First Report of Potato Viruses Infecting Lamium purpureum in Ukraine

Mikrobiolohichnyi Zhurnal(2021)

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摘要
Weeds as reservoirs for destructive plant pathogens have a significant impact on the viral epidemiology, ecology and, as a result, on local economy, and are therefore being investigated in many parts of the world. Thus, the aim of this study was to investigate virus occurrence in red dead-nettle plants (Lamium purpureum L.) widespread in urban and field conditions throughout the in the Kyiv region of Ukraine. Methods. Field crop observations, visual diagnosis, biological testing of the virus, immunoassay (ELISA), polymerase chain reaction with reverse transcription (RT-PCR), sanger sequencing of partial genome sequences of PVX, PVY, PVS, PVM. Results. The results obtained in the study indicate that Lamium plants could be alternative weed hosts of number important viral diseases including potatoes and other vegetables. Serological and molecular test results evidence plants were infected by Potato virus X, Potato virus Y, Potato virus M, Potato virus S and therefore Lamium L. species can serve as a potential source of inoculum for wide range of vegetables and ornamentals. This study is the first report of Lamium plants being naturally infected with Potato virus M and Potato virus S in central Europe. Conclusions. These plants are alternative host of mixed infection with viruses belonging to different families: Alphaflexiviridae, Betaflexiviridae and Potyviridae.
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