Geminivirus-Associated Betasatellites: Exploiting Chinks in the Antiviral Arsenal of Plants

文献类型： 外文期刊

第一作者： Li, Fangfang

作者： Li, Fangfang;Zhou, Xueping;Guo, Wei;Sunter, Garry;Zhou, Xueping

作者机构：

期刊名称：TRENDS IN PLANT SCIENCE （ 影响因子：18.313； 五年影响因子：20.034 ）

ISSN： 1360-1385

年卷期： 2019 年 24 卷 6 期

页码：

收录情况： SCI

摘要： Betasatellites are a diverse group of circular single-stranded DNA satellites frequently associated with begomoviruses belonging to the family Geminiviridae. Challenged with a geminivirus-betasatellite infection, plants have employed sophisticated defense mechanisms to protect themselves. Betasatellites, in turn, employ mechanisms to antagonize these plant antiviral pathways. In this review, we focus on the anti-geminiviral immune pathways present both in plants and whiteflies. We also outline the counter-defensive strategies deployed by betasatellites to overcome the host defenses and initiate a successful infection. Finally, we discuss the outcomes of the opposing forces of plant immunity and betasatellite-mediated antagonism in the context of an evolutionary arms race. Understanding of the molecular dialog between plants and betasatellites will likely allow for the development of novel antiviral strategies.

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