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Qiao N, Jiang M, Chen Y, Wang X, Chi W, Li S, Zhu X, Sun X. A Sequencing-Based Phylogenetic Analysis of Various Strains of Watermelon Silver Mottle Virus in Northern China and Their One-Step Detection Using Reverse Transcription Loop-Mediated Isothermal Amplification. PLANT DISEASE 2024; 108:1769-1775. [PMID: 38240655 DOI: 10.1094/pdis-09-23-1952-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Watermelon silver mottle virus (WSMoV), a potentially invasive virus, is known to reduce the yield and degrade the quality of infected crops in Cucurbitaceae and Solanaceae families, resulting in significant economic losses in limited areas of several Asian countries. WSMoV, previously detected on various crops in southern China, has now become more prevalent on watermelon and sweet pepper in the northern cities of China for the first time. A sequencing-based phylogenetic analysis has confirmed that the viral strains infecting cucumber, watermelon, and sweet pepper plants in Shandong Province are most closely related to those isolated from Guangdong, Guangxi, and Taiwan, suggesting a farther and continuous spread of WSMoV throughout China. To develop a fast, accurate, and practical protocol for WSMoV detection, we designed a set of primers from the conserved sequence of the WSMoV nucleocapsid protein (N) gene for a one-step assay based on reverse transcription loop-mediated isothermal amplification (RT-LAMP). The RT-LAMP assay was performed successfully for 50 min at 61°C and exhibited a highly specific result without cross-reactions with other similar viruses and a sensitivity that is 100-fold higher than that of the traditional RT-PCR. The confirmation of 26 WSMoV suspect samples collected from various regions in Shandong through the RT-LAMP testing has demonstrated that the assay is suitable and practical for detection of WSMoV in both laboratory and field settings.
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Affiliation(s)
- Ning Qiao
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Miao Jiang
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Yuxing Chen
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Xingcui Wang
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Wenjuan Chi
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Shoujie Li
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Xiaoping Zhu
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong, China
| | - Xiaoan Sun
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, Shandong, China
- Division of Plant Industry, Florida Department of Agriculture and Consumer Services, Gainesville, FL, U.S.A. (Retired)
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Zhang Z, Zheng K, Zhao L, Su X, Zheng X, Wang T. Occurrence, Distribution, Evolutionary Relationships, Epidemiology, and Management of Orthotospoviruses in China. Front Microbiol 2021; 12:686025. [PMID: 34421843 PMCID: PMC8371445 DOI: 10.3389/fmicb.2021.686025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/25/2021] [Indexed: 11/17/2022] Open
Abstract
Orthotospoviruses are responsible for serious crop losses worldwide. Orthotospoviral diseases have spread rapidly in China over the past 10 years and are now found in 19 provinces. Currently, 17 Orthotospovirus species have been reported in China, including eight newly identified species from this genus. The number of new highly pathogenic Orthotospovirus strains or species has increased, likely because of the virus species diversity, the wide range of available hosts, adaptation of the viruses to different climates, and multiple transmission routes. This review describes the distribution of Orthotospovirus species, host plants, typical symptoms of infection under natural conditions, the systemic infection of host plants, spatial clustering characteristics of virus particles in host cells, and the orthotospoviral infection cycle in the field. The evolutionary relationships of orthotospoviruses isolated from China and epidemiology are also discussed. In order to effectively manage orthotospoviral disease, future research needs to focus on deciphering the underlying mechanisms of systemic infection, studying complex/mixed infections involving the same or different Orthotospovirus species or other viruses, elucidating orthotospovirus adaptative mechanisms to multiple climate types, breeding virus-resistant plants, identifying new strains and species, developing early monitoring and early warning systems for plant infection, and studying infection transmission routes.
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Affiliation(s)
- Zhongkai Zhang
- Key Lab of Agricultural Biotechnology of Yunnan Province, Biotechnology and Germplasm Resources Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
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Zheng K, Chen TC, Wu K, Kang YC, Yeh SD, Zhang Z, Dong J. Characterization of a New Orthotospovirus from Chilli Pepper in Yunnan Province, China. PLANT DISEASE 2020; 104:1175-1182. [PMID: 32065571 DOI: 10.1094/pdis-09-19-1925-re] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chilli pepper (Capsicum annuum L.) is one of the most important crops in Yunnan Province, China. An orthotospovirus isolate 14YV855 was isolated from a diseased chilli pepper plant exhibiting yellow ringspots and necrosis on leaves in Shiping County, Honghe Hani and Yi Autonomous Prefecture, Yunnan Province in 2014. The complete genome sequence of 14YV855 was determined. The small, medium, and large RNAs are 3,428, 4,781, and 8,917 nucleotides long, respectively. The complete nucleocapsid (N) protein of 14YV855 shares a high amino acid identity of 84.8 to 89.9% to that of Capsicum chlorosis virus (CaCV), Groundnut bud necrosis virus (GBNV), Watermelon bud necrosis virus (WBNV), and Watermelon silver mottle virus (WSMoV), which is slightly less than the 90% identity threshold for the demarcation of new Orthotospovirus sp. Phylogenetic analyses revealed that the N protein and RNA-dependent RNA polymerase of 14YV855 are the most related to WSMoV, while the NSs, NSm, and Gn/Gc proteins are similar to those of GBNV. As expected, 14YV855 is serologically related to CaCV, GBNV, WBNV, and WSMoV when the monoclonal antibody against the N protein of WSMoV was used; however, 14YV855 can be distinguished from other orthotospoviruses by reverse-transcription PCR using the specific primers. Our results indicate that 14YV855 is a new Orthotospovirus sp. belonging to the WSMoV serogroup and is provisionally named Chilli yellow ringspot virus.
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Affiliation(s)
- Kuanyu Zheng
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Lab of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture. 2238# Beijing Rd, Wuhua Prefecture, Kunming 650205, Yunnan, P. R. China
| | - Tsung-Chi Chen
- Department of Biotechnology, Asia University, Wufeng, Taichung 41354, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Kuo Wu
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Lab of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture. 2238# Beijing Rd, Wuhua Prefecture, Kunming 650205, Yunnan, P. R. China
| | - Ya-Chi Kang
- Department of Biotechnology, Asia University, Wufeng, Taichung 41354, Taiwan
| | - Shyi-Dong Yeh
- Department of Plant Pathology, National Chung Hsing University, Taichung 402, Taiwan
| | - Zhongkai Zhang
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Lab of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture. 2238# Beijing Rd, Wuhua Prefecture, Kunming 650205, Yunnan, P. R. China
| | - Jiahong Dong
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Lab of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture. 2238# Beijing Rd, Wuhua Prefecture, Kunming 650205, Yunnan, P. R. China
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
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Characterization of a new isolate of pepper chlorotic spot virus from Yunnan province, China. Arch Virol 2017; 162:2809-2814. [DOI: 10.1007/s00705-017-3402-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 04/03/2017] [Indexed: 10/19/2022]
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Zhang Z, Zheng K, Dong J, Fang Q, Hong J, Wang X. Clustering and cellular distribution characteristics of virus particles of Tomato spotted wilt virus and Tomato zonate spot virus in different plant hosts. Virol J 2016; 13:11. [PMID: 26786326 PMCID: PMC4717642 DOI: 10.1186/s12985-016-0466-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 01/10/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Tomato spotted wilt virus (TSWV) and Tomato zonate spot virus (TZSV) are the two dominant species of thrip-transmitted tospoviruses, cause significant losses in crop yield in Yunnan and its neighboring provinces in China. TSWV and TZSV belong to different serogroup of tospoviruses but induce similar symptoms in the same host plant species, which makes diagnostic difficult. We used different electron microscopy preparing methods to investigate clustering and cellular distribution of TSWV and TZSV in the host plant species. RESULTS Negative staining of samples infected with TSWV and TZSV revealed that particles usually clustered in the vesicles, including single particle (SP), double particles clustering (DPC), triple particles clustering (TPC). In the immunogold labeling negative staining against proteins of TZSV, the antibodies against Gn protein were stained more strongly than the N protein. Ultrathin section and high pressure freeze (HPF)-electron microscopy preparations revealed that TSWV particles were distributed in the cisternae of endoplasmic reticulum (ER), filamentous inclusions (FI) and Golgi bodies in the mesophyll cells. The TSWV particles clustered as multiple particles clustering (MPC) and distributed in globular viroplasm or cisternae of ER in the top leaf cell. TZSV particles were distributed more abundantly in the swollen membrane of ER in the mesophyll cell than those in the phloem parenchyma cells and were not observed in the top leaf cell. However, TZSV virions were mainly present as single particle in the cytoplasm, with few clustering as MPC. CONCLUSION In this study, we identified TSWV and TZSV particles had the distinct cellular distribution patterns in the cytoplasm from different tissues and host plants. This is the first report of specific clustering characteristics of tospoviruses particles as well as the cellular distribution of TSWV particles in the FI and globular viroplasm where as TZSV particles inside the membrane of ER. These results indicated that tospoviruses particles possessed specific and similar clustering in the saps of diseased plants. Furthermore, the results of this study will also provide a basis for further study on the tospoviruses assembling, maturation and movement.
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Affiliation(s)
- Zhongkai Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P.R. China.
- Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650223, Yunnan, P.R. China.
| | - Kuanyu Zheng
- Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650223, Yunnan, P.R. China.
| | - Jiahong Dong
- Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650223, Yunnan, P.R. China.
| | - Qi Fang
- Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650223, Yunnan, P.R. China.
| | - Jian Hong
- Center of Analysis and Measurement, Zhejiang University, Hangzhou, 310058, P.R. China.
| | - Xifeng Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P.R. China.
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Rao X, Sun J. Development of SYBR Green I Based Real-Time RT-PCR Assay for Specific Detection of Watermelon silver mottle Virus. IRANIAN JOURNAL OF BIOTECHNOLOGY 2015; 13:20-24. [PMID: 28959295 DOI: 10.15171/ijb.1124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Watermelon silver mottle virus (WSMoV), which belongs to the genus Tospovirus, causes significant loss in Cucurbitaceae plants. OBJECTIVES Development of a highly sensitive and reliable detection method for WSMoV. MATERIALS AND METHODS Recombinant plasmids for targeting the sequence of nucleocapsid protein gene of WSMoV were constructed. SYBR Green I real-time PCR was established and evaluated with standard recombinant plasmids and 27 watermelon samples showing WSMoV infection symptoms. RESULTS The recombinant plasmid was used as template for SYBR Green I real-time PCR to generate standard and melting curves. Melting curve analysis indicated no primer-dimers and non-specific products in the assay. No cross-reaction was observed with Capsicum chlorosis virus (genus Tospovirus) and Cucumber mosaic virus (genus Cucumovirus). Repeatability tests indicated that inter-assay variability of the Ct values was 1.6%. CONCLUSIONS A highly sensitive, reliable and rapid detection method of SYBR Green I real-time PCR for timely detection of WSMoV plants and vector thrips was established, which will facilitate disease forecast and control.
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Affiliation(s)
- Xueqin Rao
- Department of Plant Pathology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.,Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China
| | - Jie Sun
- Department of Plant Pathology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.,Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China
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Meng J, Liu P, Zhu L, Zou C, Li J, Chen B. Complete Genome Sequence of Mulberry Vein Banding Associated Virus, a New Tospovirus Infecting Mulberry. PLoS One 2015; 10:e0136196. [PMID: 26291718 PMCID: PMC4546196 DOI: 10.1371/journal.pone.0136196] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/30/2015] [Indexed: 11/18/2022] Open
Abstract
Mulberry vein banding associated virus (MVBaV) that infects mulberry plants with typical vein banding symptoms had been identified as a tentative species of the genus Tospovirus based on the homology of N gene sequence to those of tospoviruses. In this study, the complete sequence of the tripartite RNA genome of MVBaV was determined and analyzed. The L RNA has 8905 nucleotides (nt) and encodes the putative RNA-dependent RNA polymerase (RdRp) of 2877 aa amino acids (aa) in the viral complementary (vc) strand. The RdRp of MVBaV shares the highest aa sequence identity (85.9%) with that of Watermelon silver mottle virus (WSMoV), and contains conserved motifs shared with those of the species of the genus Tospovirus. The M RNA contains 4731 nt and codes in ambisense arrangement for the NSm protein of 309 aa in the sense strand and the Gn/Gc glycoprotein precursor (GP) of 1,124 aa in the vc strand. The NSm and GP of MVBaV share the highest aa sequence identities with those of Capsicum chlorosis virus (CaCV) and Groundnut bud necrosis virus (GBNV) (83.2% and 84.3%, respectively). The S RNA is 3294 nt in length and contains two open reading frames (ORFs) in an ambisense coding strategy, encoding a 439-aa non-structural protein (NSs) and the 277-aa nucleocapsid protein (N), respectively. The NSs and N also share the highest aa sequence identity (71.1% and 74.4%, respectively) with those of CaCV. Phylogenetic analysis of the RdRp, NSm, GP, NSs, and N proteins showed that MVBaV is most closely related to CaCV and GBNV and that these proteins cluster with those of the WSMoV serogroup, and that MVBaV seems to be a species bridging the two subgroups within the WSMoV serogroup of tospoviruses in evolutionary aspect, suggesting that MVBaV represents a distinct tospovirus. Analysis of S RNA sequence uncovered the highly conserved 5’-/3’-ends and the coding regions, and the variable region of IGR with divergent patterns among MVBaV isolates.
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Affiliation(s)
- Jiaorong Meng
- College of Agriculture, Guangxi University, Nanning, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources (Guangxi University) and Key Laboratory of Ministry of Education of China for Microbial and Plant Genetic Engineering, Nanning, China
| | - Pingping Liu
- College of Agriculture, Guangxi University, Nanning, China
| | - Liling Zhu
- College of Agriculture, Guangxi University, Nanning, China
| | - Chengwu Zou
- College of Agriculture, Guangxi University, Nanning, China
| | - Jieqiu Li
- College of Agriculture, Guangxi University, Nanning, China
| | - Baoshan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources (Guangxi University) and Key Laboratory of Ministry of Education of China for Microbial and Plant Genetic Engineering, Nanning, China
- * E-mail:
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Yazhisai U, Rajagopalan PA, Raja JAJ, Chen TC, Yeh SD. Untranslatable tospoviral NSs fragment coupled with L conserved region enhances transgenic resistance against the homologous virus and a serologically unrelated tospovirus. Transgenic Res 2015; 24:635-49. [PMID: 25721329 DOI: 10.1007/s11248-015-9865-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 02/03/2015] [Indexed: 10/23/2022]
Abstract
Tospoviruses cause severe damages to important crops worldwide. In this study, Nicotiana benthamiana transgenic lines carrying individual untranslatable constructs comprised of the conserved region of the L gene (denoted as L), the 5' half of NSs coding sequence (NSs) or the antisense fragment of whole N coding sequence (N) of Watermelon silver mottle virus (WSMoV), individually or in combination, were generated. A total of 15-17 transgenic N. benthamiana lines carrying individual transgenes were evaluated against WSMoV and the serologically unrelated Tomato spotted wilt virus (TSWV). Among lines carrying single or chimeric transgenes, the level of resistance ranged from susceptible to completely resistant against WSMoV. From the lines carrying individual transgenes and highly resistant to WSMoV (56-63% of lines assayed), 30% of the L lines (3/10 lines assayed) and 11% of NSs lines (1/9 lines assayed) were highly resistant against TSWV. The chimeric transgenes provided higher degrees of resistance against WSMoV (80-88%), and the NSs fragment showed an additive effect to enhance the resistance to TSWV. Particularly, the chimeric transgenes with the triple combination of fragments, namely L/NSs/N or HpL/NSs/N (a hairpin construct), provided a higher degree of resistance (both 50%, with 7/14 lines assayed) against TSWV. Our results indicate that the untranslatable NSs fragment is able to enhance the transgenic resistance conferred by the L conserved region. The better performance of L/NSs/N and HpL/NSs/N in transgenic N. benthamiana lines suggests their potential usefulness in generating high levels of enhanced transgenic resistance against serologically unrelated tospoviruses in agronomic crops.
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Affiliation(s)
- Uthaman Yazhisai
- Department of Plant Pathology, College of Agriculture and Natural Resource, National Chung Hsing University, 250-Kuo-Kuang Road, Taichung, 40227, Taiwan, ROC
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Huang CH, Hsiao WR, Huang CW, Chen KC, Lin SS, Chen TC, Raja JAJ, Wu HW, Yeh SD. Two Novel Motifs of Watermelon Silver Mottle Virus NSs Protein Are Responsible for RNA Silencing Suppression and Pathogenicity. PLoS One 2015; 10:e0126161. [PMID: 25993336 PMCID: PMC4439075 DOI: 10.1371/journal.pone.0126161] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 03/30/2015] [Indexed: 12/02/2022] Open
Abstract
The NSs protein of Watermelon silver mottle virus (WSMoV) is the RNA silencing suppressor and pathogenicity determinant. In this study, serial deletion and point-mutation mutagenesis of conserved regions (CR) of NSs protein were performed, and the silencing suppression function was analyzed through agroinfiltration in Nicotiana benthamiana plants. We found two amino acid (aa) residues, H113 and Y398, are novel functional residues for RNA silencing suppression. Our further analyses demonstrated that H113 at the common epitope (CE) ((109)KFTMHNQ(117)), which is highly conserved in Asia type tospoviruses, and the benzene ring of Y398 at the C-terminal β-sheet motif ((397)IYFL(400)) affect NSs mRNA stability and protein stability, respectively, and are thus critical for NSs RNA silencing suppression. Additionally, protein expression of other six deleted (ΔCR1-ΔCR6) and five point-mutated (Y15A, Y27A, G180A, R181A and R212A) mutants were hampered and their silencing suppression ability was abolished. The accumulation of the mutant mRNAs and proteins, except Y398A, could be rescued or enhanced by co-infiltration with potyviral suppressor HC-Pro. When assayed with the attenuated Zucchini yellow mosaic virus vector in squash plants, the recombinants carrying individual seven point-mutated NSs proteins displayed symptoms much milder than the recombinant carrying the wild type NSs protein, suggesting that these aa residues also affect viral pathogenicity by suppressing the host silencing mechanism.
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Affiliation(s)
- Chung-Hao Huang
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Weng-Rong Hsiao
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Ching-Wen Huang
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Kuan-Chun Chen
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Shih-Shun Lin
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan
| | - Tsung-Chi Chen
- Department of Biotechnology, Asia University, Wufeng, Taichung, 41354, Taiwan
| | - Joseph A. J. Raja
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
- NCHU-UCD Plant and Food Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
| | - Hui-Wen Wu
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Shyi-Dong Yeh
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
- NCHU-UCD Plant and Food Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
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Yin Y, Zheng K, Dong J, Fang Q, Wu S, Wang L, Zhang Z. Identification of a new tospovirus causing necrotic ringspot on tomato in China. Virol J 2014; 11:213. [PMID: 25465801 PMCID: PMC4263035 DOI: 10.1186/s12985-014-0213-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Accepted: 11/24/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Emerging tospoviruses cause significant yield losses and quality reduction in vegetables, ornamentals, and legumes throughout the world. So far, eight tospoviruses were reported in China. Tomato fruits displaying necrotic and concentric ringspot symptoms were found in Guizhou province of southwest China. FINDING ELISA experiments showed that crude saps of the diseased tomato fruit samples reacted with antiserum against Tomato zonate spot virus (TZSV). Electron microscopy detected presence of quasi-spherical, enveloped particles of 80-100 nm in such saps. The putative virus isolate was designated 2009-GZT. Mechanical back-inoculation showed that 2009-GZT could infect systemically some solanaceous crop and non-crop plants including Capiscum annuum, Datura stramonium, Nicotiana benthamiana, N. rustica, N. tabacum and Solanum lycopersicum. The 3012 nt full-length sequence of 2009-GZT S RNA shared 68.2% nt identity with that of Calla lily chlorotic spot virus (CCSV), the highest among all compared viruses. This RNA was predicted to encode a non-structural protein (NSs) (459 aa, 51.7 kDa) and a nucleocapsid protein (N) (278 aa, 30.3 kDa). The N protein shared 85.8% amino acid identity with that of CCSV. The NSs protein shared 82.7% amino acid identity with that of Tomato zonate spot virus(TZSV). CONCLUSION Our results indicate that the isolate 2009-GZT is a new species of Tospovirus, which is named Tomato necrotic spot virus (TNSV). This finding suggests that a detailed survey in China is warranted to further understand the occurrence and distribution of tospoviruses.
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Affiliation(s)
- Yueyan Yin
- Yunnan Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Biotechnology and Germplasm Resources Institute, Ministry of Agriculture, Yunnan Academy of Agricultural Sciences, Kunming, 650223, China.
- Institute of Alpine Economic Plants, Yunnan Academy of Agricultural Sciences, Lijiang, 674100, China.
| | - Kuanyu Zheng
- Yunnan Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Biotechnology and Germplasm Resources Institute, Ministry of Agriculture, Yunnan Academy of Agricultural Sciences, Kunming, 650223, China.
| | - Jiahong Dong
- Yunnan Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Biotechnology and Germplasm Resources Institute, Ministry of Agriculture, Yunnan Academy of Agricultural Sciences, Kunming, 650223, China.
| | - Qi Fang
- Yunnan Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Biotechnology and Germplasm Resources Institute, Ministry of Agriculture, Yunnan Academy of Agricultural Sciences, Kunming, 650223, China.
| | - Shiping Wu
- Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China.
| | - Lishuang Wang
- Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China.
| | - Zhongkai Zhang
- Yunnan Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Biotechnology and Germplasm Resources Institute, Ministry of Agriculture, Yunnan Academy of Agricultural Sciences, Kunming, 650223, China.
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