Kikkert M, Van Lent J, Storms M, Bodegom P, Kormelink R, Goldbach R
Laboratory of Virology, Wageningen Agricultural University, Wageningen, The Netherlands.
J Virol. 1999 Mar;73(3):2288-97. doi: 10.1128/JVI.73.3.2288-2297.1999.
A model for the maturation of tomato spotted wilt virus (TSWV) particles is proposed, mainly based on results with a protoplast infection system, in which the chronology of different maturation events could be determined. By using specific monoclonal and polyclonal antisera in immunofluorescence and electron microscopy, the site of TSWV particle morphogenesis was determined to be the Golgi system. The viral glycoproteins G1 and G2 accumulate in the Golgi prior to a process of wrapping, by which the viral nucleocapsids obtain a double membrane. In a later stage of the maturation, these doubly enveloped particles fuse to each other and to the endoplasmic reticulum to form singly enveloped particles clustered in membranes. Similarities and differences between the maturation of animal-infecting (bunya)viruses and plant-infecting tospoviruses are discussed.
本文提出了一个番茄斑萎病毒(TSWV)粒子成熟的模型,该模型主要基于原生质体感染系统的实验结果,在该系统中可以确定不同成熟事件的时间顺序。通过在免疫荧光和电子显微镜中使用特异性单克隆和多克隆抗血清,确定TSWV粒子形态发生的部位是高尔基体系统。病毒糖蛋白G1和G2在包裹过程之前在高尔基体中积累,通过该过程病毒核衣壳获得双层膜。在成熟的后期,这些双层包膜粒子相互融合并与内质网融合,形成聚集在膜中的单层包膜粒子。本文还讨论了感染动物的(布尼亚)病毒和感染植物的番茄斑萎病毒在成熟过程中的异同。