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A Local Lesion Host for Potato Spindle Tuber Virus. R. P. Singh, Research Scientist, Canada Department of Agriculture, Research Station, Fredericton, New Brunswick, Canada; Phytopathology 61:1034-1035. DOI: 10.1094/Phyto-61-1034.

Scopolia sinensis leaves produced local lesions when inoculated mechanically with crude sap from tomato leaves infected with potato spindle tuber virus (PSTV). The lesions were dark brown, necrotic, and roughly circular. They appeared in 7 to 10 days in response to the severe strain of PSTV and in 10 to 15 days in response to the mild strain. The S. sinensis leaves were suitable for the half-leaf test in estimating virus concentration.