FIRST REPORT OF TOBACCO CURLY SHOOT VIRUS TbCSV AND ITS ASSOCIATED SATELLITES FROM WATERMELON IN CHINA

L.L. Zhao, M. Ding, X.Y. Zhang, Y.Y. Yin, T.T. Li, Z.K. Zhang
doi: 10.4454/jpp.v99i3.3987
Abstract:
Tobacco curly shoot virus (TbCSV), a monopartite begomovirus (genus Begomovirus, family Geminiviridae), is a serious threat to many crops and weeds in China and India. In this study, a begomovirus disease complex was identified from a watermelon sample displaying severe leaf curling and yellowing symptoms. The genome of this TbCSV isolate Y3560 contained 2,744 nucleotides (nt) and shared 97.9% identity with the TbCSV YN4519 isolate. The complete nucleotide sequence of the betasatellite DNA molecule associated to isolate Y3560 contained 1,342 nt and shared 91.0% sequence identity with the Tomato yellow leaf curl China virus betasatellite isolate TYLCCNB-Y319. The nucleotide sequence of the alphasatellite contained 1,372 nt and shared the highest levels of identity (94.0%) with Tobacco curly shoot virus associated DNA1 (TbCSA). This is the first report of a monopartite begomovirus and associated satellites from watermelon.
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