Viral Reservoir Capacity of Wild Prunus Alternative Hosts of Plum Pox Virus Through Multiple Cycles of Transmission and Dormancy

• DOI: 10.1094/pdis-04-21-0802-re
• Publication Date: 2021-07-23T04:33:17Z
• Authors: Tamara D. Collum; Andrew L. Stone; Diana J. Sherman; Vernon D. Damsteegt; William L. Schneider; Elizabeth E. Rogers
• Keywords: Prunus persica; 0301 basic medicine; 03 medical and health sciences; Plum Pox Virus; Fruit; Prunus; Plant Diseases; 3. Good health

Plum pox virus (PPV) is a significant pathogen of Prunus worldwide and known for having broad experimental host range. Many these hosts represent epidemiological risks as potential wild viral reservoirs. A comparative study the PPV reservoir capacity three commonly found native North American species, western choke cherry (Prunus virginiana var. demissa), black serotina), plum americana) was conducted. Pennsylvania isolates PPV-D were transmitted from original peach persica cv. GF305) to all species. Viral accumulation transmission rates alternative monitored over course five vegetative growth cold induced dormancy (CID) cycles. The species demonstrated differences in their ability maintain likelihood additional or back peach. Western had low (5.8%) initial infection levels, not transmissible cherry, only possible before first CID cycle. Black intermediate levels (26.6%) but did high after repeated Conversely, level (50%) that significantly different (72.2%) maintained moderate (15 25%) both through cycles CID. Our results indicate has greatest act PPV-D.