Location: Crop Diseases, Pests and Genetics Research
Title: Identification and molecular characterization of Dahlia common mosaic virus from a new potential host, silphium sppAuthor
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Zhai, Ying |
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GNANASEKARAN, PRABU - Washington State University |
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IFTIKHAR, ROMANA - University Of Agriculture, Faisalabad |
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TURNER, KATHRYN - The Land Institute |
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VAN TASSEL, DAVID - The Land Institute |
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CASSETTA, ERIC - The Land Institute |
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LUBIN, TERRA - University Of Kansas |
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HANU, PAPPU - Washington State University |
Submitted to: Phytobiomes Journal
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 3/20/2024 Publication Date: 5/31/2024 Citation: Zhai, Y., Gnanasekaran, P., Iftikhar, R., Turner, K., Van Tassel, D., Cassetta, E., Lubin, T., Hanu, P.R. 2024. Identification and molecular characterization of Dahlia common mosaic virus from a new potential host, silphium spp. Phytobiomes Journal. https://doi.org/10.1094/PHYTOFR-12-23-0156-SC. DOI: https://doi.org/10.1094/PHYTOFR-12-23-0156-SC Interpretive Summary: Silphium plants can tolerate extensive stress and withstand in high-pressure situations, such as drought and cold temperature in the winter. Since 2018, symptoms suggestive of virus infection were observed in several silphium plants in Saline County, Kansas. Symptoms included veinal chlorosis or clearing (often in widened veins), stunting, and twisted, narrowed, or toothed leaf distortion. We found the presence of dahlia common mosaic virus (DCMV) from the silphium plant, and this virus is widely prevalent in cultivated dahlia, an ornamental flowering plant. Based on the finding of DCMV in silphium it appears that the host range of DCMV includes plant species other than dahlia. Technical Abstract: Dahlia common mosaic virus (DCMV) was previously reported to infect only dahlias (Dahlia variabilis). However, DCMV was identified for the first time in association with Silphium spp. The complete genome of DCMV was cloned and sequenced from naturally occurring symptomatic silphium plants grown in Kansas, USA. The two DCMV silphium isolates sequenced showed over 98% sequence identity with those reported from dahlia (Dahlia variabilis). The Dahlia variabilis endogenous pararetroviral sequence (DvEPRS) was also detected in all 19 silphium samples tested in this study suggesting that DvEPRS may exist as an integrated sequence in the silphium genome as well. Our findings indicate that the host range of DCMV appears to include other plant species besides dahlia. |