Pepper mild mottle virus can infect and traffick within Nicotiana benthamiana plants in non-virion forms

文献类型： 外文期刊

第一作者： Zheng, Kaiyue

作者： Zheng, Kaiyue;Wan, Qionglian;Zhang, Ge;Lu, Yuwen;Zheng, Hongying;Yan, Fei;Peng, Jiejun;Wu, Jian;Zhang, Ruihao;Wan, Qionglian

作者机构：

关键词： Virus transport; Long-distance transport; Pepper mild mottle virus; Coat protein; Root infection; Non-virion form

期刊名称：VIROLOGY （ 影响因子：3.7； 五年影响因子：3.2 ）

ISSN： 0042-6822

年卷期： 2023 年 587 卷

页码：

收录情况： SCI

摘要： Virions are responsible for the long-distance transport of many viruses, such as Pepper mild mottle virus (PMMoV). Emerging evidence indicates viral traffic in the form of ribonucleoprotein complexes (RNP), yet comprehensive analysis is scarce. In this study, we inoculated plants with PMMoV-GFP, both with and without the coding sequence for the coat protein (CP). PMMoV-GFP was detected in systemic leaves, even in the absence of the CP, despite the presence of much smaller infection areas. Moreover, using leaf extracts from PMMoV-infected plants to perform a root-irrigation experiment, we confirmed that PMMoV can infect plants through root transmission. Diluting the leaf extracts significantly diminished infectivity, and attempts to compensate for the dilution of other components by adding virions above the original level proved ineffective. Our findings strongly indicate that PMMoV can infect and traffick within plants in non-virion forms. Future studies should aim to identify the specific forms involved.

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