIP17; 28; bZIP60; Rice stripe virus; unfolded protein response; viral infection

期刊名称：MOLECULAR PLANT PATHOLOGY （ 影响因子：5.52； 五年影响因子：6.25 ）

ISSN： 1464-6722

年卷期： 2022 年 23 卷 3 期

页码：

收录情况： SCI

摘要： The unfolded protein response (UPR) plays important roles in plant virus infection. Our previous study has proved that rice stripe virus (RSV) infection elicits host UPR. However, the mechanism on how the UPR is triggered upon RSV infection remains obscure. Here, we show that the bZIP17/28 branch of the UPR signalling pathway is activated upon RSV infection in Nicotiana benthamiana. We found that membrane-associated proteins NSvc2 and NSvc4 encoded by RSV are responsible for the activation of the bZIP17/28 branch. Ectopic expression of NSvc2 or NSvc4 in plant leaves induced the proteolytic processing of NbbZIP17/28 and up-regulated the expression of UPR-related genes. Silencing NbbZIP17/28 significantly inhibited RSV infection. We show that RSV can specifically elicit the UPR through the bZIP17/28 branch, thus promoting virus infection of N. benthamiana plants.

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