Abstract:Tomato Spotted Wilt orthotospovirus (TSWV) is a member of the Orthotospovirus genus. It has extensive host and causes serious disease in many crops. In May 2021, virus-like symptoms such as chlorosis, mottling, leaf yellowing and necrosis were observed on Polygonum multiflorum (hereinafter as P. multiflorum) leaves in Kunming, Yunnan Province, China. Spherical viral particles with a diameter of 80-120nm were observed by TEM.RT-PCR and DNA sequencing analysis were performed, and the results showed that the sequ… Show more
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