Townsend R
Yale J Biol Med. 1983 Sep-Dec;56(5-6):771-6.
Strains of Spiroplasma citri are persistently infected by viruses which have been separated into three groups on the basis of their morphology. The properties of each group are reviewed. Viruses normally only appear in spiroplasma cultures but recently all three types of particle have been identified in cells of a single strain of S. citri within an infected plant. Replication of a short-tailed polyhedral virus SP-V3 (ai) appears to be correlated with unusually mild symptom expression. Introduction of the virus with its host into plants already infected with a severe and potentially lethal strain of S. citri results in a marked suppression of symptoms and a reduction in the number of spiroplasmas.
柑橘螺原体菌株持续受到病毒感染，这些病毒根据其形态已被分为三组。对每组病毒的特性进行了综述。病毒通常仅出现在螺原体培养物中，但最近在一株受感染植物内的单一柑橘螺原体菌株的细胞中已鉴定出所有三种类型的颗粒。短尾多面体病毒SP-V3（ai）的复制似乎与异常轻微的症状表现相关。将该病毒与其宿主引入已被严重且可能致命的柑橘螺原体菌株感染的植物中，会导致症状明显减轻以及螺原体数量减少。
