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Journal of Virology, October 2000, p. 9808-9810, Vol. 74, No. 20
0022-538X/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Assembly of Double-Shelled, Virus-Like Particles in Transgenic Rice Plants Expressing Two Major Structural Proteins of Rice Dwarf Virus

Honghong Zheng,1 Li Yu,1 Chunhong Wei,1 Dongwei Hu,2 Yunping Shen,1 Zhangliang Chen,1 and Yi Li1,*

College of Life Sciences, Peking University, Beijing 100871,1 and Biotechnology Institute of Zhejiang University, Hangzhou 310029,2 China

Received 1 March 2000/Accepted 3 July 2000

Rice dwarf virus (RDV) is a double-shelled particle that contains a major capsid protein (P8), a major core protein (P3), several minor core proteins, and viral genomic double-stranded RNA. Coexpression of P8 and P3 in transgenic rice plants resulted in formation of double-shelled, virus-like particles (VLPs) similar to the authentic RDV particles. The VLPs were not detected in transgenic rice plant cells expressing P8 alone. This in vivo result suggests that P8 interacted with P3 and that these two proteins provide the structural integrity required for the formation of VLPs in rice cells independently of other structural proteins, nonstructural proteins, or viral genomic double-stranded RNAs.

* Corresponding author. Mailing address: College of Life Sciences, Peking University, Beijing 100871, China. Phone: 86-10-62752405. Fax: 86-10-62751844. E-mail: liyi{at}pku.edu.cn.

Journal of Virology, October 2000, p. 9808-9810, Vol. 74, No. 20
0022-538X/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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