关键词: 植物病毒；症状发生；病毒元件；寄主因子

Abstract:

Plants usually display symptom such as mosaic, deformation, chlorosis or necrosis after virus infection. These symptoms will directly cause substantial losses in crop yield, and reduce crop quality in agriculture production. Therefore, the mechanism of plant virus disease symptom development has long been a concern by the people. This paper summarized the latest advances made in home and abroad during the recent years from virus and host  fields, respectively and particularly the identified virus components and the host factors involved in symptom development. On this basis, the paper also analyzed and discussed the molecular mechanisms of virus symptom development.

Key words: plant virus, symptom development, viral element, host factor