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Virus diseases and viruses of cultivated and wild-growing Solanaceous plants in Hungary. 9. Resevoir host plants and pathological variability of Henbane mosaic virus (HMV).

Salamon, P.

Növényvédelem 2018 Vol 54 No. 4 pp. 160-170;


Henbane mosaic virus (HMV, Genus: Potyvirus) has been found naturally infecting belladonna (Atropa belladonna L.), Chinese lantern (Physalis alkekengi L.) and woody nightshade (Solanum dulcamara L.) plants but could not yet detected in wild growing henbane (Hyoscyamus niger L.) in Hungary. HMV isolates from these hosts were compared with each others and with some potyviruses including the type HMV-R (Rothamsted) isolate and the DFV isolate of Hungarian Datura innoxia mosaic virus (HDMV). Isolates of HMV had similar experimental host range, but they showed remarkable variability in symptoms caused in different solanaceous plants. Lethal (L), > necrotic-mosaic (NM) and mosaic (M) strains could be distinguished by reactions of N. tabacum cv. Xanthi-nc. Hungarian HMV isolates were demonstrated closely related serologically to the type HMV-R isolate. Pathological and serological tests also revealed that the tentative potyvirus species named Hungarian Datura innoxia mosaic virus (HDMV) should be classified to the NM strain of HMV. A. bella-donna, Ph. alkekengi and S. dulcamara act as reservoirs and primary sources of HMV in Hungary. S. dulcamara proved to be a new natural host of HMV. Data on geographical distribution and natural reservoir hosts strongly suggest that HMV is a Solanaceae pathogenic potyvirus species of Eurasian origin.