中文摘要：近年来，番茄褪绿病毒（ToCV）和瓜类褪绿黄化病毒（CCYV）这两种病毒由于其快速传播及其对全球蔬菜生产的毁灭性影响而获得越来越多的关注。这两种病毒都由烟粉虱以半持久方式传播。到目前为止，中国南方海南仍未见有报道。本文通过观察与实验的方法探索中国海南由烟粉虱传播的CCYV和ToCV的流行和发病动态。本研究结果首次揭示了杂草水花生会受ToCV和CCYV的影响。此外，烟粉虱表现出较高的ToCV和CCYV带毒率。海南是全国非常重要的蔬菜生产和良种繁育中心。如果烟粉虱同时携带这两种病毒，它们在共同寄主植物上的协同影响可能会在不久的将来导致灾难性的损失。
外文摘要：Background: In recent years, two of the crinivirus, Tomato chlorosis virus (ToCV) and Cucurbit chlorotic yellows virus (CCYV) have gained increasing attention due to their rapid spread and devastating impacts on vegetable production worldwide. Both of these viruses are transmitted by the sweet potato whitefly, Bemisia tabaci (Gennadius), in a semi-persistent manner. Up to now, there is still lack of report in Hainan, the south of China. Methods: We used observational and experimental methods to explore the prevalence and incidence dynamic of CCYV and ToCV transmitted by whiteflies in Hainan of China. Results: In 2016, the chlorosis symptom was observed in the tomato and cucumber plants with a large number of B. tabaci on the infected leaves in Hainan, China, with the incidence rate of 69.8% and 62.6% on tomato and cucumber, respectively. Based on molecular identification, Q biotype was determined with a viruliferous rate of 65.0% and 55.0% on the tomato and cucumber plants, respectively. The weed, Alternanthera philoxeroides near the tomato and cucumber was co-infected by the two viruses. Furthermore, incidence dynamic of ToCV and CCYV showed a close relationship with the weed, Alternanthera philoxeroides, which is widely distributed in Hainan. Conclusion: Our results firstly reveal that the weed, A. philoxeroides is infected by both ToCV and CCYV. Besides, whiteflies showed a high viruliferous rate of ToCV and CCYV. Hainan is an extremely important vegetable production and seed breeding center in China. If the whitefly can carry these two viruses concurrently, co-infection in their mutual host plants can lead to devastating losses in the near future.
外文关键词：Tomato chlorosis virus; cucurbit chlorotic yellows virus; Bemisia tabaci Molecular identificationQ biotype Alternanthera philoxeroides
作者：Tang, Xin ; Shi, Xiaobin; Zhang, Deyong ; Li, Fan; Yan, Fei; Zhang, Youjun; Liu, Yong;Zhou, Xuguo
作者单位：湖南农业大学
期刊名称：VIROLOGY JOURNAL
期刊影响因子：2.139
出版年份：2017
出版刊次：9
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