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Villamor DEV, Pillai SS, Eastwell KC. Systemic infection and symptom development of agro-inoculated cDNA clone of cherry rusty mottle-associated virus in sweet cherry (Prunus avium). Virus Res 2021; 296:198330. [PMID: 33556414 DOI: 10.1016/j.virusres.2021.198330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/16/2021] [Accepted: 01/24/2021] [Indexed: 01/25/2023]
Abstract
Cherry rusty mottle-associated virus (CRMaV), which belongs the genus Robigovirus of the family Betaflexiviridae, is strongly associated with cherry rusty mottle disease of sweet cherry, Prunus avium. Here, we report on the successful development of an Agrobacterium-based inoculation system for a cloned CRMaV cDNA construct. Agro-inoculation of virus-free cherry rootstock 'Krymsk6' [P. cerasus x (P. cerasus x P. maackii)] resulted in the development of chlorotic yellow mottle symptoms on systemic leaves beginning at 50 days post inoculation. The presence of CRMaV in 'Krymsk6' agro-inoculated plants was confirmed by RT-PCR and ELISA. Subsequently, CRMaV from agro-inoculated 'Krymsk6' was graft-transmissible onto virus-free sweet cherry rootstock P. avium 'Mazzard' as evidenced by the production of typical cherry rusty mottle symptoms beginning at 35 days post grafting, and further confirmed by western blotting and RT-PCR. These results showed conclusively that CRMaV is the causal agent of cherry rusty mottle disease in sweet cherry. The reverse genetic system presented in this study can be used as a tool to investigate the molecular biology of CRMaV and also a template for infectious clone development for other viruses in the genus Robigovirus.
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Affiliation(s)
- D E V Villamor
- Washington State University, Department of Plant Pathology, Irrigated Agriculture Research and Extension Center, Prosser, WA, 99350, United States.
| | - S S Pillai
- Washington State University, Department of Plant Pathology, Irrigated Agriculture Research and Extension Center, Prosser, WA, 99350, United States
| | - K C Eastwell
- Washington State University, Department of Plant Pathology, Irrigated Agriculture Research and Extension Center, Prosser, WA, 99350, United States
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Choi GW, Oh JP, Cho IS, Ju HK, Hu WX, Kim B, Seo EY, Park JS, Domier LL, Hammond J, Song K, Lim HS. Full-Length Infectious Clones of Two New Isolates of Tomato Mosaic Virus Induce Distinct Symptoms Associated with Two Differential Amino Acid Residues in 128-kDa Protein. THE PLANT PATHOLOGY JOURNAL 2019; 35:538-542. [PMID: 31632228 PMCID: PMC6788407 DOI: 10.5423/ppj.nt.12.2018.0286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 06/02/2019] [Accepted: 06/10/2019] [Indexed: 06/10/2023]
Abstract
In 2017, two new tomato mosaic virus (ToMV) isolates were collected from greenhouses in Buyeo, Chungcheongnam-do, South Korea. Full-length cDNAs of the new ToMV isolates were cloned into dual cauliflower mosaic virus 35S and T7 promoter-driven vectors, sequenced and their pathogenicities investigated. The nucleotide sequences of isolates GW1 (MH507165) and GW2 (MH507166) were 99% identical, resulting in only two amino acid differences in nonconserved region II and the helicase domain, Ile668Thr and Val834Ile. The two isolates were most closely related to a ToMV isolate from Taiwan (KJ207374). Isolate GW1 (Ile668, Val834) induced a systemic hypersensitive response in Nicotiana benthamiana compared with the isolate GW2, which a single residue substitution showed was due to Val834.
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Affiliation(s)
- Go-Woon Choi
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - June-Pyo Oh
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - In-Sook Cho
- Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365,
Korea
| | - Hye-Kyoung Ju
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - Wen-Xing Hu
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - Boram Kim
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - Eun-Young Seo
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - Jong-Seok Park
- Department of Horticulture, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
| | - Leslie L Domier
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801,
USA
| | - John Hammond
- United States Department of Agriculture-Agricultural Research Service, Floral and Nursery Plants Research Unit, Beltsville, MD 20705,
USA
| | - Kihak Song
- Department of Urology, Chungnam National University School of Medicine, Daejeon 34134,
Korea
| | - Hyoun-Sub Lim
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134,
Korea
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