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

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.

Keywords


Begomovirus; betasatellite; alphasatellite; watermelon

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DOI: http://dx.doi.org/10.4454/jpp.v99i3.3987

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