Advanced Centre for Plant Virology, Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi 110012, India.
Arch Virol. 2013 Jan;158(1):217-24. doi: 10.1007/s00705-012-1468-7. Epub 2012 Sep 15.
Tomato leaf curl is a serious malady in the state of Maharashtra, India, causing nearly 100 % yield loss. An extensive survey was done in the affected fields of tomato in the year 2008, and members of three species of begomoviruses were identified as causing the disease. More than 60 % of the samples from diseased plants were infected with tomato leaf curl Gujarat virus (ToLCGuV). Isolates collected from these fields differed from the Varanasi isolate of ToLCGuV in not having a DNA B component. Instead, they were like typical Old World monopartite begomoviruses in that they were associated with only one betasatellite, tomato yellow leaf curl Thailand betasatellite (TYLCTHB). ToLCGuV alone is readily infectious, expressing systemic symptoms in Nicotiana benthamiana and tomato. Co-inoculation of ToLCGuV with TYLCTHB, increased symptom severity and reduced the incubation time required for symptom expression. ToLCGuV successfully interacted with heterologous DNA B component of ToLCNDV [IN:Pun:JID:08], and co-inoculation of these two resulted in yellow mottling symptoms that were typical of DNA B.
番茄曲叶病在印度马哈拉施特拉邦是一种严重的病害，会导致近 100%的产量损失。2008 年对番茄受感染田地进行了广泛调查，鉴定出三种曲叶病毒科病毒成员是造成该病的原因。来自患病植物的 60%以上样本感染了番茄曲叶古尔冈病毒（ToLCGuV）。从这些田间采集的分离物与 ToLCGuV 的瓦拉纳西分离物不同，因为它们没有 DNA B 成分。相反，它们与典型的旧世界单分体病毒科病毒相似，仅与一种贝塔卫星，即番茄黄卷叶泰国贝塔卫星（TYLCTHB）相关。仅 ToLCGuV 就具有传染性，在本氏烟和番茄中表达系统症状。ToLCGuV 与 TYLCTHB 共同接种会增加症状严重程度并缩短症状表达所需的潜伏期。ToLCGuV 成功地与 ToLCNDV 的异源 DNA B 成分相互作用[IN:Pun:JID:08]，这两种成分的共同接种会导致典型 DNA B 的黄斑驳症状。
