Rice stripe virus coat protein induces the accumulation of jasmonic acid, activating plant defence against the virus while also attracting its vector to feed.
Rice stripe virus coat protein induces the accumulation of jasmonic acid, activating plant defence against the virus while also attracting its vector to feed.
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水稻条纹病毒外壳蛋白诱导茉莉酸积累，激活植物对病毒的防御，同时吸引其载体取食
DOI：
10.1111/mpp.12995
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发表时间：
2020-12
影响因子：
4.9
通讯作者：
Yan F
中科院分区：
文献类型：
--
作者：
Han K;Huang H;Zheng H;Ji M;Yuan Q;Cui W;Zhang H;Peng J;Lu Y;Rao S;Wu G;Lin L;Song X;Sun Z;Li J;Zhang C;Lou Y;Chen J;Yan F
茉莉酸（jasmonic acid， JA）途径在植物防御病原体和食草动物中起着至关重要的作用。水稻条纹病毒（RSV）是特努伊病毒属的型成员。它由小褐飞虱（SBPH）传播，在东亚造成破坏性的流行病。JA在对抗RSV及其宿主和载体的三方相互作用中可能发挥的作用尚不清楚。在这里，我们发现JA途径是由RSV感染诱导的，并对RSV起防御作用。外壳蛋白（CP）是诱导JA途径的主要病毒成分。茉莉酸甲酯处理能吸引SBPHs取食水稻植株，而JA缺陷突变体的吸引力不如野生型水稻。我们的研究结果表明，CP是一种JA途径的诱导剂，可以激活植物对RSV的防御，同时也可以吸引SBPHs取食，从而有利于病毒的传播。这是首次报道JA在RSV及其宿主和载体三方相互作用中的作用。水稻条纹病毒外壳蛋白是茉莉酸途径的诱导剂，它激活植物对病毒的防御，同时也吸引其载体摄食并有利于病毒传播。
The jasmonic acid (JA) pathway plays crucial roles in plant defence against pathogens and herbivores. Rice stripe virus (RSV) is the type member of the genus Tenuivirus. It is transmitted by the small brown planthopper (SBPH) and causes damaging epidemics in East Asia. The role(s) that JA may play in the tripartite interaction against RSV, its host, and vector are poorly understood. Here, we found that the JA pathway was induced by RSV infection and played a defence role against RSV. The coat protein (CP) was the major viral component responsible for inducing the JA pathway. Methyl jasmonate treatment attracted SBPHs to feed on rice plants while a JA‐deficient mutant was less attractive than wild‐type rice. SBPHs showed an obvious preference for feeding on transgenic rice lines expressing RSV CP. Our results demonstrate that CP is an inducer of the JA pathway that activates plant defence against RSV while also attracting SBPHs to feed and benefitting viral transmission. This is the first report of the function of JA in the tripartite interaction between RSV, its host, and its vector. Rice stripe virus coat protein is an inducer of the jasmonic acid pathway that activates plant defence against the virus while also attracting its vector to feed and benefitting viral transmission.
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