Potato yellow dwarf nucleorhabdovirus found infecting Capsicum spp. in Oklahoma (US)
During a field survey conducted in 2021 in commercial fields of Capsicum spp. in Caddo county, Oklahoma (US), disease symptoms were observed. Affected plants showed leaf distortion, mottling, apical yellowing, and vein banding. Leaf samples (17) were collected from diseased capsicum plants and tested in the laboratory by RT-PCR for the presence of pepper mild mottle virus. Two samples which had given negative results with PCR tests were further tested with HTS. In these 2 samples, results of HTS and additional tests confirmed the presence of potato yellow dwarf nucleorhabdovirus* (PYDV, EPPO A1 List). The EPPO Secretariat previously had no information on the presence of PYDV in Oklahoma and this is the first time that this virus is detected in capsicum plants.
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* Now called Alphanucleorhabdovirus tuberosum under the new binomial nomenclature for viruses.
Sources
Paslay C, Ali A (2023) First report of potato yellow dwarf nucleorhabdovirus infecting pepper (Capsicum spp.) in Oklahoma. Plant Disease 107(early view). https://doi.org/10.1094/PDIS-01-23-0147-PDN