Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; email:
Plant Health Institute of Montpellier, Univ Montpellier, CIRAD, INRAE, IRD, Montpellier SupAgro, Montpellier, France; email:
Annu Rev Entomol. 2021 Jan 7;66:389-405. doi: 10.1146/annurev-ento-060920-094531. Epub 2020 Sep 15.
Of the approximately 1,200 plant virus species that have been described to date, nearly one-third are single-stranded DNA (ssDNA) viruses, and all are transmitted by insect vectors. However, most studies of vector transmission of plant viruses have focused on RNA viruses. All known plant ssDNA viruses belong to two economically important families, and , and in recent years, there have been increased efforts to understand whether they have evolved similar relationships with their respective insect vectors. This review describes the current understanding of ssDNA virus-vector interactions, including how these viruses cross insect vector cellular barriers, the responses of vectors to virus circulation, the possible existence of viral replication within insect vectors, and the three-way virus-vector-plant interactions. Despite recent breakthroughs in our understanding of these viruses, many aspects of plant ssDNA virus transmission remain elusive. More effort is needed to identify insect proteins that mediate the transmission of plant ssDNA viruses and to understand the complex virus-insect-plant three-way interactions in the field during natural infection.
迄今为止，已描述的约 1200 种植物病毒中，近三分之一为单链 DNA（ssDNA）病毒，且均由昆虫介体传播。然而，大多数关于植物病毒介体传播的研究都集中在 RNA 病毒上。所有已知的植物 ssDNA 病毒都属于两个具有重要经济意义的科，近年来，人们越来越努力地了解它们是否与各自的昆虫介体进化出了相似的关系。本综述描述了目前对 ssDNA 病毒-介体相互作用的理解，包括这些病毒如何跨越昆虫介体的细胞屏障，介体对病毒循环的反应，病毒在昆虫介体中可能存在的复制，以及病毒-介体-植物的三方相互作用。尽管我们对这些病毒的理解最近取得了突破，但植物 ssDNA 病毒传播的许多方面仍然难以捉摸。需要进一步努力来鉴定介导植物 ssDNA 病毒传播的昆虫蛋白，并在自然感染期间在田间实地了解复杂的病毒-昆虫-植物三方相互作用。
