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Dye AE, Muga B, Mwangi J, Hoyer JS, Ly V, Rosado Y, Sharpee W, Mware B, Wambugu M, Labadie P, Deppong D, Jackai L, Jacobson A, Kennedy G, Ateka E, Duffy S, Hanley-Bowdoin L, Carbone I, Ascencio-Ibáñez JT. Cassava begomovirus species diversity changes during plant vegetative cycles. Front Microbiol 2023; 14:1163566. [PMID: 37303798 PMCID: PMC10248227 DOI: 10.3389/fmicb.2023.1163566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/17/2023] [Indexed: 06/13/2023] Open
Abstract
Cassava is a root crop important for global food security and the third biggest source of calories on the African continent. Cassava production is threatened by Cassava mosaic disease (CMD), which is caused by a complex of single-stranded DNA viruses (family: Geminiviridae, genus: Begomovirus) that are transmitted by the sweet potato whitefly (Bemisia tabaci). Understanding the dynamics of different cassava mosaic begomovirus (CMB) species through time is important for contextualizing disease trends. Cassava plants with CMD symptoms were sampled in Lake Victoria and coastal regions of Kenya before transfer to a greenhouse setting and regular propagation. The field-collected and greenhouse samples were sequenced using Illumina short-read sequencing and analyzed on the Galaxy platform. In the field-collected samples, African cassava mosaic virus (ACMV), East African cassava mosaic virus (EACMV), East African cassava mosaic Kenya virus (EACMKV), and East African cassava mosaic virus-Uganda variant (EACMV-Ug) were detected in samples from the Lake Victoria region, while EACMV and East African mosaic Zanzibar virus (EACMZV) were found in the coastal region. Many of the field-collected samples had mixed infections of EACMV and another begomovirus. After 3 years of regrowth in the greenhouse, only EACMV-like viruses were detected in all samples. The results suggest that in these samples, EACMV becomes the dominant virus through vegetative propagation in a greenhouse. This differed from whitefly transmission results. Cassava plants were inoculated with ACMV and another EACMV-like virus, East African cassava mosaic Cameroon virus (EACMCV). Only ACMV was transmitted by whiteflies from these plants to recipient plants, as indicated by sequencing reads and copy number data. These results suggest that whitefly transmission and vegetative transmission lead to different outcomes for ACMV and EACMV-like viruses.
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Affiliation(s)
- Anna E. Dye
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States
| | - Brenda Muga
- Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Jenniffer Mwangi
- Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - J. Steen Hoyer
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, United States
| | - Vanessa Ly
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, United States
| | - Yamilex Rosado
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, United States
| | - William Sharpee
- International Livestock Research Institute (ILRI), Nairobi, Kenya
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, United States
| | - Benard Mware
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Mary Wambugu
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Paul Labadie
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, United States
| | - David Deppong
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States
| | - Louis Jackai
- Department of Natural Resources and Environmental Design, North Carolina Agricultural and Technical State University, Greensboro, NC, United States
| | - Alana Jacobson
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, United States
| | - George Kennedy
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, United States
| | - Elijah Ateka
- Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Siobain Duffy
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, United States
| | - Linda Hanley-Bowdoin
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States
| | - Ignazio Carbone
- Center for Integrated Fungal Research, Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, United States
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Avalos-Calleros JA, Pastor-Palacios G, Bolaños-Martínez OC, Mauricio-Castillo A, Gregorio-Jorge J, Martínez-Marrero N, Bañuelos-Hernández B, Méndez-Lozano J, Arguello-Astorga GR. Two strains of a novel begomovirus encoding Rep proteins with identical β1 strands but different β5 strands are not compatible in replication. Arch Virol 2021; 166:1691-1709. [PMID: 33852083 DOI: 10.1007/s00705-021-05066-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 02/20/2021] [Indexed: 10/21/2022]
Abstract
Geminiviruses have genomes composed of single-stranded DNA molecules and encode a rolling-circle replication (RCR) initiation protein ("Rep"), which has multiple functions. Rep binds to specific repeated DNA motifs ("iterons"), which are major determinants of virus-specific replication. The particular amino acid (aa) residues that determine the preference of a geminivirus Rep for specific iterons (i.e., the trans-acting replication "specificity determinants", or SPDs) are largely unknown, but diverse lines of evidence indicate that most of them are closely associated with the so-called RCR motif I (FLTYP), located in the first 12-19 aa residues of the protein. In this work, we characterized two strains of a novel begomovirus, rhynchosia golden mosaic Sinaloa virus (RhGMSV), that were incompatible in replication in pseudorecombination experiments. Systematic comparisons of the Rep proteins of both RhGMSV strains in the DNA-binding domain allowed the aa residues at positions 71 and 74 to be identified as the residues most likely to be responsible for differences in replication specificity. Residue 71 is part of the β-5 strand structural element, which was predicted in previous studies to contain Rep SPDs. Since the Rep proteins encoded by both RhGMSV strains are identical in their first 24 aa residues, where other studies have mapped potential SPDs, this is the first study lending direct support to the notion that geminivirus Rep proteins contain separate SPDs in their N-terminal domain.
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Affiliation(s)
- Jesús Aarón Avalos-Calleros
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C. Camino a la Presa de San José 2055, Lomas 4a Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico
| | - Guillermo Pastor-Palacios
- CONACYT-Consorcio de Investigación Innovación y Desarrollo para las Zonas Áridas, Instituto Potosino de Investigación Científica y Tecnológica, A.C. Camino a La Presa de San José 2055, Lomas 4a Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico
| | - Omayra C Bolaños-Martínez
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C. Camino a la Presa de San José 2055, Lomas 4a Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico
| | | | - Josefat Gregorio-Jorge
- Consejo Nacional de Ciencia y Tecnología, Universidad Politécnica de Tlaxcala (UPTx)., Av. Insurgentes Sur 1582, Col. Crédito Constructor, Del. Benito Juárez, 03940, Mexico City, Mexico
| | - Nadia Martínez-Marrero
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C. Camino a la Presa de San José 2055, Lomas 4a Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico
| | - Bernardo Bañuelos-Hernández
- Facultad de Agronomia y Veterinaria, Universidad De La Salle Bajio, Avenida Universidad 602, Lomas del Campestre, 37150, León Guanajuato, Mexico
| | - Jesús Méndez-Lozano
- Departamento de Biotecnología Agrícola, Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, 81101, Guasave, Sinaloa, Mexico
| | - Gerardo Rafael Arguello-Astorga
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C. Camino a la Presa de San José 2055, Lomas 4a Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico.
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Rodríguez-Negrete EA, Morales-Aguilar JJ, Domínguez-Duran G, Torres-Devora G, Camacho-Beltrán E, Leyva-López NE, Voloudakis AE, Bejarano ER, Méndez-Lozano J. High-Throughput Sequencing Reveals Differential Begomovirus Species Diversity in Non-Cultivated Plants in Northern-Pacific Mexico. Viruses 2019; 11:v11070594. [PMID: 31261973 PMCID: PMC6669537 DOI: 10.3390/v11070594] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/28/2019] [Accepted: 06/17/2019] [Indexed: 12/24/2022] Open
Abstract
Plant DNA viruses of the genus Begomovirus have been documented as the most genetically diverse in the family Geminiviridae and present a serious threat for global horticultural production, especially considering climate change. It is important to characterize naturally existing begomoviruses, since viral genetic diversity in non-cultivated plants could lead to future disease epidemics in crops. In this study, high-throughput sequencing (HTS) was employed to determine viral diversity of samples collected in a survey performed during 2012–2016 in seven states of Northern-Pacific Mexico, areas of diverse climatic conditions where different vegetable crops are subject to intensive farming. In total, 132 plant species, belonging to 34 families, were identified and sampled in the natural ecosystems surrounding cultivated areas (agro-ecological interface). HTS analysis and subsequent de novo assembly revealed a number of geminivirus-related DNA signatures with 80 to 100% DNA similarity with begomoviral sequences present in the genome databank. The analysis revealed DNA signatures corresponding to 52 crop-infecting and 35 non-cultivated-infecting geminiviruses that, interestingly, were present in different plant species. Such an analysis deepens our knowledge of geminiviral diversity and could help detecting emerging viruses affecting crops in different agro-climatic regions.
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Affiliation(s)
- Edgar Antonio Rodríguez-Negrete
- Consejo Nacional de Ciencia y Tecnología (CONACYT), Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico
| | - Juan José Morales-Aguilar
- Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico
| | - Gustavo Domínguez-Duran
- Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico
| | - Gadiela Torres-Devora
- Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico
| | - Erika Camacho-Beltrán
- Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico
| | - Norma Elena Leyva-López
- Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico
| | - Andreas E Voloudakis
- Laboratory of Plant Breeding and Biometry, Agricultural University of Athens, 75 Iera Odos, Athens 11855, Greece
| | - Eduardo R Bejarano
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Universidad de Málaga, Campus Teatinos, 29071 Málaga, Spain
| | - Jesús Méndez-Lozano
- Instituto Politécnico Nacional, CIIDIR-Unidad Sinaloa, Departamento de Biotecnología Agrícola, Guasave, Sinaloa 81101, Mexico.
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Moreno-Félix M, Rodríguez-Negrete E, Meléndrez-Bojórquez N, Camacho-Beltrán E, Leyva-López N, Méndez-Lozano J. A new isolate ofPepper huasteco yellow vein virus(PHYVV) breaks geminivirus tolerance in tomato (Solanum lycopersicum) commercial lines. ACTA ACUST UNITED AC 2018. [DOI: 10.17660/actahortic.2018.1207.4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Simmonds-Gordon RN, Collins-Fairclough AM, Stewart CS, Roye ME. First report of a complete genome sequence for a begomovirus infecting Jatropha gossypifolia in the Americas. Arch Virol 2014; 159:2815-8. [PMID: 24872185 DOI: 10.1007/s00705-014-2112-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 04/30/2014] [Indexed: 11/28/2022]
Abstract
Jatropha gossypifolia is a weed that is commonly found with yellow mosaic symptoms growing along the roadside and in close proximity to cultivated crops in many farming communities in Jamaica. For the first time, the complete genome sequence of a new begomovirus, designated jatropha mosaic virus-[Jamaica:Spanish Town:2004] (JMV-[JM:ST:04]), was determined from field-infected J. gossypifolia in the western hemisphere. DNA-A nucleotide sequence comparisons showed closest identity (84 %) to two tobacco-infecting viruses from Cuba, tobacco mottle leaf curl virus-[Cuba:Sancti Spiritus:03] (TbMoLCV-[CU:SS:03]) and tobacco leaf curl Cuba virus-[Cuba:Taguasco:2005] (TbLCuCUV-[CU:Tag:05]), and two weed-infecting viruses from Cuba and Jamaica, Rhynchosia rugose golden mosaic virus-[Cuba:Camaguey:171:2009] (RhRGMV- [CU:Cam:171:09]) and Wissadula golden mosaic St. Thomas virus-[Jamaica:Albion:2005] (WGMSTV-[JM:Alb:05]). Phylogenetic analysis revealed that JMV-[JM:ST:04] is most closely related to tobacco and tomato viruses from Cuba and WGMSTV-[JM:Alb:05], a common malvaceous-weed-infecting virus from eastern Jamaica, and that it is distinct from begomoviruses infecting Jatropha species in India and Nigeria.
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Affiliation(s)
- R N Simmonds-Gordon
- Biotechnology Center, University of the West Indies, 2 St John's Close, Mona Campus, Kingston, Jamaica
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Rentería-Canett I, Xoconostle-Cázares B, Ruiz-Medrano R, Rivera-Bustamante RF. Geminivirus mixed infection on pepper plants: synergistic interaction between PHYVV and PepGMV. Virol J 2011; 8:104. [PMID: 21385390 PMCID: PMC3061938 DOI: 10.1186/1743-422x-8-104] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 03/08/2011] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND PHYVV and PepGMV are plant viruses reported in Mexico and Southern US as causal agents of an important pepper disease known as "rizado amarillo". Mixed infections with PHYVV and PepGMV have been reported in several hosts over a wide geographic area. Previous work suggested that these viruses might interact at the replication and/or movement level in a complex manner. The aim of present report was to study some aspects of a synergistic interaction between PHYVV and PepGMV in pepper plants. These include analyses of symptom severity, viral DNA concentration and tissue localization of both viruses in single and mixed infections. RESULTS Mixed infections with PepGMV and PHYVV induced symptoms more severe than those observed in single viral infections. Whereas plants infected with either virus (single infection) presented a remission stage with a corresponding decrease in viral DNA levels, double-infected plants did not present symptom remission and both viral DNA concentrations dramatically increased. In situ hybridization experiments revealed that both viruses are restricted to the vascular tissue. Interestingly, the amount of viral DNA detected was higher in plants inoculated with PepGMV than that observed in PHYVV-infected plants. During mixed infections, the location of both viruses remained similar to the one observed in single infections, although the number of infected cells increases. Infections with the tripartite mixture PHYVV (A+B) + PepGMV A produced a similar synergistic infection to the one observed after inoculation with both full viruses. On the contrary, tripartite mixture PepGMV (A+B) + PHYVV A did not produce a synergistic interaction. In an attempt to study the contribution of individual genes to the synergism, several mutants of PHYVV or PepGMV were inoculated in combination with the corresponding wild type, second virus (wt PepGMV or wt PHYVV). All combinations tested resulted in synergistic infections, with exception of the TrAP mutant of PepGMV (PepGMV TrAP-) + PHYVV. CONCLUSION In this report, we have demonstrated that synergistic interaction between PHYVV and PepGMV during a mixed infection is mainly due to an increased DNA concentration of both viruses, without any noticeable effect on the localization of either virus on infected plant tissue. Our results have shown that the viral component A from PepGMV is important for synergism during PHYVV-PepGMV mixed infections.
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Affiliation(s)
- Ilenia Rentería-Canett
- Departamento de Ingeniería Genética. Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Unidad Irapuato, Km. 9.6 Libramiento Norte, 36821 Irapuato, Guanajuato
| | - Beatriz Xoconostle-Cázares
- Departamento de Biotecnología y Bioingeniería, Cinvestav-IPN, Av. IPN 2508, San Pedro Zacatenco, 07360 México, DF
| | - Roberto Ruiz-Medrano
- Departamento de Biotecnología y Bioingeniería, Cinvestav-IPN, Av. IPN 2508, San Pedro Zacatenco, 07360 México, DF
| | - Rafael F Rivera-Bustamante
- Departamento de Ingeniería Genética. Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Unidad Irapuato, Km. 9.6 Libramiento Norte, 36821 Irapuato, Guanajuato
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Molecular characterization of a new begomovirus infecting a leguminous weed Rhynchosia minima in India. Virus Genes 2011; 42:407-14. [PMID: 21318241 DOI: 10.1007/s11262-011-0580-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 01/28/2011] [Indexed: 10/18/2022]
Abstract
A begomovirus associated with yellow mosaic disease in Rhynchosia minima, a common weed was cloned and sequenced. The virus has a bipartite genome, of which DNA-A is 2727 nucleotide length, and DNA-B 2679 nucleotides, and has a typical Old World bipartite begomovirus genome organization. Sequence comparison to all other begomovirus sequences available in the database shows the virus isolated from R. minima to be distinct. Maximum identity of 84% was seen with an isolate of Velvet bean severe mosaic virus-(India: Lucknow:2009) VBSMV-(IN:Luc:09) (GeneBank Accession No. FN543425), while less than 73% identity was observed with any other legumovirus. The molecular data show that the virus identified here is a new species in the genus Begomovirus for which the name Rhynchosia yellow mosaic India virus is proposed.
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Hernández-Zepeda C, Brown JK, Moreno-Valenzuela OA, Argüello-Astorga G, Idris AM, Carnevali G, Rivera-Bustamante RF. Characterization of Rhynchosia yellow mosaic Yucatan virus, a new recombinant begomovirus associated with two fabaceous weeds in Yucatan, Mexico. Arch Virol 2010; 155:1571-9. [PMID: 20574644 DOI: 10.1007/s00705-010-0730-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Accepted: 06/12/2010] [Indexed: 12/01/2022]
Abstract
Rhynchosia minima (L.) DC. (Fabaceae) plants exhibiting bright golden mosaic symptoms were previously associated with begomovirus infection in Yucatan, México [1]. To characterize the begomovirus infecting these plants, the complete bipartite genome was cloned and sequenced. Sequence comparisons indicated that the virus was distinct from all other begomoviruses known to date, including those previously identified from symptomatic R. minima, and the name Rhynchosia yellow mosaic Yucatan virus (RhYMYuV) is proposed. Pairwise comparisons indicated that RhYMYuV DNA-A [2,597 nt, (EU021216)] and DNA-B [2,542 nt, (FJ792608)] components shared the highest nt sequence identity with Cabbage leaf curl virus (CaLCuV), 87% for component A and 71% for component B. Phylogenetic analysis indicated that both components of RhYMYuV are most closely related to other New World begomoviruses, having as closest relatives immediate outliers to the major Squash leaf curl virus (SLCV) clade. Recombination analysis of the RhYMYuV genome indicated that the DNA-A component has arisen through intermolecular recombination. R. minima plants inoculated with the monomeric clones developed a bright yellow mosaic similar to symptoms observed in naturally infected plants, confirming that the clones were infectious. Nicotiana benthamiana plants biolistically inoculated with monomeric clones developed curling and chlorosis in the newly emerging leaves. RhYMYuV was also detected in symptomatic Desmodium sect. Scorpiurus Benth. (Fabaceae) that were collected near the RhYMYuV-infected plants.
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Affiliation(s)
- C Hernández-Zepeda
- Departamento de Ingeniería Genética, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav)-Unidad Irapuato, Irapuato, GTO, Mexico.
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Packialakshmi RM, Srivastava N, Girish KR, Usha R. Molecular characterization of a distinct begomovirus species from Vernonia cinerea and its associated DNA-beta using the bacteriophage Phi 29 DNA polymerase. Virus Genes 2010; 41:135-43. [PMID: 20401528 DOI: 10.1007/s11262-010-0484-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Accepted: 04/05/2010] [Indexed: 11/26/2022]
Abstract
Vernonia cinerea plants with yellow vein symptoms were collected around crop fields in Madurai. A portion (550 bp) of the AV1 gene amplified using degenerate primers from the total DNA purified from diseased leaf sample was cloned and sequenced. Specific primers derived from the above sequence were used to amplify 2,745 nucleotides with the typical genome organization of begomoviral DNA A (EMBL Accession No. AM182232). Sequence comparison with other begomoviruses revealed the greatest identity (82.4%) with Emilia yellow vein virus (EmYVV-[Fz1]) from China and less than 80% with all other known begomoviruses. The International Committee on Taxonomy of Viruses (ICTV) has therefore recognized Vernonia yellow vein virus (VeYVV) as a distinct begomovirus species. Conventional PCR could not amplify the DNA B or DNA beta from the diseased tissue. However, the beta DNA (1364 bp) associated with the disease was obtained (Accession No. FN435836) by the rolling circle amplification-restriction fragment length polymorphism method (RCA-RFLP) using Phi 29 DNA polymerase. Sequence analysis shows that DNA beta of VeYVV has the highest identity (56.8%) with DNA beta of Sigesbeckia yellow vein Guangxi betasatellite (SibYVGxB-[CN: Gx111:05]) and 56-53% with DNA beta associated with other begomoviruses. This is the first report of the molecular characterization of VeYVV from V. cinerea in India. The complete molecular characterization, phylogenetic analysis, and putative recombination events in VeYVV are reported.
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Affiliation(s)
- R M Packialakshmi
- Department of Plant Biotechnology, School of Biotechnology, Madurai Kamaraj University, Madurai, 625 021, India
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Graham AP, Martin DP, Roye ME. Molecular characterization and phylogeny of two begomoviruses infecting Malvastrum americanum in Jamaica: evidence of the contribution of inter-species recombination to the evolution of malvaceous weed-associated begomoviruses from the Northern Caribbean. Virus Genes 2009; 40:256-66. [PMID: 20024609 DOI: 10.1007/s11262-009-0430-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Accepted: 11/28/2009] [Indexed: 11/29/2022]
Abstract
Two distinct full-length begomovirus DNA-A components and a DNA-B component were PCR amplified, cloned and sequenced from Jamaican Malvastrum americanum plants exhibiting yellow mosaic symptoms. Whereas one of the DNA-A components is from a potentially new species that we have tentatively named Malvastrum yellow mosaic Helshire virus (MaYMHV), the other DNA-A and the DNA-B form a cognate pair and represent a new virus species tentatively named Malvastrum yellow mosaic Jamaica virus (MaYMJV). The MaYMJV genome components together infected M. americanum and produced yellow mosaic symptoms similar to those seen in naturally infected plants. Both the MaYMJV and MaYMHV DNA-A components are typical of those of bipartite begomoviruses from the Western Hemisphere. The DNA-As of MaYMJV and MaYMHV are most closely related to each other (sharing 84% sequence identity) and cluster phylogenetically with begomoviruses found infecting malvaceous weeds in Cuba and Florida. The DNA-B component of MaYMJV is most similar to that of Sida golden mosaic virus-[USA:Florida] (SiGMV-[US:Flo]) and Sida golden mosaic Costa Rica virus-[Costa Rica] (SiGMCRV-[CR]). As with many other geminivirus species, the genomes of MaYMJV and MaYMHV bear traces of inter-species recombination.
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Méndez-Lozano J, Torres-Pacheco I, Fauquet CM, Rivera-Bustamante RF. Interactions Between Geminiviruses in a Naturally Occurring Mixture: Pepper huasteco virus and Pepper golden mosaic virus. PHYTOPATHOLOGY 2003; 93:270-277. [PMID: 18944336 DOI: 10.1094/phyto.2003.93.3.270] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
ABSTRACT Pepper huasteco virus (PHV) and Pepper golden mosaic virus (PepGMV) are found in mixtures in many horticultural crops in Mexico. This combination constitutes an interesting, naturally occurring model system to study several aspects of virus-virus interactions. Possible interactions between PHV and PepGMV were studied at four levels: symptom expression, gene expression, replication, and movement. In terms of symptom expression, the interaction was shown to be host-dependent because antagonism was observed in pepper, whereas synergism was detected in tobacco and Nicotiana benthamiana. PHV and PepGMV did not generate viable pseudorecombinant viruses; however, their replication is increased during mixed infections. An asymmetric complementation in movement was observed because PHV was able to support the systemic movement of PepGMV A whereas PepGMV did not support the systemic distribution of PHV A. Heterologous transactivation of both coat protein promoters also was detected. Several conclusions can be drawn from these experiments. First, viruses coinfecting the same plant can interact at several levels (replication, movement) and in different manners (synergism, antagonism); some interactions might be host dependent; and natural mixed infections could be a potential source of geminivirus variability by generating viable tripartite combinations that could facilitate recombination events.
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