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Wang S, Chen B, Ni S, Liang Y, Li Z. Efficient generation of recombinant eggplant mottled dwarf virus and expression of foreign proteins in solanaceous hosts. Virology 2024; 591:109980. [PMID: 38215560 DOI: 10.1016/j.virol.2024.109980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/11/2023] [Accepted: 01/02/2024] [Indexed: 01/14/2024]
Abstract
Reverse genetics systems have only been successfully developed for a few plant rhabdoviruses. Additional systems are needed for molecular virology studies of these diverse viruses and development of viral vectors for biotechnological applications. Eggplant mottled dwarf virus (EMDV) is responsible for significant agricultural losses in various crops throughout the Mediterranean region and the Middle East. In this study, we report efficient recovery of infectious EMDV from cloned DNAs and engineering of EMDV-based vectors for the expression of foreign proteins in tobacco, eggplant, pepper, and potato plants. Furthermore, we show that the EMDV-based vectors are capable of simultaneously expressing multiple foreign proteins. The developed EMDV reverse genetics system offers a versatile tool for studying virus pathology and plant-virus interactions and for expressing foreign proteins in a range of solanaceous crops.
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Affiliation(s)
- Shuo Wang
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Binhuan Chen
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Shuang Ni
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yan Liang
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Zhenghe Li
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China; Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Zhejiang University, Hangzhou, China; Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou, China.
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Alfaro-Fernández A, Taengua R, Font-San-Ambrosio I, Sanahuja-Edo E, Peiró R, Galipienso L, Rubio L. Genetic Variation and Evolutionary Analysis of Eggplant Mottled Dwarf Virus Isolates from Spain. PLANTS (BASEL, SWITZERLAND) 2024; 13:250. [PMID: 38256804 PMCID: PMC10818716 DOI: 10.3390/plants13020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
The genetic variation and population structure of gene N (nucleocapsid) and part of gene L (replicase) from 13 eggplant mottle dwarf virus (EMDV) isolates from Spain were evaluated and compared with sequences of EMDV isolates from other countries retrieved from GenBank. Phylogenetic inference of part of gene L showed three main clades, one containing an EMDV isolate from Australia and the other two containing isolates from Iran and Europe, as well as four subclades. EMDV isolates from Spain were genetically very similar and grouped in a subclade together with one isolate from Germany and one from the UK. No new recombination events were detected in addition to one recombination previously reported, suggesting that recombination is rare for EMDV. The comparison of synonymous and non-synonymous rates showed that negative selection played an important role, and only two codons were under positive selection. Genetic differentiation (Fst test), phylogenetic and nucleotide diversity analyses suggest a unique introduction of EMDV to Spain and low gene flow with other countries. In contrast, Greece and Italy showed diverse populations with high gene flow between both.
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Affiliation(s)
- Ana Alfaro-Fernández
- Instituto Agroforestal Mediterráneo (IAM), Universitat Politècnica de València (UPV), 46022 Valencia, Valencia, Spain; (A.A.-F.); (I.F.-S.-A.); (E.S.-E.)
| | - Rafael Taengua
- Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Moncada, Valencia, Spain; (R.T.); (L.G.)
| | - Isabel Font-San-Ambrosio
- Instituto Agroforestal Mediterráneo (IAM), Universitat Politècnica de València (UPV), 46022 Valencia, Valencia, Spain; (A.A.-F.); (I.F.-S.-A.); (E.S.-E.)
| | - Esmeralda Sanahuja-Edo
- Instituto Agroforestal Mediterráneo (IAM), Universitat Politècnica de València (UPV), 46022 Valencia, Valencia, Spain; (A.A.-F.); (I.F.-S.-A.); (E.S.-E.)
| | - Rosa Peiró
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València (UPV), 46022 Valencia, Valencia, Spain;
| | - Luis Galipienso
- Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Moncada, Valencia, Spain; (R.T.); (L.G.)
| | - Luis Rubio
- Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Moncada, Valencia, Spain; (R.T.); (L.G.)
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Pappi PG, Fotiou I, Efthimiou KE, Katis NI, Maliogka VI. Development of three duplex real-time RT-PCR assays for the sensitive and rapid detection of a phytoplasma and five viral pathogens affecting stone fruit trees. Mol Cell Probes 2020; 53:101621. [PMID: 32603761 DOI: 10.1016/j.mcp.2020.101621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/27/2020] [Accepted: 06/15/2020] [Indexed: 10/24/2022]
Abstract
Three duplex real-time reverse-transcription polymerase chain reaction (real-time RT-PCR) assays based on TaqMan chemistry, were developed for the simultaneous detection and specific quantification of apple chlorotic leafspot virus (ACLSV), plum pox virus (PPV), prunus necrotic ringspot virus (PNRSV), prune dwarf virus (PDV), peach latent mosaic viroid (PLMVd) and the European stone fruit yellows (ESFY) phytoplasma, which are considered among the most important pathogens affecting stone fruit trees. The quantitative RT-PCR (RT-qPCR) assays were optimized using RNA transcripts (linearized plasmid was used for the assay optimization of the ESFY phytoplasma) of known concentrations. No differences in sensitivity were recorded between the duplex and singleplex RT-qPCR assays. The amplification efficiency of the duplex assays reached 91.1-95.8%, while the linear range of quantification was from 20 to 2 × 107 RNA/linearized plasmid transcripts for PLMVd and ESFY phytoplasma, 40 to 4 × 107 RNA transcripts for ACLSV, PPV and PDV, and 102 to 108 RNA transcripts for PNRSV, respectively. The duplex RT-qPCR assays, which were validated using both characterized isolates from all pathogens and field samples from Prunus species in Northern Greece, exhibited a broad detection range. Overall, the developed methods comprise useful tools that could be applied for the simultaneous and reliable detection of graft-transmissible pathogens in certification programs of Prunus spp.
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Affiliation(s)
- Polyxeni G Pappi
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, University Campus, Thessaloniki, Greece
| | - Ioanna Fotiou
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, University Campus, Thessaloniki, Greece
| | - Konstantinos E Efthimiou
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, University Campus, Thessaloniki, Greece
| | - Nikolaos I Katis
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, University Campus, Thessaloniki, Greece
| | - Varvara I Maliogka
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124, University Campus, Thessaloniki, Greece.
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Papavasileiou A, Tanou G, Samaras A, Samiotaki M, Molassiotis A, Karaoglanidis G. Proteomic analysis upon peach fruit infection with Monilinia fructicola and M. laxa identify responses contributing to brown rot resistance. Sci Rep 2020; 10:7807. [PMID: 32385387 PMCID: PMC7210933 DOI: 10.1038/s41598-020-64864-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/17/2020] [Indexed: 12/28/2022] Open
Abstract
Brown rot, caused by Monilinia spp., is a major peach disease worldwide. In this study, the response of peach cultivars Royal Glory (RG) and Rich Lady (RL) to infection by Monilinia fructicola or Monilinia laxa, was characterized. Phenotypic data, after artificial inoculations, revealed that ‘RL’ was relatively susceptible whereas ‘RG’ was moderately resistant to Monilinia spp. Comparative proteomic analysis identified mesocarp proteins of the 2 cultivars whose accumulation were altered by the 2 Monilinia species. Functional analysis indicated that pathogen-affected proteins in ‘RG’ were mainly involved in energy and metabolism, while, differentially accumulated proteins by the pathogen presence in ‘RL’ were involved in disease/defense and metabolism. A higher number of proteins was differentiated in ‘RG’ fruit compared to ‘RL’. Upon Monilinia spp. infection, various proteins were-down accumulated in ‘RL’ fruit. Protein identification by mass spectrometric analysis revealed that several defense-related proteins including thaumatin, formate dehydrogenase, S-formylglutathione hydrolase, CBS domain-containing protein, HSP70, and glutathione S-transferase were up-accumulated in ‘RG’ fruit following inoculation. The expression profile of selected defense-related genes, such as major latex allergen, 1-aminocyclopropane-1-carboxylate deaminase and UDP-glycoltransferase was assessed by RT-PCR. This is the first study deciphering differential regulations of peach fruit proteome upon Monilinia infection elucidating resistance responses.
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Affiliation(s)
- Antonios Papavasileiou
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University, POB 269, 54124, Thessaloniki, Greece
| | - Georgia Tanou
- Institute of Soil and Water Resources, ELGO-Demeter Thermi, Thessaloniki, Greece
| | - Anastasios Samaras
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University, POB 269, 54124, Thessaloniki, Greece
| | - Martina Samiotaki
- Biomedical Sciences Research Center "Alexander Fleming", Vari, 16672, Greece
| | - Athanassios Molassiotis
- Laboratory of Pomology, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University, 570 01, Thessaloniki-Thermi, Greece.
| | - George Karaoglanidis
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University, POB 269, 54124, Thessaloniki, Greece.
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Kamou NN, Cazorla F, Kandylas G, Lagopodi AL. Induction of defense-related genes in tomato plants after treatments with the biocontrol agents Pseudomonas chlororaphis ToZa7 and Clonostachys rosea IK726. Arch Microbiol 2019; 202:257-267. [DOI: 10.1007/s00203-019-01739-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 09/04/2019] [Accepted: 09/27/2019] [Indexed: 01/08/2023]
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Apostolidi ED, Psalla D, Chassalevris T, Chaintoutis SC, Giadinis ND, Psychas V, Dovas CI. Development of real-time PCR-based methods for the detection of enzootic nasal tumor virus 2 in goats. Arch Virol 2019; 164:707-716. [PMID: 30604242 DOI: 10.1007/s00705-018-04138-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 12/07/2018] [Indexed: 01/07/2023]
Abstract
Enzootic nasal adenocarcinoma (ENA) is a contagious neoplasm of sheep and goats, associated with the oncogenic retroviruses enzootic nasal tumor virus (ENTV) 1 and 2, respectively. It appears to be common in countries with substantial small ruminant-production. ENA diagnosis in goats is based on autopsy and histopathology, and there is no real-time PCR method available for ENTV-2 detection. Here, a novel one-tube real-time RT-PCR (RT-qPCR) method for the detection and quantification of ENTV-2 in nasal swabs is presented. The method targets the env gene/U3 region. For the design of ENTV-2-specific oligonucleotides, molecular characterization of seven Greek ENTV-2 strains was performed. Phylogenetic analysis revealed three distinct phylogenetic clades of ENTV-2 that correlate with the country of sample collection. Evaluation of the analytical performance of the RT-qPCR revealed an amplification efficiency of 92.8% and a linear range of quantification between 2 × 108 and 2 × 102 RNA transcripts. Analysis of nasal swabs from 23 histopathologically confirmed, naturally occurring ENA cases via RT-qPCR yielded positive results. Moreover, modification of the method for use in a real-time PCR (qPCR) assay enables detection of proviral DNA in tumor specimens. Both methods are highly specific and can be used for the confirmation of ENA-suspected cases. Future applications could include ante-mortem diagnosis, verification of the ENTV-2-free status in animal trade, disease surveillance, and control programs.
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Affiliation(s)
- Evangelia D Apostolidi
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Dimitra Psalla
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Taxiarchis Chassalevris
- Diagnostic Laboratory, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 11 Stavrou Voutyra Str., 54627, Thessaloniki, Greece
| | - Serafeim C Chaintoutis
- Diagnostic Laboratory, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 11 Stavrou Voutyra Str., 54627, Thessaloniki, Greece
| | - Nektarios D Giadinis
- Clinic of Farm Animals, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 11 Stavrou Voutyra Str., 54627, Thessaloniki, Greece
| | - Vassilios Psychas
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Chrysostomos I Dovas
- Diagnostic Laboratory, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 11 Stavrou Voutyra Str., 54627, Thessaloniki, Greece.
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Development of one-tube real-time RT-qPCR for the universal detection and quantification of Plum pox virus (PPV). J Virol Methods 2019; 263:10-13. [DOI: 10.1016/j.jviromet.2018.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/30/2018] [Accepted: 10/12/2018] [Indexed: 12/22/2022]
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Katsoulos PD, Karatzia MA, Dovas CI, Filioussis G, Papadopoulos E, Kiossis E, Arsenopoulos K, Papadopoulos T, Boscos C, Karatzias H. Evaluation of the in-field efficacy of oregano essential oil administration on the control of neonatal diarrhea syndrome in calves. Res Vet Sci 2017; 115:478-483. [PMID: 28779715 PMCID: PMC7185441 DOI: 10.1016/j.rvsc.2017.07.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 11/16/2022]
Abstract
The objective of this study was to evaluate under field conditions, whether daily administration of oregano essential oil is effective in preventing and/or diminishing the severity of neonatal diarrhea syndrome in calves aged less than 15days. Ninety-one newborn calves from three dairy farms were assigned into two groups; "Eco" group (n=46) calves were drenched with Greek oregano (Origanum vulgare ssp. Hirtum) essential oil (ECODIAR® liquid 5%) at the dose of 12.5mg/kg body weight once per day until the age of 10days. "Conts" group (n=45) calves were left untreated and served as controls. All animals were monitored daily for the incidence of diarrhea until the age of 15days and their fecal score was recorded. Fecal samples were collected on days 3, 6 and 10 for microbiological and parasitological evaluation. Average fecal score throughout the experiment, incidence of diarrhea, duration and severity of diarrhea episodes were significantly lower in Eco group compared to the controls. Daily administration of oregano essential oil in calves for the first 10days of their life effectively diminishes the severity of naturally acquired diarrhea under field conditions and, under certain hygiene practices, possess a preventive effect against neonatal diarrhea syndrome.
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Affiliation(s)
- Panagiotis D Katsoulos
- Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Maria A Karatzia
- Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Chrysostomos I Dovas
- Diagnostic Laboratory, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Filioussis
- Laboratory of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Elias Papadopoulos
- Laboratory of Parasitology and Parasitic Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Evangelos Kiossis
- Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Konstantinos Arsenopoulos
- Laboratory of Parasitology and Parasitic Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theologos Papadopoulos
- Diagnostic Laboratory, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Constantin Boscos
- Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Harilaos Karatzias
- Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
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