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A viral protein orchestrates rice ethylene signaling to coordinate viral infection and insect vector-mediated transmission
背景介绍:Arthropod-borne viruses cause serious threats to human health and global agriculture by rapidly spreading via insect vectors.
(SRBSDV) is the most damaging rice-infecting virus that is frequently transmitted by planthoppers.
节肢动物传播的病毒通过昆虫媒介迅速传播,对人类健康和全球农业造成严重威胁。稻瘟病毒(SRBSDV)是最具破坏性的水稻感染病毒,经常由稻飞虱传播。
提出问题:However, the molecular mechanisms underlying its propagation in the host plants and epidemics in the field are largely unknown.
然而,它在主要寄主植物中传播的分子机制以及田间流行在很大程度上是未知的。
研究内容:Here, we showed that the SRBSDV-encoded P6 protein is a key effector that regulates rice ethylene signaling to coordinate viral infection and transmission.
该研究证明了SRBSDV编码的P6蛋白是调节水稻乙烯信号以协调病毒感染和传播的关键效应器。
研究结果#1:In early SRBSDV infection, P6 interacts with OsRTH2 in the cytoplasm to activate ethylene signaling and enhance SRBSDV proliferation; this also repels the insect vector to reduce infestation.
在SRBSDV感染的早期,P6与细胞质中的OsRTH2相互作用,激活乙烯信号,促进SRBSDV的增殖;这也排斥昆虫载体,以减少侵染。
#2:In late infection, P6 enters the nucleus, where it interacts with OsEIL2, a key transcription factor of ethylene signaling. The P6-OsEIL2 interaction suppresses ethylene signaling by preventing the dimerization of OsEIL2, thereby facilitating viral transmission by attracting the insect vector.
在晚期感染中,P6进入细胞核,在那里它与乙烯信号转导的关键转录因子OsEIL2相互作用。P6-OsEIL2的相互作用通过阻止OsEIL2的二聚化来抑制乙烯信号,从而通过吸引昆虫载体来促进病毒的传播。
结论:Collectively, these findings reveal a novel molecular mechanism by which an arbovirus modulates the host defense system to promote viral infection and transmission.
总之,这些发现揭示了一种新的分子机制,虫媒病毒通过这种机制调节宿主防御系统,促进病毒感染和传播。
原文链接:https://www.sciencedirect.com/science/article/pii/S1674205222000065
张彤**个人简介:
2012-2015 美国University of Missouri,博士后
2016-今 华南农业大学,副教授
教育经历2003-2007 浙江大学 应用生物科学 学士
2007-2012 浙江大学 生物化学与分子生物学 博士
研究方向:1. 水稻病毒与寄主植物、介体昆虫的三者互作分子机制。
2. 水稻重要病毒病的成灾机理。
3. 水稻病害精准测报和绿色防控。
Journal: Molecular Plant
Published date: January 13, 2022
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