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Olmedo-Velarde A, Park AC, Sugano J, Uchida JY, Kawate M, Borth WB, Hu JS, Melzer MJ. Characterization of Ti Ringspot-Associated Virus, a Novel Emaravirus Associated with an Emerging Ringspot Disease of Cordyline fruticosa. PLANT DISEASE 2019; 103:2345-2352. [PMID: 31306086 DOI: 10.1094/pdis-09-18-1513-re] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ti ringspot is an emerging foliar disease of the ti plant (Cordyline fruticosa) in Hawaii that is quickly spreading throughout the islands. Symptoms include small chlorotic ringspots on leaves that often coalesce to form larger lesions. Although several virus species have been discovered in symptomatic plants, none have been associated with these symptoms. Here, we report and characterize a novel virus closely associated with ti ringspot symptoms in Hawaii. The presence of double membrane bodies approximately 85 nm in diameter in symptomatic cells and sequence analyses of five genomic RNA segments obtained by high-throughput sequencing indicate that this virus is most closely related to members of the plant virus genus Emaravirus. Phylogenetic and sequence homology analyses place this virus on a distinct clade within the Emaravirus genus along with High Plains wheat mosaic emaravirus, blue palo verde broom virus, and Raspberry leaf blotch emaravirus. Sequence identity values with taxonomically relevant proteins indicate that this represents a new virus species, which we are tentatively naming ti ringspot-associated virus (TiRSaV). TiRSaV-specific reverse transcription PCR assays detected the virus in several experimental herbaceous host species following mechanical inoculation. TiRSaV was also detected in eriophyid mites collected from symptomatic ti plants, which may represent a putative arthropod vector of the virus.
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Affiliation(s)
- Alejandro Olmedo-Velarde
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - Adam C Park
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - Jari Sugano
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - Janice Y Uchida
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - Michael Kawate
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - Wayne B Borth
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - John S Hu
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
| | - Michael J Melzer
- Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
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Zhang J, Dey KK, Lin B, Borth WB, Melzer MJ, Sether D, Wang Y, Wang IC, Shen H, Pu X, Sun D, Hu JS. Characterization of Canna yellow mottle virus in a New Host, Alpinia purpurata, in Hawaii. PHYTOPATHOLOGY 2017; 107:791-799. [PMID: 28430018 DOI: 10.1094/phyto-04-16-0160-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Canna yellow mottle virus (CaYMV) is an important badnavirus infecting Canna spp. worldwide. This is the first report of CaYMV in flowering ginger (Alpinia purpurata) in Hawaii, where it is associated with yellow mottling and necrosis of leaves, vein streaking, and stunted plants. We have sequenced CaYMV in A. purpurata (CaYMV-Ap) using a combination of next-generation sequencing and traditional Sanger sequencing techniques. The complete genome of CaYMV-Ap was 7,120 bp with an organization typical of other Badnavirus species. Our results indicated that CaYMV-Ap was present in the episomal form in infected flowering ginger. We determined that this virus disease is prevalent in Hawaii and could potentially have significant economic impact on the marketing of A. purpurata as cut flowers. There is a potential concern that the host range of CaYMV-Ap may expand to include other important tropical plants.
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Affiliation(s)
- Jingxin Zhang
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Kishore K Dey
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Birun Lin
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Wayne B Borth
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Michael J Melzer
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Diane Sether
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Yanan Wang
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - I-Chin Wang
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Huifang Shen
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Xiaoming Pu
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Dayuan Sun
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - John S Hu
- First, third, ninth, tenth, and eleventh authors: Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China; first, second, fourth, fifth, sixth, seventh, eighth, and twelfth authors: Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu; and seventh author: College of Plant Protection, Agricultural University of Hebei, Baoding, China
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Zhang J, Borth WB, Lin B, Dey KK, Melzer MJ, Shen H, Pu X, Sun D, Hu JS. Deep sequencing of banana bract mosaic virus from flowering ginger (Alpinia purpurata) and development of an immunocapture RT-LAMP detection assay. Arch Virol 2016; 161:1783-95. [PMID: 27038825 DOI: 10.1007/s00705-016-2830-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 03/14/2016] [Indexed: 10/22/2022]
Abstract
Banana bract mosaic virus (BBrMV) has never been reported in banana plants in Hawaii. In 2010, however, it was detected in a new host, flowering ginger (Alpinia purpurata). In this study, we characterize the A. purpurata isolate and study its spread in flowering ginger in Hawaii. A laboratory study demonstrated that BBrMV could be transmitted from flowering ginger to its natural host, banana, therefore raising a serious concern about the potential risk to the rapidly growing banana industry of Hawaii. To quickly monitor this virus in the field, we developed a robust immunocapture reverse transcription loop-mediated isothermal amplification (IC-RT-LAMP) assay. Deep sequencing of the BBrMV isolate from A. purpurata revealed a single-stranded RNA virus with a genome of 9,713 nt potentially encoding a polyprotein of 3,124 aa, and another predicted protein, PIPO, in the +2 reading-frame shift. Most of the functional motifs in the Hawaiian isolate were conserved among the genomes of isolates from one found in the Philippines and India. However, the A. purpurata isolate had an amino acid deletion in the Pl protein that was most similar to the Philippine isolate. Phylogenetic analysis of an eastern Pacific subpopulation that included A. purpurata was closest in genetic distance to a Southeast Asian subpopulation, suggesting frequent gene flow and supporting the hypothesis that the A. purpurata isolate arrived in Hawaii from Southeast Asia.
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Affiliation(s)
- Jingxin Zhang
- Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI, USA
- Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Wayne B Borth
- Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI, USA
| | - Birun Lin
- Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Kishore K Dey
- Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI, USA
| | - Michael J Melzer
- Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI, USA
| | - Huifang Shen
- Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Xiaoming Pu
- Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Dayuan Sun
- Key Laboratory of New Technique for Plant Protection in Guangdong, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - John S Hu
- Department of Plant and Environmental Protection Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI, USA.
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Melzer M, Ayin C, Sugano J, Uchida J, Kawate M, Borth W, Hu J. Differentiation and distribution of cordyline viruses 1-4 in Hawaiian ti plants (Cordyline fruticosa L.). Viruses 2013; 5:1655-63. [PMID: 23881274 PMCID: PMC3738953 DOI: 10.3390/v5071655] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 06/15/2013] [Accepted: 06/26/2013] [Indexed: 11/18/2022] Open
Abstract
Common green ti plants (Cordyline fruticosa L.) in Hawaii can be infected by four recently characterized closteroviruses that are tentative members of the proposed genus Velarivirus. In this study, a reverse-transcription polymerase chain reaction (RT-PCR) assay developed to detect and distinguish Cordyline virus 1 (CoV-1), CoV-2, CoV-3, and CoV-4 was used to determine: (i) the distribution of these viruses in Hawaii; and (ii) if they are involved in the etiology of ti ringspot disease. One hundred and thirty-seven common green ti plants with and without ti ringspot symptoms were sampled from 43 sites on five of the Hawaiian Islands and underwent the RT-PCR assay. Eleven ornamental ti varieties were also sampled and assayed. Based on this survey, it appears none of the CoVs are involved in the etiology of ti ringspot. The observation of a non-uniform geographic distribution of the CoVs in common green ti, combined with the presence of CoVs in seed-derived ornamental varieties, suggests active vector transmission. Eight herbarium specimens collected between 1903 and 2003 from plants on the island of Oahu also underwent the RT-PCR assay. Amplifiable RNA was isolated from accessions collected in 1985 or later, however only the 2003 accession was found to harbor CoVs.
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Affiliation(s)
- Michael Melzer
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3190 Maile Way, Honolulu, HI 96822, USA; E-Mails: (C.A); (J.U.); (M.K.); (W.B.); (J.H.)
| | - Caleb Ayin
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3190 Maile Way, Honolulu, HI 96822, USA; E-Mails: (C.A); (J.U.); (M.K.); (W.B.); (J.H.)
| | - Jari Sugano
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 45-260 Waikalua Road, Kaneohe, HI 96744, USA; E-Mail:
| | - Janice Uchida
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3190 Maile Way, Honolulu, HI 96822, USA; E-Mails: (C.A); (J.U.); (M.K.); (W.B.); (J.H.)
| | - Michael Kawate
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3190 Maile Way, Honolulu, HI 96822, USA; E-Mails: (C.A); (J.U.); (M.K.); (W.B.); (J.H.)
| | - Wayne Borth
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3190 Maile Way, Honolulu, HI 96822, USA; E-Mails: (C.A); (J.U.); (M.K.); (W.B.); (J.H.)
| | - John Hu
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3190 Maile Way, Honolulu, HI 96822, USA; E-Mails: (C.A); (J.U.); (M.K.); (W.B.); (J.H.)
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