Department of Botany and Plant Pathology and Center for Genome Research and Biocomputing, Oregon State University, Corvallis, Oregon 97331-2902, USA; email:
Archaeal Virology Unit, Department of Microbiology, Institut Pasteur, 75015 Paris, France.
Annu Rev Phytopathol. 2020 Aug 25;58:23-53. doi: 10.1146/annurev-phyto-030320-041346. Epub 2020 May 27.
Land plants host a vast and diverse virome that is dominated by RNA viruses, with major additional contributions from reverse-transcribing and single-stranded (ss) DNA viruses. Here, we introduce the recently adopted comprehensive taxonomy of viruses based on phylogenomic analyses, as applied to the plant virome. We further trace the evolutionary ancestry of distinct plant virus lineages to primordial genetic mobile elements. We discuss the growing evidence of the pivotal role of horizontal virus transfer from invertebrates to plants during the terrestrialization of these organisms, which was enabled by the evolution of close ecological associations between these diverse organisms. It is our hope that the emerging big picture of the formation and global architecture of the plant virome will be of broad interest to plant biologists and virologists alike and will stimulate ever deeper inquiry into the fascinating field of virus-plant coevolution.
陆地植物拥有庞大而多样的病毒组，其中以 RNA 病毒为主，还有大量逆转录和单链 (ss) DNA 病毒。在这里，我们根据系统基因组分析介绍了最近采用的病毒综合分类法，该方法适用于植物病毒组。我们进一步追溯了不同植物病毒谱系的进化起源，它们可以追溯到原始遗传移动元件。我们讨论了越来越多的证据表明，在这些生物的陆地化过程中，通过无脊椎动物向植物的水平病毒转移发挥了关键作用，这得益于这些多样化生物之间密切生态联系的进化。我们希望，形成和全球植物病毒组架构的这一新兴全貌将引起植物生物学家和病毒学家的广泛关注，并激发对病毒-植物共同进化这一迷人领域的更深入研究。
