Abstract Non-host resistance (NHR) is a prevalent mode of plant defense against invading pathogens, including viruses. Being hard to circumvent, NHR has considerable potential to provide durable resistance against virus infection. This review systematically analyzes recent research findings demonstrating NHR mechanisms and chronologically enumerates the defense strategies contributing to NHR. Conventionally, the NHR mechanisms that operate by restricting viral entry and multiplication are termed “true NHR.” Here, we propose NHR mechanisms operating beyond viral multiplication in non-host plants as “apparent NHR.” This review elucidates both categories of NHR and provides insights into the mechanisms involved in NHR.

中文翻译：

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对植物病毒的非宿主抗性：我们知道什么？

摘要 非寄主抗性 (NHR) 是植物抵御入侵病原体（包括病毒）的一种普遍模式。由于难以规避，NHR 具有提供持久抵抗病毒感染的巨大潜力。本综述系统地分析了最近的研究结果，证明了 NHR 机制，并按时间顺序列举了 NHR 的防御策略。通常，通过限制病毒进入和繁殖来运作的 NHR 机制被称为“真正的 NHR”。在这里，我们建议在非寄主植物中超越病毒繁殖的 NHR 机制称为“表观 NHR”。这篇综述阐明了 NHR 的两类，并提供了对 NHR 所涉及机制的见解。