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Yan D, Han K, Lu Y, Peng J, Rao S, Wu G, Liu Y, Chen J, Zheng H, Yan F. The nanovirus U2 protein suppresses RNA silencing via three conserved cysteine residues. MOLECULAR PLANT PATHOLOGY 2024; 25:e13394. [PMID: 37823358 PMCID: PMC10782648 DOI: 10.1111/mpp.13394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/13/2023]
Abstract
Nanoviruses have multipartite, circular, single-stranded DNA genomes and cause huge production losses in legumes and other crops. No viral suppressor of RNA silencing (VSR) has yet been reported from a member of the genus Nanovirus. Here, we demonstrate that the nanovirus U2 protein is a VSR. The U2 protein of milk vetch dwarf virus (MDV) suppressed the silencing of the green fluorescent protein (GFP) gene induced by single-stranded and double-stranded RNA, and the systemic spread of the GFP silencing signal. An electrophoretic mobility shift assay showed that the U2 protein was able to bind double-stranded 21-nucleotide small interfering RNA (siRNA). The cysteine residues at positions 43, 79 and 82 in the MDV U2 protein are critical to its nuclear localization, self-interaction and siRNA-binding ability, and were essential for its VSR activity. In addition, expression of the U2 protein via a potato virus X vector induced more severe necrosis symptoms in Nicotiana benthamiana leaves. The U2 proteins of other nanoviruses also acted as VSRs, and the three conserved cysteine residues were indispensable for their VSR activity.
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Affiliation(s)
- Dankan Yan
- College of Life SciencesFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
- Institute of Plant Protection and Agro‐Products SafetyAnhui Academy of Agricultural SciencesHefeiChina
| | - Kelei Han
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
- Institute of Plant Protection and Agro‐Products SafetyAnhui Academy of Agricultural SciencesHefeiChina
| | - Yuwen Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Jiejun Peng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Shaofei Rao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Guanwei Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Yong Liu
- Institute of Plant ProtectionHunan Academy of Agricultural SciencesChangshaChina
| | - Jianping Chen
- College of Life SciencesFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Hongying Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Fei Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐Products, Institute of Plant VirologyNingbo UniversityNingboChina
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2
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Wu R, Wu G, Huang Y, Zhang H, Tang J, Li M, Qing L. vsiRNA18 derived from tobacco curly shoot virus can regulate virus infection in Nicotiana benthamiana. MOLECULAR PLANT PATHOLOGY 2023; 24:466-473. [PMID: 36797647 PMCID: PMC10098052 DOI: 10.1111/mpp.13310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 05/03/2023]
Abstract
Virus-derived small interfering RNAs (vsiRNAs) play important roles in regulating host endogenous gene expression to promote virus infection and induce RNA silencing to suppress virus infection. However, to date, how vsiRNAs affect geminivirus infection in host plants has been less studied. In this study, we found that tobacco curly shoot virus (TbCSV)-derived vsiRNA18 (TvsiRNA18) can regulate TbCSV infection in Nicotiana benthamiana plants. The virus-mediated small RNA expression system and stable transformation technique were used to clarify the molecular role of TvsiRNA18 in TbCSV infection. The results indicate that TvsiRNA18 can aggravate disease symptoms in these plants and enhance viral DNA accumulation. ATP-dependent RNA helicase (ATP-dRH) was proven to be a target of TvsiRNA18, and down-regulation of ATP-dRH in plants was shown to induce virus-like leaf curling symptoms and increase TbCSV infection. These results suggest that TvsiRNA18 is an important regulator of TbCSV infection by suppressing ATP-dRH expression. This is the first report to demonstrate that TbCSV-derived vsiRNA can target host endogenous genes to affect symptom development, which helps to reveal the molecular mechanism of symptom occurrence after the virus infects the host.
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Affiliation(s)
- Rui Wu
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
| | - Gentu Wu
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
| | - Yongjie Huang
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
| | - Haolan Zhang
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
| | - Jiaxin Tang
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
| | - Mingjun Li
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
| | - Ling Qing
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant ProtectionSouthwest UniversityChongqingChina
- National Citrus Engineering Research CenterSouthwest UniversityChongqingChina
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3
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Chen X, Zhao Y, Laborda P, Yang Y, Liu F. Molecular Cloning and Characterization of a Serotonin N-Acetyltransferase Gene, xoSNAT3, from Xanthomonas oryzae pv. oryzae. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1865. [PMID: 36767232 PMCID: PMC9914633 DOI: 10.3390/ijerph20031865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/12/2023] [Accepted: 01/15/2023] [Indexed: 06/18/2023]
Abstract
Rice bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzae (Xoo), is one of the top ten bacterial plant diseases worldwide. Serotonin N-acetyltransferase (SNAT) is one of the key rate-limiting enzymes in melatonin (MT) biosynthesis. However, its function in pathogenic bacteria remains unclear. In this study, a Xoo SNAT protein (xoSNAT3) that showed 27.39% homology with sheep SNAT was identified from a collection of 24 members of GCN5-related N-acetyltransferase (GNAT) superfamily in Xoo. This xoSNAT3 could be induced by MT. In tobacco-based transient expression system, xoSNAT3 was found localized on mitochondria. In vitro studies indicated that xoSNAT3 showed the optima enzymatic activity at 50 °C. The recombinant enzyme showed Km and Vmax values of 709.98 μM and 2.21 nmol/min/mg protein, respectively. Mutant △xoSNAT3 showed greater impaired MT biosynthesis than the wild-type strain. Additionally, △xoSNAT3 showed 14.06% less virulence and 26.07% less biofilm formation. Collectively, our results indicated that xoSNAT3 services as a SNAT involved in MT biosynthesis and pathogenicity in Xoo.
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Affiliation(s)
- Xian Chen
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection, Ministry of Agriculture and Rural Affairs, Zhejiang Provincial Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety—State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
| | - Yancun Zhao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety—State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
| | - Pedro Laborda
- School of Life Sciences, Nantong University, Nantong 226001, China
| | - Yong Yang
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection, Ministry of Agriculture and Rural Affairs, Zhejiang Provincial Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety—State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
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4
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Jiang L, Lu Y, Zheng X, Yang X, Chen Y, Zhang T, Zhao X, Wang S, Zhao X, Song X, Zhang X, Peng J, Zheng H, Lin L, MacFarlane S, Liu Y, Chen J, Yan F. The plant protein NbP3IP directs degradation of Rice stripe virus p3 silencing suppressor protein to limit virus infection through interaction with the autophagy-related protein NbATG8. THE NEW PHYTOLOGIST 2021; 229:1036-1051. [PMID: 32898938 DOI: 10.1111/nph.16917] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 06/02/2020] [Indexed: 05/06/2023]
Abstract
In plants, autophagy is involved in responses to viral infection. However, the role of host factors in mediating autophagy to suppress viruses is poorly understood. A previously uncharacterized plant protein, NbP3IP, was shown to interact with p3, an RNA-silencing suppressor protein encoded by Rice stripe virus (RSV), a negative-strand RNA virus. The potential roles of NbP3IP in RSV infection were examined. NbP3IP degraded p3 through the autophagy pathway, thereby affecting the silencing suppression activity of p3. Transgenic overexpression of NbP3IP conferred resistance to RSV infection in Nicotiana benthamiana. RSV infection was promoted in ATG5- or ATG7-silenced plants and was inhibited in GAPC-silenced plants where autophagy was activated, confirming the role of autophagy in suppressing RSV infection. NbP3IP interacted with NbATG8f, indicating a potential selective autophagosomal cargo receptor role for P3IP. Additionally, the rice NbP3IP homolog (OsP3IP) also mediated p3 degradation and interacted with OsATG8b and p3. Through identification of the involvement of P3IP in the autophagy-mediated degradation of RSV p3, we reveal a new mechanism to antagonize the infection of RSV, and thereby provide the first evidence that autophagy can play an antiviral role against negative-strand RNA viruses.
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Affiliation(s)
- Liangliang Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Yuwen Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Xiyin Zheng
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Xue Yang
- College of Plant Protection, Shenyang Agriculture University, Shenyang, 110161, China
| | - Ying Chen
- College of Plant Protection, Shenyang Agriculture University, Shenyang, 110161, China
| | - Tianhao Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xing Zhao
- College of Plant Protection, Shenyang Agriculture University, Shenyang, 110161, China
| | - Shu Wang
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Xia Zhao
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xijiao Song
- Public Lab, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xiangxiang Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Jiejun Peng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Hongying Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Lin Lin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Stuart MacFarlane
- Cell and Molecular Sciences Group, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK
| | - Yule Liu
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Jianping Chen
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Fei Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
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5
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Chen B, Lin L, Lu Y, Peng J, Zheng H, Yang Q, Rao S, Wu G, Li J, Chen Z, Song B, Chen J, Yan F. Ubiquitin-Like protein 5 interacts with the silencing suppressor p3 of rice stripe virus and mediates its degradation through the 26S proteasome pathway. PLoS Pathog 2020; 16:e1008780. [PMID: 32866188 PMCID: PMC7485977 DOI: 10.1371/journal.ppat.1008780] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 09/11/2020] [Accepted: 07/06/2020] [Indexed: 02/03/2023] Open
Abstract
Ubiquitin like protein 5 (UBL5) interacts with other proteins to regulate their function but differs from ubiquitin and other UBLs because it does not form covalent conjugates. Ubiquitin and most UBLs mediate the degradation of target proteins through the 26S proteasome but it is not known if UBL5 can also do that. Here we found that the UBL5s of rice and Nicotiana benthamiana interacted with rice stripe virus (RSV) p3 protein. Silencing of NbUBL5s in N. benthamiana facilitated RSV infection, while UBL5 overexpression conferred resistance to RSV in both N. benthamiana and rice. Further analysis showed that NbUBL5.1 impaired the function of p3 as a suppressor of silencing by degrading it through the 26S proteasome. NbUBL5.1 and OsUBL5 interacted with RPN10 and RPN13, the receptors of ubiquitin in the 26S proteasome. Furthermore, silencing of NbRPN10 or NbRPN13 compromised the degradation of p3 mediated by NbUBL5.1. Together, the results suggest that UBL5 mediates the degradation of RSV p3 protein through the 26S proteasome, a previously unreported plant defense strategy against RSV infection.
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Affiliation(s)
- Binghua Chen
- Center for Research and Development of Fine Chemicals, Guizhou University, China
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lin Lin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Yuwen Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Jiejun Peng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Hongying Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Qiankun Yang
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Shaofei Rao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Guanwei Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Junmin Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
| | - Zhuo Chen
- Center for Research and Development of Fine Chemicals, Guizhou University, China
| | - Baoan Song
- Center for Research and Development of Fine Chemicals, Guizhou University, China
| | - Jianping Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Fei Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, China
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6
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Sun M, Jiang K, Li C, Du J, Li M, Ghanem H, Wu G, Qing L. Tobacco curly shoot virus C3 protein enhances viral replication and gene expression in Nicotiana benthamiana plants. Virus Res 2020; 281:197939. [PMID: 32198077 DOI: 10.1016/j.virusres.2020.197939] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/10/2020] [Accepted: 03/14/2020] [Indexed: 11/24/2022]
Abstract
Geminiviruses are single-stranded DNA viruses that cause devastating diseases in many crops worldwide. The replication enhancer proteins (REn), encoded by the C3 (AC3, and AL3) ORFs of geminiviruses, have critical roles in viral DNA accumulation and symptom development in infected plants. In the current study, we have constructed an infectious clone of the Tobacco curly shoot virus (TbCSV) C3 mutant, TbCSVΔC3, that contains two start codon mutations that abrogated C3 ORF expression, but did not alter the amino acid sequence of the C2 ORF. As predicted, the absence of the C3 protein reduced TbCSV DNA accumulation, and over-expression of the C3 protein enhanced TbCSV DNA accumulation in infected leaves of Nicotiana benthamiana. The C3 mutation reduced the expression levels of both virion- and complementary-sense TbCSV genes whereas over-expression of the C3 protein increased TbCSV gene expression. Furthermore, the expression of the wild-type and site-directed mutants of C3 proteins using the potato virus X (PVX) system showed that Y93A mutation reduced the replication enhancement activity of the C3 protein in N. benthamiana. All the available evidence demonstrates that the C3 protein is tightly coupled with TbCSV DNA accumulation. However, the TbCSVΔC3 mutant was nearly as infectious in N. benthamiana as TbCSVWT and only had slightly delayed and attenuated symptom expression. Our findings demonstrate that TbCSV C3 protein enhances viral replication and gene expression, but has only moderate effects on symptom development in N. benthamiana.
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Affiliation(s)
- Miao Sun
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Kairong Jiang
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Chunji Li
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Jiang Du
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Mingjun Li
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Hussein Ghanem
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Gentu Wu
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
| | - Ling Qing
- Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, 400716, China.
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7
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Yang X, Lu Y, Wang F, Chen Y, Tian Y, Jiang L, Peng J, Zheng H, Lin L, Yan C, Taliansky M, MacFarlane S, Wu Y, Chen J, Yan F. Involvement of the chloroplast gene ferredoxin 1 in multiple responses of Nicotiana benthamiana to Potato virus X infection. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:2142-2156. [PMID: 31872217 PMCID: PMC7094082 DOI: 10.1093/jxb/erz565] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/20/2019] [Indexed: 05/14/2023]
Abstract
The chloroplast protein ferredoxin 1 (FD1), with roles in the chloroplast electron transport chain, is known to interact with the coat proteins (CPs) of Tomato mosaic virus and Cucumber mosaic virus. However, our understanding of the roles of FD1 in virus infection remains limited. Here, we report that the Potato virus X (PVX) p25 protein interacts with FD1, whose mRNA and protein levels are reduced by PVX infection or by transient expression of p25. Silencing of FD1 by Tobacco rattle virus-based virus-induced gene silencing (VIGS) promoted the local and systemic infection of plants by PVX. Use of a drop-and-see (DANS) assay and callose staining revealed that the permeability of plasmodesmata (PDs) was increased in FD1-silenced plants together with a consistently reduced level of PD callose deposition. After FD1 silencing, quantitative reverse transcription-real-time PCR (qRT-PCR) analysis and LC-MS revealed these plants to have a low accumulation of the phytohormones abscisic acid (ABA) and salicylic acid (SA), which contributed to the decreased callose deposition at PDs. Overexpression of FD1 in transgenic plants manifested resistance to PVX infection, but the contents of ABA and SA, and the PD callose deposition were not increased in transgenic plants. Overexpression of FD1 interfered with the RNA silencing suppressor function of p25. These results demonstrate that interfering with FD1 function causes abnormal plant hormone-mediated antiviral processes and thus enhances PVX infection.
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Affiliation(s)
- Xue Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
- Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Department of Plant Protection, Shenyang Agriculture University, Shenyang, China
| | - Yuwen Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Fang Wang
- Ningbo Academy of Agricultural Sciences, Ningbo, China
| | - Ying Chen
- Department of Plant Protection, Shenyang Agriculture University, Shenyang, China
| | - Yanzhen Tian
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Liangliang Jiang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
- Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jiejun Peng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Hongying Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Lin Lin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Chengqi Yan
- Ningbo Academy of Agricultural Sciences, Ningbo, China
| | - Michael Taliansky
- The James Hutton Institute, Cell and Molecular Sciences Group, Invergowrie, Dundee, UK
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the RAS, Moscow, Russia
| | - Stuart MacFarlane
- The James Hutton Institute, Cell and Molecular Sciences Group, Invergowrie, Dundee, UK
| | - Yuanhua Wu
- Department of Plant Protection, Shenyang Agriculture University, Shenyang, China
| | - Jianping Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
- Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Department of Plant Protection, Shenyang Agriculture University, Shenyang, China
| | - Fei Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
- Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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8
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Peng H, Pu Y, Yang X, Wu G, Qing L, Ma L, Sun X. Overexpression of a pathogenesis-related gene NbHIN1 confers resistance to Tobacco Mosaic Virus in Nicotiana benthamiana by potentially activating the jasmonic acid signaling pathway. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 283:147-156. [PMID: 31128684 DOI: 10.1016/j.plantsci.2019.02.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/18/2019] [Accepted: 02/25/2019] [Indexed: 05/02/2023]
Abstract
Harpin proteins secreted by plant-pathogenic gram-negative bacteria induce diverse plant defenses against different pathogens. Harpin-induced 1 (HIN1) gene highly induced in tobacco after application of Harpin protein is involved in a common plant defense pathway. However, the role of HIN1 against Tobacco mosaic virus (TMV) remains unknown. In this study, we functionally characterized the Nicotiana benthamiana HIN1 (NbHIN1) gene and generated the transgenic tobacco overexpressing the NbHIN1 gene. In a subcellular localization experiment, we found that NbHIN1 localized in the plasma membrane and cytosol. Overexpression of NbHIN1 did not lead to observed phenotype compared to wild type tobacco plant. However, the NbHIN1 overexpressing tobacco plant exhibited significantly enhanced resistance to TMV infection. Moreover, RNA-sequencing revealed the transcriptomic profiling of NbHIN1 overexpression and highlighted the primary effects on the genes in the processes related to biosynthesis of amino acids, plant-pathogen interaction and RNA transport. We also found that overexpression of NbHIN1 highly induced the expression of NbRAB11, suggesting that jasmonic acid signaling pathway might be involved in TMV resistance. Taken together, for the first time we demonstrated that overexpressing a pathogenesis-related gene NbHIN1 in N. benthamiana significantly enhances the TMV resistance, providing a potential mechanism that will enable us to engineer tobacco with improved TMV resistance in the future.
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Affiliation(s)
- Haoran Peng
- College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Yundan Pu
- College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Xue Yang
- College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Gentu Wu
- College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Ling Qing
- College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Lisong Ma
- College of Plant Protection, Hebei Agriculture University, Baoding 071001, China; Division of Plant Science, Research School of Biology, The Australian National University, ACT, Acton, 2601, Australia.
| | - Xianchao Sun
- College of Plant Protection, Southwest University, Chongqing 400716, China.
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Zhang T, Zhao X, Jiang L, Yang X, Chen Y, Song X, Lu Y, Peng J, Zheng H, Wu Y, MacFarlane S, Chen J, Yan F. p15 encoded by Garlic virus X is a pathogenicity factor and RNA silencing suppressor. J Gen Virol 2018; 99:1515-1521. [PMID: 30207520 DOI: 10.1099/jgv.0.001144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Garlic virus X (GarVX) encodes a 15 kDa cysteine-rich protein (CRP). To investigate the function(s) of p15, its subcellular localization, role as a symptom determinant and capacity to act as a viral suppressor of RNA silencing (VSR) were analysed. Results showed that GFP-tagged p15 was distributed in the cytoplasm, nucleus and nucleolus. Expression of p15 from PVX caused additional systemic foliar malformation and led to increased accumulation of PVX, showing that p15 is a virulence factor for reconstructed PVX-p15. Moreover, using a transient agro-infiltration patch assay and a Turnip crinkle virus (TCV) movement complementation assay, it was demonstrated that p15 possesses weak RNA silencing suppressor activity. Removal of an amino acid motif resembling a nuclear localization signal (NLS) prevented p15 from accumulating in the nucleus but did not abolish its silencing suppression activity. This study provides the first insights into the multiple functions of the GarVX p15 protein.
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Affiliation(s)
- Tianhao Zhang
- 1College of Plant Protection, Shenyang Agriculture University, Shenyang 110161, Liaoning, PR China
| | - Xing Zhao
- 1College of Plant Protection, Shenyang Agriculture University, Shenyang 110161, Liaoning, PR China
| | - Liangliang Jiang
- 2Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
- 3State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
- 4College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xue Yang
- 1College of Plant Protection, Shenyang Agriculture University, Shenyang 110161, Liaoning, PR China
| | - Ying Chen
- 1College of Plant Protection, Shenyang Agriculture University, Shenyang 110161, Liaoning, PR China
| | - Xijiao Song
- 5Public Lab, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Yuwen Lu
- 2Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
- 3State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Jiejun Peng
- 2Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
- 3State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Hongying Zheng
- 2Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
- 3State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Yuanhua Wu
- 1College of Plant Protection, Shenyang Agriculture University, Shenyang 110161, Liaoning, PR China
| | - Stuart MacFarlane
- 6The James Hutton Institute, Cell and Molecular Sciences Group, Invergowrie, Dundee DD2 5DA, UK
| | - Jianping Chen
- 2Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
- 3State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Fei Yan
- 2Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
- 3State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
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10
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Jiang S, Jiang L, Yang J, Peng J, Lu Y, Zheng H, Lin L, Chen J, Yan F. Over-expression of Oryza sativa Xrn4 confers plant resistance to virus infection. Gene 2018; 639:44-51. [PMID: 28987346 DOI: 10.1016/j.gene.2017.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/30/2017] [Accepted: 10/03/2017] [Indexed: 11/25/2022]
Abstract
Plant Xrn4 is a cytoplasmic 5' to 3' exoribonuclease that is reported to play an antiviral role during viral infection as demonstrated by experiments using the Xrn4s of Nicotiana benthamiana and Arabidopsis thaliana. Meanwhile, little is known about the anti-viral activity of Xrn4 from other plants. Here, we cloned the cytoplasmic Xrn4 gene of Oryza sativa (OsXrn4), and demonstrated that its over-expression elevated the 5'-3' exoribonuclease activity in rice plants and conferred resistance to rice stripe virus, a negative-sense RNA virus causing serious losses in East Asia. The accumulation of viral RNAs was also decreased. Moreover, the ectopic expression of OsXrn4 in N. benthamiana also conferred plant resistance to tobacco mosaic virus infection. These results show that the monocotyledonous plant cytoplasmic Xrn4 also has an antiviral role and thus provides a strategy for producing transgenic plants resistant to viral infection.
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Affiliation(s)
- Shanshan Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Liangliang Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Yang
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jiejun Peng
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yuwen Lu
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Hongying Zheng
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Lin Lin
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jianping Chen
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Fei Yan
- Stake Key laboratory Breeding Base for Sustainable Control of Pest and Disease, MOA and Zhejiang Provincial Key Laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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11
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Lu Y, Yin M, Wang X, Chen B, Yang X, Peng J, Zheng H, Zhao J, Lin L, Yu C, MacFarlane S, He J, Liu Y, Chen J, Dai L, Yan F. The unfolded protein response and programmed cell death are induced by expression of Garlic virus X p11 in Nicotiana benthamiana. J Gen Virol 2016; 97:1462-1468. [PMID: 27011387 DOI: 10.1099/jgv.0.000460] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Garlic virus X (GarVX) ORF3 encodes a p11 protein, which contributes to virus cell-to-cell movement and forms granules on the endoplasmic reticulum (ER) in Nicotiana benthamiana. Expression of p11 either from a binary vector, PVX or TMV induced ER stress and the unfolded protein response (UPR), as demonstrated by an increase in transcription of the ER luminal binding protein (BiP) and bZIP60 genes. UPR-related programmed cell death (PCD) was elicited by PVX : p11 or TMV : p11 in systemic infected leaves. Examination of p11 mutants with deletions of two transmembrane domains (TM) revealed that both were required for generating granules and for inducing necrosis. TRV-based VIGS was used to investigate the correlation between bZIP60 expression and p11-induced UPR-related PCD. Less necrosis was observed on local and systemic leaves of bZIP60 knockdown plants when infected with PVXp11, suggesting that bZIP60 plays an important role in the UPR-related PCD response to p11 in N. benthamiana.
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Affiliation(s)
- Yuwen Lu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Mingyuan Yin
- Tibet Agricultural and Animal Husbandry College, Linzhi 860000, PR China
| | - Xiaodan Wang
- Virus-free Seedling Research Institute of Heilongjiang Academy of Agricultural Sciences, No. 368, Xuefu Road, Harbin 150086, PR China
| | - Binghua Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering of Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Xue Yang
- Department of Plant Protection, Shenyang Agriculture University, Shenyang 110161, PR China
| | - Jiejun Peng
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Hongying Zheng
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Jinping Zhao
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Lin Lin
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Chulang Yu
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Stuart MacFarlane
- The James Hutton Institute, Cell and Molecular Sciences Group, Invergowrie, Dundee DD2 5DA, UK
| | - Jianqing He
- Tibet Agricultural and Animal Husbandry College, Linzhi 860000, PR China
| | - Yong Liu
- Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha, PR China
| | - Jianping Chen
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Liangying Dai
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China
| | - Fei Yan
- State Key laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
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12
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Shi B, Lin L, Wang S, Guo Q, Zhou H, Rong L, Li J, Peng J, Lu Y, Zheng H, Yang Y, Chen Z, Zhao J, Jiang T, Song B, Chen J, Yan F. Identification and regulation of host genes related to Rice stripe virus symptom production. THE NEW PHYTOLOGIST 2016; 209:1106-19. [PMID: 26487490 DOI: 10.1111/nph.13699] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 08/28/2015] [Indexed: 05/11/2023]
Abstract
Viral infections cause plant chlorosis, stunting, necrosis or other symptoms. The down-regulation of chloroplast-related genes (ChRGs) is assumed to be responsible for chlorosis. We identified the differentially expressed genes (DEGs) in Rice stripe virus (RSV)-infected Nicotiana benthamiana, and examined the contribution of 75 down-regulated DEGs to RSV symptoms by silencing them one by one using Tobacco rattle virus (TRV)-induced gene silencing. Silencing of 11 of the 75 down-regulated DEGs caused plant chlorosis, and nine of the 11 were ChRGs. Silencing of a down-regulated DEG encoding the eukaryotic translation initiation factor 4A (eIF4A) caused leaf-twisting and stunting that were visible on RSV-infected N. benthamiana. A region of RSV RNA4 was complementary to part of eIF4A mRNA and virus-derived small interfering (vsiRNAs) from that region were present in infected N. benthamiana. When expressed as artificial microRNAs, those vsiRNAs could target NbeIF4A mRNA for regulation. We provide experimental evidence supporting the association of ChRGs with chlorosis and show that eIF4A is involved in RSV symptom development. This is also the first report demonstrating that siRNA derived directly from a plant virus can target a host gene for regulation.
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Affiliation(s)
- Bingbin Shi
- School of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Lin Lin
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Shihui Wang
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Qin Guo
- Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Hong Zhou
- School of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Lingling Rong
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Junmin Li
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Jiejun Peng
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Yuwen Lu
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Hongying Zheng
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Yong Yang
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Zhuo Chen
- Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Jinping Zhao
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Tong Jiang
- School of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Baoan Song
- Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Jianping Chen
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Fei Yan
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
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13
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Li J, Xiang CY, Yang J, Chen JP, Zhang HM. Interaction of HSP20 with a viral RdRp changes its sub-cellular localization and distribution pattern in plants. Sci Rep 2015; 5:14016. [PMID: 26359114 PMCID: PMC4642574 DOI: 10.1038/srep14016] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/13/2015] [Indexed: 11/09/2022] Open
Abstract
Small heat shock proteins (sHSPs) perform a fundamental role in protecting cells against a wide array of stresses but their biological function during viral infection remains unknown. Rice stripe virus (RSV) causes a severe disease of rice in Eastern Asia. OsHSP20 and its homologue (NbHSP20) were used as baits in yeast two-hybrid (YTH) assays to screen an RSV cDNA library and were found to interact with the viral RNA-dependent RNA polymerase (RdRp) of RSV. Interactions were confirmed by pull-down and BiFC assays. Further analysis showed that the N-terminus (residues 1-296) of the RdRp was crucial for the interaction between the HSP20s and viral RdRp and responsible for the alteration of the sub-cellular localization and distribution pattern of HSP20s in protoplasts of rice and epidermal cells of Nicotiana benthamiana. This is the first report that a plant virus or a viral protein alters the expression pattern or sub-cellular distribution of sHSPs.
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Affiliation(s)
- Jing Li
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Cong-Ying Xiang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China
| | - Jian Yang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jian-Ping Chen
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Heng-Mu Zhang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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14
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Jiang S, Lu Y, Li K, Lin L, Zheng H, Yan F, Chen J. Heat shock protein 70 is necessary for Rice stripe virus infection in plants. MOLECULAR PLANT PATHOLOGY 2014; 15:907-17. [PMID: 24823923 PMCID: PMC6638618 DOI: 10.1111/mpp.12153] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Heat shock proteins 70 (HSP70s) are a highly conserved family of genes in eukaryotes, and are involved in a remarkable variety of cellular processes. In many plant positive-stranded RNA viruses, HSP70 participates in the construction of a viral replication complex and plays various roles during viral infection. Here, we found increased expression of HSP70 following infection by Rice stripe virus (RSV), a negative-stranded RNA virus, in both rice (the natural host) and Nicotiana benthamiana (an experimental host). Heat treatment of N. benthamiana (Nb) plants enhanced viral infection, whereas RSV infection was retarded and viral RNAs accumulated at a low level when HSP70 was silenced. In both bimolecular fluorescence complement and in vitro pull-down assays, the N-terminus of RSV RNA-dependent RNA polymerase (RdRp) interacted and co-localized with the HSP70s of both plants (OsHSP70 and NbHSP70). The localization of the N-terminus of RdRp when expressed alone was not obviously different from when it was co-expressed with OsHSP or NbHSP, and vice versa. RSV infection also had no effect on the localization of host HSP70. These results demonstrate that host HSP70 is necessary for RSV infection and probably plays a role in viral replication by interacting with viral RdRp, which provides the first evidence of an interacting host protein related to RSV replication, which has been little studied to date.
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Affiliation(s)
- Shanshan Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China; State Key Laboratory Breeding Base for Sustainable Control of Plant Pest and Disease, Ministry of China Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
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15
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Characterization of homologous and heterologous interactions between viroplasm proteins P6 and P9-1 of the fijivirus southern rice black-streaked dwarf virus. Arch Virol 2014; 160:453-7. [PMID: 25377635 DOI: 10.1007/s00705-014-2268-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Accepted: 10/24/2014] [Indexed: 10/24/2022]
Abstract
P6 of southern rice black-streaked dwarf virus (SRBSDV) is a multifunctional protein that is involved in the formation of viroplasms by interacting with P5-1. Here, we used yeast two-hybrid and bimolecular fluorescence complementation assays to show that there were homologous and heterologous interactions between SRBSDV P6 and P9-1 in yeast and plant cells. Mutational analysis showed that the N-terminal region (residues 1-93) of P6 was necessary for the interaction between P6 and P9-1. Self-interactions only occurred between the full-length P6 or P9-1. P9-1 was able to form viroplasm-like inclusion structures alone in the absence of other viral proteins.
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16
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Rong L, Lu Y, Lin L, Zheng H, Yan F, Chen J. A transmembrane domain determines the localization of rice stripe virus pc4 to plasmodesmata and is essential for its function as a movement protein. Virus Res 2014; 183:112-6. [PMID: 24560843 DOI: 10.1016/j.virusres.2014.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 11/26/2022]
Abstract
The pc4 protein encoded by rice stripe virus (RSV) is a viral movement protein (MP). A transmembrane (TM) domain spanning AAs 106-123 of pc4 was identified and shown to be essential for localization of pc4 to plasmodesmata (PD) (but not to chloroplasts) and for its ability to recover the movement of movement-deficient PVX. Analysis of alanine-scanning mutants showed that M116A and G120A had a similar localization to wild type pc4, being localized at PD and chloroplasts, but all other mutants were only localized at chloroplasts and not at PD. Mutants that could not be localized at PD had little (G123A) or no ability to recover PVX-GFPΔp25 movement, indicating that PD localization is crucial for the function of pc4 as a movement protein. Strangely, mutants M116A and G120A localized at PD and retained the ability to bind single-stranded RNA but did not support PVX-GFPΔp25 movement, indicating that properties other than PD localization and nucleotide binding ability may be needed for the function of pc4 as a movement protein.
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Affiliation(s)
- Lingling Rong
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China
| | - Yuwen Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of China Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Lin Lin
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of China Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Hongying Zheng
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of China Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Fei Yan
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of China Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Jianping Chen
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of China Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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17
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Nucleo-cytoplasmic shuttling of VPg encoded by Wheat yellow mosaic virus requires association with the coat protein. J Gen Virol 2013; 94:2790-2802. [DOI: 10.1099/vir.0.055830-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
VPg (virus protein, genome-linked) is a multifunctional protein that plays important roles in viral multiplication in the cytoplasm. However, a number of VPgs encoded by plant viruses target the nucleus and this appears to be biologically significant. These VPgs may therefore be translocated between nuclear and cytoplasmic compartments during virus infection, but such nucleo-cytoplasmic transport has not been demonstrated. We report that VPg encoded by Wheat yellow mosaic virus (WYMV, genus Bymovirus, family Potyviridae) accumulated in both the nucleus and cytoplasm of infected cells, but localized exclusively in the nucleus when expressed alone in plants. Computational analyses predicted the presence of a nuclear localization signal (NLS) and a nuclear export signal (NES) in WYMV VPg. Mutational analyses showed that both the N-terminal and the NLS domains of VPg contribute to the efficiency of nuclear targeting. In vitro and in planta assays indicated that VPg interacts with WYMV coat protein (CP) and proteinase 1 (P1) proteins. Observation of VPg fused to a fluorescent protein and subcellular fractionation experiments showed that VPg was translocated to the cytoplasm when co-expressed with CP, but not with P1. Mutations in the NES domain or treatment with leptomycin B prevented VPg translocation to the cytoplasm when co-expressed with CP. Our results suggest that association with CP facilitates the nuclear export of VPg during WYMV infection.
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Sun Z, Yang D, Xie L, Sun L, Zhang S, Zhu Q, Li J, Wang X, Chen J. Rice black-streaked dwarf virus P10 induces membranous structures at the ER and elicits the unfolded protein response in Nicotiana benthamiana. Virology 2013; 447:131-9. [PMID: 24210107 DOI: 10.1016/j.virol.2013.09.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 07/13/2013] [Accepted: 09/01/2013] [Indexed: 01/07/2023]
Abstract
Endoplasmic reticular (ER) membrane modifications play an important role in viral RNA replication and virion assembly but little is known about the involvement of ER-membrane remodeling in the infection cycle of fijiviruses in plant cells. The subcellular localization of Rice black-streaked dwarf virus outer capsid P10 was therefore examined using live-cell imaging. P10 fused to eGFP formed vesicular structures associated with ER membranes in Nicotiana benthamiana epidermal cells and in rice protoplasts. Subcellular fractionation experiments confirmed that P10 is an integral membrane protein. Three predicted transmembrane domains and two less-well-defined domains were each able to target eGFP to the ER. Disruption of the actin cytoskeleton with LatB, indicated that the maintenance of P10-induced membrane structures required the intact actin cytoskeleton. P10 induced the expression of ER stress marker genes, including ER stress-related chaperones and transcription factor, indicating that RBSDV P10 triggers ER stress and the unfolded protein response.
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Affiliation(s)
- Zongtao Sun
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of Agriculture Key Laboratory of Biotechnology in Plant Protection, Zhejiang Provincial key laboratory of Plant Virology, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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Arkhipov AV, Gushchin VA, Vishnichenko VK, Solovyev AG. Accumulation of changes in the genome of shallot virus X persisting in vegetatively reproduced plants. DOKL BIOCHEM BIOPHYS 2013; 452:237-40. [DOI: 10.1134/s1607672913050049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Indexed: 11/23/2022]
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Li J, Xue J, Zhang HM, Yang J, Lv MF, Xie L, Meng Y, Li PP, Chen JP. Interactions between the P6 and P5-1 proteins of southern rice black-streaked dwarf fijivirus in yeast and plant cells. Arch Virol 2013; 158:1649-59. [PMID: 23474918 DOI: 10.1007/s00705-013-1660-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 01/13/2013] [Indexed: 11/26/2022]
Abstract
Southern rice black-streaked dwarf virus (SRBSDV) is a recently described member of the genus Fijivirus, family Reoviridae. The roles of the proteins encoded by the SRBSDV genome have rarely been studied. In a yeast two-hybrid (YTH) assay in which SRBSDV P6, a putatively multifunctional protein, was used as bait and an SRBSDV cDNA library was used as prey, there was a strong interaction between the P6 and P5-1 proteins. The interaction was confirmed by bimolecular fluorescence complement (BiFC) assay in plant cells. YTH analysis using truncated mutants showed that the N-terminal region (amino acids 9-231) of P5-1 is necessary for binding P5-1 to P6 and that the N-terminal fragment (amino acids 1-93) of P6 is necessary for its interaction with P5-1. SRBSDV P5-1 formed granules positioned at the cell periphery in Nicotiana benthamiana leaves; P6 was present in both the cytoplasm and the nucleus and formed punctate bodies associated with the cell periphery. Immunogold labeling showed that both P6 and P5-1 localized within viroplasms in infected cells of rice plants. These results suggest that the interaction between P5-1 and P6 of SRBSDV may be involved in the formation of viroplasms.
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Affiliation(s)
- Jing Li
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Plant Protection and Biotechnology, Ministry of Agriculture, China
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Sun Z, Zhang S, Xie L, Zhu Q, Tan Z, Bian J, Sun L, Chen J. The secretory pathway and the actomyosin motility system are required for plasmodesmatal localization of the P7-1 of rice black-streaked dwarf virus. Arch Virol 2013; 158:1055-64. [PMID: 23271163 DOI: 10.1007/s00705-012-1585-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 11/19/2012] [Indexed: 10/27/2022]
Abstract
Rice black-streaked dwarf virus (RBSDV), a plant-infecting reovirus (genus Fijivirus), generally induces virus-containing tubules in infected cells. The nonstructural protein P7-1, encoded by the first open reading frame of segment 7, is involved in forming the structural matrix of these tubules. In experiments to investigate the subcellular localization of P7-1 in Nicotiana benthamiana epidermal cells, fluorescence of P7-1:eGFP was observed in the nucleus, cytoplasm and cell periphery, and in punctate points along the cell wall of plasmolyzed cells. Co-localization with plasmodesmata-located protein 1 showed that P7-1 formed the punctate points at plasmodesmata. Mutational analysis demonstrated that transmembrane domain 1 and adjacent residues were necessary and sufficient for P7-1 to form punctate structures at the cell wall in the plasmolyzed cells. Chemical drug and protein inhibitor treatments indicated that P7-1 utilized the ER-to-Golgi secretory pathway and the actomyosin motility system for its intracellular transport. The plasmodesmatal localization of RBSDV P7-1 is therefore dependent on the secretory pathway and the actomyosin motility system.
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Affiliation(s)
- Zongtao Sun
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Ministry of Agriculture Key Laboratory of Biotechnology in Plant Protection, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, People's Republic of China
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Yan F, Lu Y, Lin L, Zheng H, Chen J. The ability of PVX p25 to form RL structures in plant cells is necessary for its function in movement, but not for its suppression of RNA silencing. PLoS One 2012; 7:e43242. [PMID: 22916231 PMCID: PMC3420909 DOI: 10.1371/journal.pone.0043242] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 07/18/2012] [Indexed: 12/29/2022] Open
Abstract
The p25 triple gene block protein of Potato virus X (PVX) is multifunctional, participating in viral movement and acting as a suppressor of RNA silencing. The cell-to-cell movement of PVX is known to depend on the suppression function of p25. GFP-fused p25 accumulates in rod-like (RL) structures with intense fluorescence in cells. By monitoring the location of fluorescence at different times, we have now shown that the RL structure is composed of filaments. P25 mutants without the conditional ability to recover movement function could not form RL structures while the mutants that had the ability did form the structure, suggesting that the ability of p25 to form RL structures is necessary for its function in cell-to-cell movement, but not for its suppressor function. Moreover, chemical inhibition of microfilaments in cells destroyed the formation of the complete RL structure. Additionally, TGBp2 and TGBp3 were recruited into the RL structure, suggesting a relationship between the TGBps in virus movement.
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Affiliation(s)
- Fei Yan
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Biotechnology in Plant Protection (Ministry of China), Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yuwen Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Biotechnology in Plant Protection (Ministry of China), Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lin Lin
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Biotechnology in Plant Protection (Ministry of China), Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hongying Zheng
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Biotechnology in Plant Protection (Ministry of China), Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jianping Chen
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Biotechnology in Plant Protection (Ministry of China), Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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Yan F, Lu Y, Wu G, Peng J, Zheng H, Lin L, Chen J. A simplified method for constructing artificial microRNAs based on the osa-MIR528 precursor. J Biotechnol 2012; 160:146-50. [PMID: 22465291 DOI: 10.1016/j.jbiotec.2012.02.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2011] [Revised: 02/23/2012] [Accepted: 02/24/2012] [Indexed: 11/30/2022]
Abstract
Artificial miRNAs (amiRNAs) have been used successfully in various plants to silence endogenous genes or viral RNAs. The method of Schwab et al., widely used to construct amiRNAs, requires four PCRs. We describe a simplified method of constructing amiRNA based on the osa-MIR528 backbone using one PCR step by addition of prolonging sequence to the primers. The length of prolonging sequence needed in the osa-MIR528 precursor was determined. Using this method, we constructed amiRNA targeting the Nicotiana benthamiana UPF1 gene and showed that it functioned in silencing UPF1 expression in leaves when expressed transiently.
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Affiliation(s)
- Fei Yan
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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