中文摘要：缺乏对病毒（尤其是番茄金花叶和番茄黄化病毒病病）流行病学的全面了解，粉虱传播病毒的有效防治仍然是一个挑战。本研究通过监测4个商业区域的16个地块，研究了巴西番茄田中这两种病害的时空分布。这两种病害分别是由番茄重型皱缩病毒（ToSRV）和番茄褪绿病毒（ToCV）引起的。每种病毒发病率在同一田间的地块中是相似的，但不同田块之间的变化很大。研究结果表明，虽然ToSRV（持久性）和ToCV（半持续性）的载体传播方式不同，但这两种病害的主要传播机制很大可能是相似的：初始传播是主要机制，并且这些病害的流行是由几种带毒粉虱引起的。
外文摘要：Efficient management of whitefly-borne diseases remains a challenge due to the lack of a comprehensive understanding of their epidemiology, particularly of the diseases tomato golden mosaic and tomato yellowing. Here, by monitoring 16 plots in four commercial fields, the temporal and spatial distribution of these two diseases were studied in tomato fields in Brazil. In the experimental plots these diseases were caused by tomato severe rugose virus (ToSRV) and tomato chlorosis virus (ToCV), respectively. The incidence of each virus was similar in the plots within a field but varied greatly among fields. Plants with symptoms for both diseases were randomly distributed in three of four spatial analyses. The curves representing the progress of both diseases were similar and contained small fluctuations, indicating that the spread of both viruses was similar under field conditions. In transmission experiments of ToSRV and ToCV by Bemisia tabaci MEAM1 (former biotype B), these viruses had a similar transmission rate in single or mixed infections. It was then shown that primary and secondary spread of ToCV were not efficiently controlled by insecticide applications. Finally, in a typical monomolecular model of disease progress, simulation of the primary dissemination of ToSRV and ToCV showed that infected plants were predominantly randomly distributed. It is concluded that, although the manner of vector transmission differs between ToSRV (persistent) and ToCV (semipersistent), the main dispersal mechanisms are most probably similar for these two diseases: primary spread is the predominant mechanism, and epidemics of these diseases have been caused by several influxes of viruliferous whiteflies.
外文关键词：disease management; epidemiology; Solanum lycopersicum; whitefly
作者：Macedo, M. A.; Inoue-Nagata, A. K.; Silva, T. N. Z.; 等
作者单位：巴西利亚大学
期刊名称：PLANT PATHOLOGY
期刊影响因子：2.493
出版年份：2019
出版刊次：1
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