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Do DH, Ngo XT, Yeh SD. The Generation of Attenuated Mutants of East Asian Passiflora Virus via Deletion and Mutation in the N-Terminal Region of the HC-Pro Gene for Control through Cross-Protection. Viruses 2024; 16:1231. [PMID: 39205205 PMCID: PMC11359188 DOI: 10.3390/v16081231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/19/2024] [Accepted: 07/29/2024] [Indexed: 09/04/2024] Open
Abstract
East Asian Passiflora virus (EAPV) causes passionfruit woodiness disease, a major threat limiting passionfruit production in eastern Asia, including Taiwan and Vietnam. In this study, an infectious cDNA clone of a Taiwanese severe isolate EAPV-TW was tagged with a green fluorescent protein (GFP) reporter to monitor the virus in plants. Nicotiana benthamiana and yellow passionfruit plants inoculated with the construct showed typical symptoms of EAPV-TW. Based on our previous studies on pathogenicity determinants of potyviral HC-Pros, a deletion of six amino acids (d6) alone and its association with a point mutation (F8I, simplified as I8) were conducted in the N-terminal region of the HC-Pro gene of EAPV-TW to generate mutants of EAPV-d6 and EAPV-d6I8, respectively. The mutant EAPV-d6I8 caused infection without conspicuous symptoms in N. benthamiana and yellow passionfruit plants, while EAPV-d6 still induced slight leaf mottling. EAPV-d6I8 was stable after six passages under greenhouse conditions and displayed a zigzag pattern of virus accumulation, typical of a beneficial protective virus. The cross-protection effectiveness of EAPV-d6I8 was evaluated in both N. benthamiana and yellow passionfruit plants under greenhouse conditions. EAPV-d6I8 conferred complete cross-protection (100%) against the wild-type EAPV-TW-GFP in both N. benthamiana and yellow passionfruit plants, as verified by no severe symptoms, no fluorescent signals, and PCR-negative status for GFP. Furthermore, EAPV-d6I8 also provided complete protection against Vietnam's severe strain EAPV-GL1 in yellow passionfruit plants. Our results indicate that the attenuated mutant EAPV-d6I8 has great potential to control EAPV in Taiwan and Vietnam via cross-protection.
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Affiliation(s)
- Duy-Hung Do
- Department of Plant Pathology, National Chung Hsing University, Taichung 402, Taiwan;
- Plant Pathology Division, Plant Protection Research Institute, Hanoi 10000, Vietnam
| | - Xuan-Tung Ngo
- Department of Horticulture, National Chung Hsing University, Taichung 402, Taiwan;
| | - Shyi-Dong Yeh
- Department of Plant Pathology, National Chung Hsing University, Taichung 402, Taiwan;
- Advanced Plant and Food Crops Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
- Overseas Vietnam Agricultural Science and Technology Innovation Center, National Chung Hsing University, Taichung 402, Taiwan
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Garcêz RM, Chaves ALR, Eiras M, Meletti LMM, de Azevedo Filho JA, da Silva LA, Colariccio A. Survey of aphid population in a yellow passion fruit crop and its relationship on the spread Cowpea aphid-borne mosaic virus in a subtropical region of Brazil. SPRINGERPLUS 2015; 4:537. [PMID: 26413443 PMCID: PMC4579199 DOI: 10.1186/s40064-015-1263-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 08/21/2015] [Indexed: 11/11/2022]
Abstract
Background Passion fruit woodiness may be caused by Cowpea aphid-borne mosaic virus (CABMV) and is currently the major passion fruit disease in Brazil. To assess the virus-vector-host interactions, a newly introduced golden passion fruit plantation located in eastern region of São Paulo State, Brazil, was monitored. Methods Dissemination of CABMV was determined analyzing golden passion fruit plants monthly for 18 months by PTA-ELISA. Seasonality and aphid fauna diversity was determined by identification of the captured species using yellow sticky, yellow water-pan and green tile traps. Population composition of the aphid species was determined using the descriptive index of occurrence, dominance and general classification and overlap of species in the R program. Results Analyses of species grouping afforded to recognize 14 aphid species. The genus Aphis represented 55.42 % of the species captured. Aphid species formed two distinct clusters, one of which was characterized by the diversity of polyphagous species that presented high potential to spread CABMV. Conclusion The low abundance and diversity of aphid species did not interfere negatively in the CABMV epidemiology. The genus Aphis, particularly Aphis fabae/solanella and A. gossypii, was crucial in the spread of CABMV in passion fruit orchards in the eastern State of São Paulo.
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Affiliation(s)
- Renata Maia Garcêz
- Laboratório de Fitovirologia e Fisiopatologia (LFF), Instituto Biológico (IB), São Paulo, SP Brazil
| | | | - Marcelo Eiras
- Laboratório de Fitovirologia e Fisiopatologia (LFF), Instituto Biológico (IB), São Paulo, SP Brazil
| | - Laura Maria Molina Meletti
- Instituto Agronômico de Campinas (IAC), Centro de Pesquisa e Desenvolvimento de Recursos Genéticos Vegetais (CPDRGV), Campinas, SP Brazil
| | | | - Leonardo Assis da Silva
- Laboratório de Fitovirologia e Fisiopatologia (LFF), Instituto Biológico (IB), São Paulo, SP Brazil
| | - Addolorata Colariccio
- Laboratório de Fitovirologia e Fisiopatologia (LFF), Instituto Biológico (IB), São Paulo, SP Brazil
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Jose RFDM, Antonia DRF, Charles NM, Antonio CDO. Recent characterization of cowpea aphid-borne mosaic virus (CABMV) in Bahia State, Brazil, suggests potential regional isolation. ACTA ACUST UNITED AC 2015. [DOI: 10.5897/ajb2015.14409] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Ochwo-Ssemakula M, Sengooba T, Hakiza JJ, Adipala E, Edema R, Redinbaugh MG, Aritua V, Winter S. Characterization and Distribution of a Potyvirus Associated with Passion Fruit Woodiness Disease in Uganda. PLANT DISEASE 2012; 96:659-665. [PMID: 30727515 DOI: 10.1094/pdis-03-11-0263] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This article describes the incidence and etiology of a viral disease of passion fruit in Uganda. Symptoms, including those characteristic of passion fruit woodiness disease (PWD), were observed on 32% of plants in producing areas. Electron microscopic observations of infected tissues revealed flexuous filaments of ca. 780 nm. Enzymelinked immunosorbent assays indicated a serological relationship with Cowpea aphid-borne mosaic virus (CABMV) and Passion fruit ringspot virus (PFRSV). In host range studies, only species in the families Solanaceae and Chenopodiaceae were susceptible, and neither Vigna unguiculata nor Phaseolus vulgaris became infected. Coat protein (CP) gene sequences of eight isolates exhibited features typical of potyviruses and were highly similar (88 to 100% identity). However, the sequences had limited sequence identity with CP genes of two of the three potyviruses reported to cause PWD: East Asian Passiflora virus and Passion fruit woodiness virus (PWV). Deduced amino acid sequences for the CP of isolates from Uganda had highest identity with Bean common mosaic necrosis virus (BCMNV) (72 to 79%, with evolutionary divergence values between 0.17 and 0.19) and CABMV (73 to 76%, with divergence values between 0.21 and 0.25). Based on these results and in accordance with International Committee for Taxonomy of Viruses criteria for species demarcation in the family Potyviridae, we conclude that a previously unreported virus causes viral diseases on passion fruit in Uganda. The name "Ugandan Passiflora virus" is proposed for this virus.
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Affiliation(s)
- M Ochwo-Ssemakula
- Department of Agricultural Production, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - T Sengooba
- International Food Policy Research Institute, P.O. Box 28565, Kampala, Uganda
| | - J J Hakiza
- National Agricultural Research Laboratories, Kampala, Uganda
| | - E Adipala
- Regional Universities Forum for Capacity Building in Agriculture, P.O. Box 7062, Kampala, Uganda
| | - R Edema
- Department of Crop Science, Makerere University, Kampala, Uganda
| | - M G Redinbaugh
- USDA, ARS Corn and Soybean Research Unit, and Department of Plant Pathology, The Ohio State University, OARDC, 1680 Madison Avenue, Wooster, OH 44691, USA
| | - V Aritua
- National Agricultural Biotechnology Centre, National Agricultural Research Laboratories, P.O. Box 7065, Kampala, Uganda, and Department of Plant Pathology, Kansas State University, 4024 Throckmorton Plant Sciences Center, Manhattan, KS 66506, USA
| | - S Winter
- Plant Virus Department, Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Messeweg 11/12, Braunschweig 38104, Germany
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Gibbs AJ, Ohshima K, Phillips MJ, Gibbs MJ. The prehistory of potyviruses: their initial radiation was during the dawn of agriculture. PLoS One 2008; 3:e2523. [PMID: 18575612 PMCID: PMC2429970 DOI: 10.1371/journal.pone.0002523] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Accepted: 05/19/2008] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Potyviruses are found world wide, are spread by probing aphids and cause considerable crop damage. Potyvirus is one of the two largest plant virus genera and contains about 15% of all named plant virus species. When and why did the potyviruses become so numerous? Here we answer the first question and discuss the other. METHODS AND FINDINGS We have inferred the phylogenies of the partial coat protein gene sequences of about 50 potyviruses, and studied in detail the phylogenies of some using various methods and evolutionary models. Their phylogenies have been calibrated using historical isolation and outbreak events: the plum pox virus epidemic which swept through Europe in the 20th century, incursions of potyviruses into Australia after agriculture was established by European colonists, the likely transport of cowpea aphid-borne mosaic virus in cowpea seed from Africa to the Americas with the 16th century slave trade and the similar transport of papaya ringspot virus from India to the Americas. CONCLUSIONS/SIGNIFICANCE Our studies indicate that the partial coat protein genes of potyviruses have an evolutionary rate of about 1.15x10(-4) nucleotide substitutions/site/year, and the initial radiation of the potyviruses occurred only about 6,600 years ago, and hence coincided with the dawn of agriculture. We discuss the ways in which agriculture may have triggered the prehistoric emergence of potyviruses and fostered their speciation.
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Melgarejo TA, Lehtonen MT, Fribourg CE, Rännäli M, Valkonen JPT. Strains of BCMV and BCMNV characterized from lima bean plants affected by deforming mosaic disease in Peru. Arch Virol 2007; 152:1941-9. [PMID: 17564759 DOI: 10.1007/s00705-007-1008-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2007] [Accepted: 05/10/2007] [Indexed: 10/23/2022]
Abstract
Viruses of the species Bean common mosaic virus (BCMV) and Bean common mosaic necrosis virus (BCMNV) were simultaneously detected by the different size of PCR amplicons in lima bean plants (Phaseolus lunatus) displaying deforming mosaic symptoms in Peru. Phylogenetic analysis of partial deduced CP amino acid sequences indicated that the Peruvian BCMV isolates belong to new strains. One isolate differed from the other Peruvian isolates, and also from the ten previously described BCMV strains recognized by responses on differential bean varieties. The sequence of the 3'-proximal part (2547 nucleotides) of the genome confirmed that this isolate also belongs to BCMV.
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Affiliation(s)
- T A Melgarejo
- Departamento de Fitopatologia, Universidad Nacional Agraria La Molina (UNALM), Lima, Peru
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Novaes QS, Rezende JAM. Protection between strains of Passion fruit woodiness virus in sunnhemp. ACTA ACUST UNITED AC 2005. [DOI: 10.1590/s0100-41582005000300017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The main objective of the present study was to evaluate the effect of the sunhemp (Crotalaria juncea) host species on the protective ability of two mild strains of Passion fruit woodiness virus (PWV), named F-101 and F-144, which had failed to protect passion flowers (Passiflora edulis f. flavicarpa) in previous experiments. The nucleotide sequences of the capsid protein (CP) gene and the 3'-non-translated region (3'-NTR) of these mild strains and the severe strain of PWV-SP were compared to confirm their relationship. The results of two protective tests with sunhemp plants in the greenhouse and one test under field conditions showed that all plants infected with either mild strain were protected against infection and/or symptom expression of the severe strain of PWV-SP. Evaluation of the relative concentration of the mild strains in sun hemp leaves showed an apparent uniformity in virus distribution in the leaf tissues, different than that which was previously reported for these mild strains in passion flower leaves. These results agree with previous studies that showed the effect of the concentration of the protective strains and the host species in the protection process.
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Pio-Ribeiro G, Pappu SS, Pappu HR, Andrade GP, Reddy DVR. Occurrence of Cowpea aphid-borne mosaic virus in Peanut in Brazil. PLANT DISEASE 2000; 84:760-766. [PMID: 30832105 DOI: 10.1094/pdis.2000.84.7.760] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surveys of peanut crops in northeastern Brazil since 1995 showed the occurrence of a hitherto unreported virus disease. Characteristic leaf symptoms were ring spots and blotches. The virus was seed transmitted in peanut (1/610) and cowpea (47/796). Local and systemic symptoms were observed in cowpea (cv. TVu 3433) known to be susceptible to most Cowpea aphid-borne mosaic virus (CABMV) isolates. The virus was transmitted by aphids Toxoptera citricidus and Aphis gossypii. Using degenerate primers, the 3' terminal region of the viral genome was cloned and sequenced. Sequence analyses of the coat protein and the 3' untranslated region indicated that the potyvirus was most closely related to CABMV isolates from South Africa, Zimbabwe, and the United States. On the basis of genome analysis, the virus was identified as CABMV. The natural occurrence of CABMV on peanut has so far not been reported. The significance of this finding especially for germ plasm exchange is discussed.
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Affiliation(s)
- G Pio-Ribeiro
- Universidade Federal Rural de Pernambuco, Dois Irmãos, Recife, PE - CEP: 52 171-900, Brazil
| | | | - H R Pappu
- Department of Plant Pathology, University of Georgia, Coastal Plain Experiment Station, Tifton 31793
| | - G P Andrade
- Universidade Federal Rural de Pernambuco, Dois Irmãos, Recife, PE - CEP: 52 171-900, Brazil
| | - D V R Reddy
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Andhra Pradesh 502 324, India
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9
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van Boxtel J, Thomas CL, Maule AJ. Phylogenetic analysis of two potyvirus pathogens of commercial cowpea lines: implications for obtaining pathogen-derived resistance. Virus Genes 2000; 20:71-7. [PMID: 10766309 DOI: 10.1023/a:1008164324663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
As a prelude to developing engineered resistance to two important potyvirus pathogens of cowpea, a phylogenetic analysis of strains of Cowpea aphid-borne mosaic virus (CAbMV) and Bean common mosaic virus--blackeye cowpea strain (BCMV-B1C) was undertaken. Nucleotide sequences for the coat protein genes and 3'-untranslated regions of four CAbMV and one BCMV-B1C strains were determined and included in an analysis with published sequences. While all the newly sequenced viruses showed strong homology with the existing respective sequences in the database, the CAbMV group showed a divergence into two subgroups. These groups differed from each other by more than some CAbMV strains differed from the South African Passiflora virus (CAbMV-SAP), which has distinct biological characteristics. The implications of the sequence analyses are discussed with respect to a strategy for the generation of engineered resistance to both groups of viruses.
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Affiliation(s)
- J van Boxtel
- Department of Virus Research, John Innes Centre, Norwich Research Park, UK
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10
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Affiliation(s)
- E P Rybicki
- Department of Microbiology, University of Cape Town, South Africa
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11
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Sithole-Niang I, Nyathi T, Maxwell DP, Candresse T. Sequence of the 3'-terminal region of a Zimbabwe isolate of cowpea aphid-borne mosaic virus (CABMV). Arch Virol 1996; 141:935-43. [PMID: 8678838 DOI: 10.1007/bf01718167] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The 3'-terminal 1221 nucleotides of a Zimbabwe isolate of cowpea aphid-borne mosaic potyvirus (CABMV) genome have been sequenced. The sequence comprises an open reading frame (ORF) of 990 nucleotides and a 3' non-coding-region of 231 nucleotides followed by a poly-A. The ORF has high similarity to NIb and coat proteins (CP) of potyviruses. A potential CP Q/S cleavage site was identified, yielding a CP of 30.5 kDa containing 275 amino acids. The CABMV sequence is closely related to that of South African passiflora virus (SAPV) which should therefore be regarded as a strain of CABMV.
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Affiliation(s)
- I Sithole-Niang
- Department of Biochemistry, University of Zimbabwe, Harare, Zimbabwe
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12
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Huguenot C, Furneaux MT, Clare JA, Hamilton RI. Improved diagnosis of cowpea aphid-borne mosaic virus in Africa: significance for cowpea seed-indexing, breeding programs and potyvirus taxonomy. Arch Virol 1996; 141:137-45. [PMID: 8629941 DOI: 10.1007/bf01718594] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Large-scale surveys in Africa for blackeye cowpea mosaic (B1CMV) and cowpea aphid-borne mosaic (CABMV) showed that several CABMV isolates from Southern Africa were either not or poorly recognized by monoclonal antibodies prepared to isolates collected in West Africa. Selection of three new monoclonal antibodies prepared against the Maputo (Mozambique) isolate of CABMV, and their incorporation into a revised panel of monoclonal antibodies, resulted in the assignment of four of these new CABMV isolates to existing serotypes (II, IV, and V) and three others to a new serotype (VI). The South African isolate of passiflora mosaic virus was shown to be related to CABMV isolates in serotype IV. It is proposed that CABMV isolates be assembled into a distinct species in the legume-infecting, aphid-transmissible potyviruses.
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Affiliation(s)
- C Huguenot
- Pacific Agriculture Research Centre, Agriculture and Agri-Food Canada
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13
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McKern NM, Strike PM, Barnett OW, Dijkstra J, Shukla DD, Ward CW. Cowpea aphid borne mosaic virus-Morocco and South African Passiflora virus are strains of the same potyvirus. Arch Virol 1994; 136:207-17. [PMID: 8002788 DOI: 10.1007/bf01538830] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
High performance liquid chromatography (HPLC) profiles of tryptic peptides and partial amino acid sequence analysis have been employed to establish the taxonomic status of the Moroccan isolate of cowpea aphid-borne mosaic virus (CABMV). Some previous reports have suggested CABMV to be very closely related to blackeye cowpea mosaic virus (B1CMV) while other reports have concluded that this relationship is distant. In this report a tryptic digest of the coat protein of CABMV-Morocco was compared with those of the coat proteins of B1CMV-Type, B1CMV-W, the mild mottle strain of peanut stripe virus (PStV-MM) and the NY15 strain of bean common mosaic virus (BCMV-NY15), all of which are now recognised as strains of BCMV. The comparisons also included the NL-3 strain of bean necrosis mosaic virus (BNMV-NL3), which had previously been classified as a strain of BCMV. The HPLC peptide profiles indicated that CABMV-Morocco was distinct from BCMV and BNMV. Amino acid sequence analysis of peptides accounting for more than half of the coat protein confirmed that CABMV-Morocco was not a strain of BNMV or BCMV but was a distinct member of the BCMV subset of viruses that previously has been shown to include BCMV, BNMV, soybean mosaic virus, zucchini yellow mosaic virus, passionfruit woodiness virus and South African Passiflora virus (SAPV). Comparison of the partial sequence data with these and other published sequences revealed that the coat protein of CABMV-Morocco is very similar to that of SAPV suggesting that they are strains of the same virus. Since CABMV was described over 25 years earlier than SAPV, the name CABMV should take precedence and SAPV should be renamed CABMV-SAP, the South African Passiflora strain of CABMV.
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Affiliation(s)
- N M McKern
- CSIRO Division of Biomolecular Engineering, Parkville, Australia
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14
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Teycheney PY, Dietzgen RG. Cloning and sequence analysis of the coat protein genes of an Australian strain of peanut mottle and an Indonesian 'blotch' strain of peanut stripe potyviruses. Virus Res 1994; 31:235-44. [PMID: 7999143 DOI: 10.1016/0168-1702(94)90006-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We have analysed the coat protein gene sequences of two potyviruses infecting peanut. The 3' terminal 1247 nucleotides (nt) of an Australian strain of peanut mottle virus (PeMoV-AU) and the 3' terminal 1388 nt of an Indonesian 'blotch' strain of peanut stripe virus (PStV-Ib) were cloned and sequenced. Those regions included the 861 and 864 nt encoding the respective putative coat proteins as well as the 285 and 253 nt, respectively of 3' non-coding sequences. Comparison of the nucleotide sequences of PeMoV-AU and PStV-Ib revealed a sequence similarity of 64.4% for the coat protein gene and 34.6% for the 3' non-coding region. The deduced amino acid sequences of PeMoV-AU and PStV-Ib coat proteins are 66.7% identical. These results provide further evidence that PeMoV and PStV are distinct viruses. Comparisons of the 3' terminal sequences of PeMoV-AU and PStV-Ib with those of the genomic RNA of other strains of PeMoV and PStV and with other potyviruses are discussed.
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Affiliation(s)
- P Y Teycheney
- Department of Primary Industries, Queensland Agricultural Biotechnology Centre, Gehrmann Laboratories, University of Queensland, St. Lucia, Australia
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15
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Sáiz M, Dopazo J, Castro S, Romero J. Evolutionary relationships among bean common mosaic virus strains and closely related potyviruses. Virus Res 1994; 31:39-48. [PMID: 8165868 DOI: 10.1016/0168-1702(94)90069-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Bean common mosaic virus (BCMV) consists of a large number of strains with complex and controversial relationships among them and with other potyviruses that infect legumes. In order to elucidate the BCMV taxonomic pattern and its evolutionary implications, a phylogenetic analysis has been carried out. The analysis of the coat protein gene and 3' non-coding region (NCR) sequences recently obtained by us and other currently available potyviral sequences confirms the clustering of viruses comprised in BCMV strains with other closely related potyviruses and reveals the great informative content of 3' NCR, suggesting a more relevant role for this region in phylogenetic analysis.
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Affiliation(s)
- M Sáiz
- Dpto. Protección Vegetal, CIT-INIA, Madrid, Spain
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16
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Habera LF, Berger PH, Reddick BB. Molecular evidence from 3'-terminus sequence analysis that tobacco vein-banding mosaic virus is a distinct member of the potyvirus group. Arch Virol 1994; 138:27-38. [PMID: 7980009 DOI: 10.1007/bf01310036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/1994] [Accepted: 05/17/1994] [Indexed: 01/28/2023]
Abstract
The 3'-terminal 1902 nucleotides of the tobacco vein-banding mosaic virus (TVBMV) were cloned and sequenced. The sequence contains a large open reading frame of 572 amino acid residues followed by a non-coding region of 183 nucleotides which terminates in a polyadenylate tract. The TVBMV coat protein is processed from a larger polyprotein by cleavage at a Gln/Gly dipeptide, which is followed closely by the aphid transmission DAG triplet. Translation of the nucleotide sequence yielded a protein of 271 amino acid residues with a calculated M(r) of 30,347. The amino acid and nucleotide sequences of the TVBMV coat protein and 3' non-coding region were compared to 33-35 other virus sequences. Percent sequence identity of the amino acid and nucleotide sequences were in the range expected from comparison of distinct viruses. Phylogenetic analyses were also performed to determine the relationship of TVBMV to other well-characterized viruses. These studies indicate that TVBMV should be regarded as a distinct member of the potyvirus group.
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Affiliation(s)
- L F Habera
- Department of Entomology and Plant Pathology, U.T.I.A., University of Tennessee, Knoxville
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Chang BY, Huang CR, Yeh SD, Chiang JK, Hung LM, Hu HY. Nucleotide sequence of the coat protein coding region of the potyvirus tobacco vein-banding mosaic virus. Arch Virol 1994; 138:17-25. [PMID: 7980007 DOI: 10.1007/bf01310035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The sequence of the 3' 1184 nucleotides of tobacco vein-banding mosaic virus (TVBMV) genome has been determined. It contains a single open reading frame which encompasses the whole of the coat protein of TVBMV. The sequence of the first 20 amino acids at the N-terminal region of the coat protein has also been determined chemically to be GDDQTVDAGKNVQSNQKQRN. The sequence matches the translation product of the open reading frame starting with amino acid-271; a glycine residue. Thus the coat protein of TVBMV has a calculated M(r) of 30,210. The 3' non-coding region of TVBMV is 185 nucleotides in length. Sequence alignment of the coat proteins or the 3' non-coding regions from TVBMV and other reported potyviruses indicated that TVBMV is a separate species of the potyvirus genus.
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Affiliation(s)
- B Y Chang
- Agricultural Biotechnology Laboratories, National Chung-Hsing University, Taiwan
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