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Title: COMPARATIVE HOST RANGE OF U.S. ISOLATES OF PLUM POX VIRUS AMONG PRUNUS AND OTHER WOODY PLANT SPECIES FOLLOWING GRAFT INOCULATION OR APHID TRANSMISSION

Author
item Damsteegt, Vernon
item Scorza, Ralph
item Gildow, F
item Schneider, William
item Stone, Andrew - Andy
item Luster, Douglas - Doug

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 3/15/2004
Publication Date: 6/1/2004
Citation: Damsteegt, V.D., Scorza, R., Gildow, F.E., Schneider, W.L., Stone, A.L., Luster, D.G. 2004. Comparative host range of U.S. isolates of plum pox virus among Prunus and other woody plant species following graft inoculation or aphid transmission. Phytopathology. 94:S24.

Interpretive Summary:

Technical Abstract: Plum pox virus (PPV) has been known in the U. S. since 1999. Despite extensive national surveys PPV has been found only in a four county area of PA. Many wild Prunus species have the potential to serve as reservoirs for PPV, if found to be susceptible to the virus. Identifying susceptible wild and ornamental host species is essential for success of the eradication effort. Susceptibility to PPV infection was evaluated by graft-inoculation and aphid transmission of PPV-PENN isolates to rooted cuttings or seedlings of more than 30 species. Plants were observed for symptoms for 30-90 days, assayed by ELISA and PCR, back-inoculated to peach seedlings, vernalized, and re-assayed following regrowth. Several important commercial, wild, and ornamental species including black cherry, chokecherry, dwarf-flowering almond, flowering almond, and ornamental cherry were identified as potential reservoir species of PPV-PENN isolates.