51
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Kim NY, Oh J, Lee SH, Kim H, Moon JS, Jeong RD. Rapid and Specific Detection of Apple stem grooving virus by Reverse Transcription-recombinase Polymerase Amplification. THE PLANT PATHOLOGY JOURNAL 2018; 34:575-579. [PMID: 30588230 PMCID: PMC6305176 DOI: 10.5423/ppj.nt.06.2018.0108] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/26/2018] [Accepted: 08/26/2018] [Indexed: 05/24/2023]
Abstract
Apple stem grooving virus (ASGV) is considered to cause the most economically important viral disease in pears in Korea. The current PCR-based methods used to diagnose ASGV are time-consuming in terms of target detection. In this study, a novel assay for specific ASGV detection that is based on reverse transcription-recombinase polymerase amplification is described. This assay has been shown to be reproducible and able to detect as little as 4.7 ng/μl of purified RNA obtained from an ASGV-infected plant. The major advantage of this assay is that the reaction for the target virus is completed in 1 min, and amplification only requires an incubation temperature of 42°C. This assay is a promising alternative method for pear breeding programs or virus-free certification laboratories.
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Affiliation(s)
- Nam-Yeon Kim
- Department of Applied Biology, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju 61185,
Korea
| | - Jonghee Oh
- School of Applied Biosciences, Kyungpook National University, Daegu 98411,
Korea
| | - Su-Heon Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 98411,
Korea
| | - Hongsup Kim
- Seed Testing & Research Center, Korea Seed & Variety Service, Gimcheon,
Korea
| | - Jae Sun Moon
- Plant Genome Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon,
Korea
| | - Rae-Dong Jeong
- Department of Applied Biology, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju 61185,
Korea
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52
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Zhao C, Sun F, Li X, Lan Y, Du L, Zhou T, Zhou Y. Reverse transcription-recombinase polymerase amplification combined with lateral flow strip for detection of rice black-streaked dwarf virus in plants. J Virol Methods 2018; 263:96-100. [PMID: 30395887 DOI: 10.1016/j.jviromet.2018.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 10/27/2022]
Abstract
Rice black-streaked dwarf virus (RBSDV) infects rice plants, a major crop, and is transmitted via the small brown planthopper (SBPH: Laodelphax striatellus Fallén), causing significant economic loss in China. To rapidly diagnose RBSDV, a reverse transcription-recombinase polymerase amplification (RT-RPA) method was developed using P10 virus-specific primers and probes. Detection of terminally labeled amplification products was achieved with the lateral flow strip method. Our results demonstrate that RT-RPA and RT-PCR assays offer similar sensitivity and specificity in RBSDV detection using cDNA as template. The optimum RT-RPA reaction temperature and time was 37 °C and 20 min, respectively. By screening twenty-one field suspected rice plants, the RT-RPA assay was confirmed to be simple, rapid and reliable. Thus, the RBSDV RT-RPA assay developed here will be a successful tool for quick diagnosis of RBSDV-infected rice plants.
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Affiliation(s)
- Chong Zhao
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China
| | - Feng Sun
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China
| | - Xuejuan Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China
| | - Ying Lan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China
| | - Linlin Du
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China
| | - Tong Zhou
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China
| | - Yijun Zhou
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; Key Laboratory of Food Safety Evaluation, MOA, Nanjing, 210014, China.
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53
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Fraser TA, Carver S, Martin AM, Mounsey K, Polkinghorne A, Jelocnik M. A Sarcoptes scabiei specific isothermal amplification assay for detection of this important ectoparasite of wombats and other animals. PeerJ 2018; 6:e5291. [PMID: 30065882 PMCID: PMC6065476 DOI: 10.7717/peerj.5291] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 07/02/2018] [Indexed: 11/20/2022] Open
Abstract
Background The globally distributed epidermal ectoparasite, Sarcoptes scabiei, is a serious health and welfare burden to at-risk human and animal populations. Rapid and sensitive detection of S. scabiei infestation is critical for intervention strategies. While direct microscopy of skin scrapings is a widely utilised diagnostic method, it has low sensitivity. PCR, alternatively, has been shown to readily detect mite DNA even in microscopy-negative skin scrapings. However, a limitation to the latter method is the requirements for specialised equipment and reagents. Such resources may not be readily available in regional or remote clinical settings and are an important consideration in diagnosis of this parasitic disease. Methodology A Loop Mediated Isothermal Amplification (LAMP) assay targeting the ITS-2 gene for S. scabiei was developed and evaluated on clinical samples from various hosts, previously screened with conventional S. scabies-specific PCR. Species specificity of the newly developed LAMP assay was tested against a range of DNA samples from other arthropods. The LAMP assays were performed on a real-time fluorometer as well as thermal cycler to evaluate an end-point of detection. Using skin scrapings, a rapid sample processing method was assessed to eliminate extensive processing times involved with DNA extractions prior to diagnostic assays, including LAMP. Results The S. scabiei LAMP assay was demonstrated to be species-specific and able to detect DNA extracted from a single mite within a skin scraping in under 30 minutes. Application of this assay to DNA extracts from skin scrapings taken from a range of hosts revealed 92.3% congruence (with 92.50% specificity and 100% sensitivity) to the conventional PCR detection of S. scabiei. Preliminary results have indicated that diagnostic outcome from rapidly processed dry skin scrapings using our newly developed LAMP is possible in approximately 40 minutes. Discussion We have developed a novel, rapid and robust molecular assay for detecting S. scabiei infesting humans and animals. Based on these findings, we anticipate that this assay will serve an important role as an ancillary diagnostic tool at the point-of-care, complementing existing diagnostic protocols for S. scabiei.
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Affiliation(s)
- Tamieka A Fraser
- USC Animal Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Australia.,Department of Biological Sciences, University of Tasmania, Sandy Bay, Australia
| | - Scott Carver
- Department of Biological Sciences, University of Tasmania, Sandy Bay, Australia
| | - Alynn M Martin
- Department of Biological Sciences, University of Tasmania, Sandy Bay, Australia
| | - Kate Mounsey
- USC Animal Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Australia.,School of Health and Sport Sciences, University of the Sunshine Coast, Sippy Downs, Australia
| | - Adam Polkinghorne
- USC Animal Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Australia
| | - Martina Jelocnik
- USC Animal Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Australia
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54
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Karakkat BB, Hockemeyer K, Franchett M, Olson M, Mullenberg C, Koch PL. Detection of root-infecting fungi on cool-season turfgrasses using loop-mediated isothermal amplification and recombinase polymerase amplification. J Microbiol Methods 2018; 151:90-98. [PMID: 29964073 DOI: 10.1016/j.mimet.2018.06.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/15/2018] [Accepted: 06/26/2018] [Indexed: 01/21/2023]
Abstract
Root-infecting fungal pathogens such as Gaeumannomyces avenae, Ophiosphaerella korrae, and Magnaporthiopsis poae cause extensive damage to amenity turfgrasses in temperate climates. The diseases they cause are difficult to diagnose by visual symptoms or microscopic inspection, and traditional polymerase chain reaction-based assays require large financial investments in equipment such as thermal cyclers and highly trained staff. The primary objective of this research was to develop fast and accurate detection assays for the three pathogens listed above that did not require the use of thermal cycling equipment. Loop-mediated isothermal amplification (LAMP) and recombinase polymerase amplification (RPA) assays were developed for each pathogen based on known fungal cultures. The assays were tested on 27 samples received at the University of Wisconsin's Turfgrass Diagnostic Laboratory in 2016 and 2017 and both methods provided accurate diagnoses within about 30 min with minimal sample preparation. However, the RPA assays had lower levels of false positive contamination relative to the LAMP assays and are more likely to be effective in a field or diagnostic laboratory for improved turf root-pathogen detection.
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Affiliation(s)
- Brijesh B Karakkat
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, USA
| | - Kurt Hockemeyer
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, USA
| | - Margot Franchett
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, USA
| | - Megan Olson
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, USA
| | - Cortney Mullenberg
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, USA
| | - Paul L Koch
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, USA.
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55
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Silva G, Oyekanmi J, Nkere CK, Bömer M, Kumar PL, Seal SE. Rapid detection of potyviruses from crude plant extracts. Anal Biochem 2018; 546:17-22. [PMID: 29378167 PMCID: PMC5873530 DOI: 10.1016/j.ab.2018.01.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/18/2018] [Accepted: 01/21/2018] [Indexed: 11/16/2022]
Abstract
Potyviruses (genus Potyvirus; family Potyviridae) are widely distributed and represent one of the most economically important genera of plant viruses. Therefore, their accurate detection is a key factor in developing efficient control strategies. However, this can sometimes be problematic particularly in plant species containing high amounts of polysaccharides and polyphenols such as yam (Dioscorea spp.). Here, we report the development of a reliable, rapid and cost-effective detection method for the two most important potyviruses infecting yam based on reverse transcription-recombinase polymerase amplification (RT-RPA). The developed method, named 'Direct RT-RPA', detects each target virus directly from plant leaf extracts prepared with a simple and inexpensive extraction method avoiding laborious extraction of high-quality RNA. Direct RT-RPA enables the detection of virus-positive samples in under 30 min at a single low operation temperature (37 °C) without the need for any expensive instrumentation. The Direct RT-RPA tests constitute robust, accurate, sensitive and quick methods for detection of potyviruses from recalcitrant plant species. The minimal sample preparation requirements and the possibility of storing RPA reagents without cold chain storage, allow Direct RT-RPA to be adopted in minimally equipped laboratories and with potential use in plant clinic laboratories and seed certification facilities worldwide.
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Affiliation(s)
- Gonçalo Silva
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK.
| | - Joshua Oyekanmi
- International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria
| | - Chukwuemeka K Nkere
- International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria; National Root Crops Research Institute, Km 8 Ikot Ekpene Road, PMB 7006, Umudike, Nigeria
| | - Moritz Bömer
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK
| | - P Lava Kumar
- International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria
| | - Susan E Seal
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK
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56
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Recombinase polymerase amplification applied to plant virus detection and potential implications. Anal Biochem 2018; 546:72-77. [DOI: 10.1016/j.ab.2018.01.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/24/2018] [Accepted: 01/25/2018] [Indexed: 11/15/2022]
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57
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Neethirajan S, Ragavan K, Weng X. Agro-defense: Biosensors for food from healthy crops and animals. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2017.12.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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58
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Shahin K, Gustavo Ramirez-Paredes J, Harold G, Lopez-Jimena B, Adams A, Weidmann M. Development of a recombinase polymerase amplification assay for rapid detection of Francisella noatunensis subsp. orientalis. PLoS One 2018; 13:e0192979. [PMID: 29444148 PMCID: PMC5812721 DOI: 10.1371/journal.pone.0192979] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/01/2018] [Indexed: 11/18/2022] Open
Abstract
Francisella noatunensis subsp. orientalis (Fno) is the causative agent of piscine francisellosis in warm water fish including tilapia. The disease induces chronic granulomatous inflammation with high morbidity and can result in high mortality. Early and accurate detection of Fno is crucial to set appropriate outbreak control measures in tilapia farms. Laboratory detection of Fno mainly depends on bacterial culture and molecular techniques. Recombinase polymerase amplification (RPA) is a novel isothermal technology that has been widely used for the molecular diagnosis of various infectious diseases. In this study, a recombinase polymerase amplification (RPA) assay for rapid detection of Fno was developed and validated. The RPA reaction was performed at a constant temperature of 42°C for 20 min. The RPA assay was performed using a quantitative plasmid standard containing a unique Fno gene sequence. Validation of the assay was performed not only by using DNA from Fno, closely related Francisella species and other common bacterial pathogens in tilapia farms, but also by screening 78 Nile tilapia and 5 water samples. All results were compared with those obtained by previously established real-time qPCR. The developed RPA showed high specificity in detection of Fno with no cross-detection of either the closely related Francisella spp. or the other tested bacteria. The Fno-RPA performance was highly comparable to the published qPCR with detection limits at 15 and 11 DNA molecules detected, respectively. The RPA gave quicker results in approximately 6 min in contrast to the qPCR that needed about 90 min to reach the same detection limit, taking only 2.7–3 min to determine Fno in clinical samples. Moreover, RPA was more tolerant to reaction inhibitors than qPCR when tested with field samples. The fast reaction, simplicity, cost-effectiveness, sensitivity and specificity make the RPA an attractive diagnostic tool that will contribute to controlling the infection through prompt on-site detection of Fno.
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Affiliation(s)
- Khalid Shahin
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
- Aquatic Animal Diseases Lab, Division of Aquaculture, National Institute of Oceanography and Fisheries, Suez, Egypt
- * E-mail:
| | - Jose Gustavo Ramirez-Paredes
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Graham Harold
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Benjamin Lopez-Jimena
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Alexandra Adams
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Manfred Weidmann
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
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59
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Lau HY, Botella JR. Advanced DNA-Based Point-of-Care Diagnostic Methods for Plant Diseases Detection. FRONTIERS IN PLANT SCIENCE 2017; 8:2016. [PMID: 29375588 PMCID: PMC5770625 DOI: 10.3389/fpls.2017.02016] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/13/2017] [Indexed: 05/07/2023]
Abstract
Diagnostic technologies for the detection of plant pathogens with point-of-care capability and high multiplexing ability are an essential tool in the fight to reduce the large agricultural production losses caused by plant diseases. The main desirable characteristics for such diagnostic assays are high specificity, sensitivity, reproducibility, quickness, cost efficiency and high-throughput multiplex detection capability. This article describes and discusses various DNA-based point-of care diagnostic methods for applications in plant disease detection. Polymerase chain reaction (PCR) is the most common DNA amplification technology used for detecting various plant and animal pathogens. However, subsequent to PCR based assays, several types of nucleic acid amplification technologies have been developed to achieve higher sensitivity, rapid detection as well as suitable for field applications such as loop-mediated isothermal amplification, helicase-dependent amplification, rolling circle amplification, recombinase polymerase amplification, and molecular inversion probe. The principle behind these technologies has been thoroughly discussed in several review papers; herein we emphasize the application of these technologies to detect plant pathogens by outlining the advantages and disadvantages of each technology in detail.
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Affiliation(s)
- Han Yih Lau
- Biotechnology and Nanotechnology Research Centre, Malaysian Agricultural Research and Development Institute, Serdang, Malaysia
| | - Jose R. Botella
- Plant Genetic Engineering Laboratory, School of Agriculture and Food Sciences, University of Queensland, Brisbane, QLD, Australia
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60
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Ma Q, Liu H, Ye F, Xiang G, Shan W, Xing W. Rapid and visual detection of Mycobacterium tuberculosis complex using recombinase polymerase amplification combined with lateral flow strips. Mol Cell Probes 2017; 36:43-49. [DOI: 10.1016/j.mcp.2017.08.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/21/2017] [Accepted: 08/21/2017] [Indexed: 01/30/2023]
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61
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Abstract
Recombinase polymerase amplification (RPA) is a highly sensitive and selective isothermal amplification technique, operating at 37-42°C, with minimal sample preparation and capable of amplifying as low as 1-10 DNA target copies in less than 20 min. It has been used to amplify diverse targets, including RNA, miRNA, ssDNA and dsDNA from a wide variety of organisms and samples. An ever increasing number of publications detailing the use of RPA are appearing and amplification has been carried out in solution phase, solid phase as well as in a bridge amplification format. Furthermore, RPA has been successfully integrated with different detection strategies, from end-point lateral flow strips to real-time fluorescent detection amongst others. This review focuses on the different methodologies and advances related to RPA technology, as well as highlighting some of the advantages and drawbacks of the technique.
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Affiliation(s)
- Ivan Magriñá Lobato
- INTERFIBIO Consolidated Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Països Catalans, 26, 43007, Tarragona, Spain
| | - Ciara K O'Sullivan
- INTERFIBIO Consolidated Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Països Catalans, 26, 43007, Tarragona, Spain.,Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
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62
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Moore MD, Jaykus LA. Recombinase polymerase amplification: a promising point-of-care detection method for enteric viruses. Future Virol 2017. [DOI: 10.2217/fvl-2017-0034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Viral enteric disease imposes a considerable public health and economic burden globally in both humans and livestock. Because enteric viruses are highly transmissible and resistant to numerous control strategies, making early in-field or point-of-care detection is important. There are problems with ligand-based detection strategies (e.g., sensitivity, false positive/negatives) for virus detection. Traditional amplification-based strategies are sensitive, but not as portable or rapid. Recombinase polymerase amplification is a new isothermal technique that utilizes bacterial genome repair enzymes to rapidly amplify target sequences. This report reviews the use of recombinase polymerase amplification for virus detection, showing that the method has favorable fundamental properties supporting its promise for rapid point-of-care detection of enteric viruses.
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Affiliation(s)
- Matthew D Moore
- Department of Food, Bioprocessing & Nutrition Sciences, North Carolina State University, Raleigh, NC 27695, USA
| | - Lee-Ann Jaykus
- Department of Food, Bioprocessing & Nutrition Sciences, North Carolina State University, Raleigh, NC 27695, USA
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63
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Babu B, Washburn BK, Ertek TS, Miller SH, Riddle CB, Knox GW, Ochoa-Corona FM, Olson J, Katırcıoğlu YZ, Paret ML. A field based detection method for Rose rosette virus using isothermal probe-based Reverse transcription-recombinase polymerase amplification assay. J Virol Methods 2017; 247:81-90. [PMID: 28583856 DOI: 10.1016/j.jviromet.2017.05.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 02/07/2017] [Accepted: 05/31/2017] [Indexed: 12/20/2022]
Abstract
Rose rosette disease, caused by Rose rosette virus (RRV; genus Emaravirus) is a major threat to the rose industry in the U.S. The only strategy currently available for disease management is early detection and eradication of the infected plants, thereby limiting its potential spread. Current RT-PCR based diagnostic methods for RRV are time consuming and are inconsistent in detecting the virus from symptomatic plants. Real-time RT-qPCR assay is highly sensitive for detection of RRV, but it is expensive and requires well-equipped laboratories. Both the RT-PCR and RT-qPCR cannot be used in a field-based testing for RRV. Hence a novel probe based, isothermal reverse transcription-recombinase polymerase amplification (RT-exoRPA) assay, using primer/probe designed based on the nucleocapsid gene of the RRV has been developed. The assay is highly specific and did not give a positive reaction to other viruses infecting roses belonging to both inclusive and exclusive genus. Dilution assays using the in vitro transcript showed that the primer/probe set is highly sensitive, with a detection limit of 1 fg/μl. In addition, a rapid technique for the extraction of viral RNA (<5min) has been standardized from RRV infected tissue sources, using PBS-T buffer (pH 7.4), which facilitates the virus adsorption onto the PCR tubes at 4°C for 2min, followed by denaturation to release the RNA. RT-exoRPA analysis of the infected plants using the primer/probe indicated that the virus could be detected from leaves, stems, petals, pollen, primary roots and secondary roots. In addition, the assay was efficiently used in the diagnosis of RRV from different rose varieties, collected from different states in the U.S. The entire process, including the extraction can be completed in 25min, with less sophisticated equipments. The developed assay can be used with high efficiency in large scale field testing for rapid detection of RRV in commercial nurseries and landscapes.
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Affiliation(s)
- Binoy Babu
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, USA.
| | - Brian K Washburn
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA
| | - Tülin Sarigül Ertek
- Directorate of Plant Protection Central Institute, Yenimahalle, Ankara 06172, Turkey
| | - Steven H Miller
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA
| | - Charles B Riddle
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, USA
| | - Gary W Knox
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, USA
| | - Francisco M Ochoa-Corona
- Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Jennifer Olson
- Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, USA
| | | | - Mathews L Paret
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, USA; Department of Plant Pathology, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA.
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64
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Development of a recombinase polymerase amplification assay for the diagnosis of banana bunchy top virus in different banana cultivars. Arch Virol 2017; 162:2791-2796. [DOI: 10.1007/s00705-017-3399-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 04/02/2017] [Indexed: 01/21/2023]
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65
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Kappagantu M, Villamor DEV, Bullock JM, Eastwell KC. A rapid isothermal assay for the detection of Hop stunt viroid in hop plants (Humulus lupulus), and its application in disease surveys. J Virol Methods 2017; 245:81-85. [PMID: 28392409 DOI: 10.1016/j.jviromet.2017.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 01/13/2017] [Accepted: 04/05/2017] [Indexed: 11/15/2022]
Abstract
Hop stunt disease caused by Hop stunt viroid (HSVd) is a growing threat to hop cultivation globally. HSVd spreads mainly by use of contaminated planting material and by mechanical means. Thorough testing of hop yards and removal of infected bines are critical components of efforts to control the spread of the disease. Reverse transcription-polymerase chain reaction (RT-PCR) has become the primary technique used for HSVd detection; however, sample handling and analysis are technically challenging. In this study, a robust reverse transcription-recombinase polymerase amplification (RT-RPA) assay was developed to facilitate analysis of multiple samples. The assay was optimized with all major variants of HSVd from other host species in addition to hop variants. Used in conjunction with sample collection cards, RT-RPA accommodates large sample numbers. Greenhouse and farm samples tested with RT-RPA were also tested with RT-PCR and a 100% correlation between the two techniques was found.
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Affiliation(s)
- Madhu Kappagantu
- Department of Plant Pathology, Washington State University, IAREC, 24106 North Bunn Road, Prosser, WA 99350, USA.
| | - Dan Edward V Villamor
- Department of Plant Pathology, Washington State University, IAREC, 24106 North Bunn Road, Prosser, WA 99350, USA
| | - Jeff M Bullock
- Department of Plant Pathology, Washington State University, IAREC, 24106 North Bunn Road, Prosser, WA 99350, USA
| | - Kenneth C Eastwell
- Department of Plant Pathology, Washington State University, IAREC, 24106 North Bunn Road, Prosser, WA 99350, USA
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Babu B, Washburn BK, Miller SH, Poduch K, Sarigul T, Knox GW, Ochoa-Corona FM, Paret ML. A rapid assay for detection of Rose rosette virus using reverse transcription-recombinase polymerase amplification using multiple gene targets. J Virol Methods 2016; 240:78-84. [PMID: 27915036 DOI: 10.1016/j.jviromet.2016.11.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 11/22/2016] [Accepted: 11/27/2016] [Indexed: 12/12/2022]
Abstract
Rose rosette disease caused by Rose rosette virus (RRV; genus Emaravirus) is the most economically relevant disease of Knock Out® series roses in the U.S. As there are no effective chemical control options for the disease, the most critical disease management strategies include the use of virus free clean plants for propagation and early detection and destruction of infected plants. The current diagnostic techniques for RRV including end-point reverse transcription-polymerase chain reaction (RT-PCR) and real-time PCR (RT-qPCR) are highly sensitive, but limited to diagnostic labs with the equipment and expertise; and is time consuming. To address this limitation, an isothermal reverse transcription-recombinase polymerase amplification (RT-RPA) assay based on multiple gene targets for specific detection of RRV was developed. The assay is highly specific and did not cross react with other viruses belonging to the inclusive and exclusive genus. Dilution assays using the in vitro transcripts showed that the primer sets designed (RPA-267, RPA-131, and RPA-321) are highly sensitive, consistently detecting RRV with a detection limit of 1fg/μL. Testing of the infected plants using the primer sets indicated that the virus could be detected from leaves, stems and petals of roses. The primer pair RPA-267 produced 100% positive detection of the virus from infected leaf tissues, while primer set RPA-131 produced 100% detection from stems and petals. The primer set RPA-321 produced 83%, 87.5% and 75% positive detection from leaves, petals and stem tissues, respectively. In addition, the assay has been efficiently used in the detection of RRV infecting Knock Out® roses, collected from different states in the U.S. The assay can be completed in 20min as compared to the end-point RT-PCR assay (3-4h) and RT-qPCR (1.5h). The RT-RPA assay is reliable, rapid, highly sensitive, and can be easily used in diagnostic laboratories for detection of RRV with no need for any special equipment.
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Affiliation(s)
- Binoy Babu
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, United States.
| | - Brian K Washburn
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, United States
| | - Steven H Miller
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, United States
| | - Kristina Poduch
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, United States
| | - Tulin Sarigul
- Directorate of Plant Protection Central Institute, Yenimahalle, Ankara 06172, Turkey
| | - Gary W Knox
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, United States
| | - Francisco M Ochoa-Corona
- Oklahoma State University, National Institute for Microbial Forensics & Food and Agricultural Biosecurity, Stillwater, OK 74078, United States
| | - Mathews L Paret
- North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Quincy, FL 32351, United States; Department of Plant Pathology, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, United States.
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67
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Ultrasensitive, rapid and inexpensive detection of DNA using paper based lateral flow assay. Sci Rep 2016; 6:37732. [PMID: 27886248 PMCID: PMC5123575 DOI: 10.1038/srep37732] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 10/31/2016] [Indexed: 01/07/2023] Open
Abstract
Sensitive, specific, rapid, inexpensive and easy-to-use nucleic acid tests for use at the point-of-need are critical for the emerging field of personalised medicine for which companion diagnostics are essential, as well as for application in low resource settings. Here we report on the development of a point-of-care nucleic acid lateral flow test for the direct detection of isothermally amplified DNA. The recombinase polymerase amplification method is modified slightly to use tailed primers, resulting in an amplicon with a duplex flanked by two single stranded DNA tails. This tailed amplicon facilitates detection via hybridisation to a surface immobilised oligonucleotide capture probe and a gold nanoparticle labelled reporter probe. A detection limit of 1 × 10-11 M (190 amol), equivalent to 8.67 × 105 copies of DNA was achieved, with the entire assay, both amplification and detection, being completed in less than 15 minutes at a constant temperature of 37 °C. The use of the tailed primers obviates the need for hapten labelling and consequent use of capture and reporter antibodies, whilst also avoiding the need for any post-amplification processing for the generation of single stranded DNA, thus presenting an assay that can facilely find application at the point of need.
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Prescott MA, Reed AN, Jin L, Pastey MK. Rapid Detection of Cyprinid Herpesvirus 3 in Latently Infected Koi by Recombinase Polymerase Amplification. JOURNAL OF AQUATIC ANIMAL HEALTH 2016; 28:173-180. [PMID: 27485254 PMCID: PMC5958048 DOI: 10.1080/08997659.2016.1185048] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Since the emergence of cyprinid herpesvirus 3 (CyHV-3), outbreaks have been devastating to Common Carp Cyprinus carpio and koi (a variant of Common Carp), leading to high economic losses. Current diagnostics for detecting CyHV-3 are limited in sensitivity and are further complicated by latency. Here we describe the detection of CyHV-3 by recombinase polymerase amplification (RPA). The RPA assay can detect as low as 10 copies of the CyHV-3 genome by an isothermal reaction and yields results in approximately 20 min. Using the RPA assay, the CyHV-3 genome can be detected in the total DNA of white blood cells isolated from koi latently infected with CyHV-3, while less than 10% of the latently infected koi can be detected by a real-time PCR assay in the total DNA of white blood cells. In addition, RPA products can be detected in a lateral flow device that is cheap and fast and can be used outside of the diagnostic lab. The RPA assay and lateral flow device provide for the rapid, sensitive, and specific amplification of CyHV-3 that with future modifications for field use and validation could lead to enhanced surveillance and early diagnosis of CyHV-3 in the laboratory and field. Received September 14, 2015; accepted April 9, 2016.
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Affiliation(s)
- Meagan A. Prescott
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis Oregon 97331
- Department of Microbiology, College of Science, Oregon State University, Corvallis Oregon 97331
| | - Aimee N. Reed
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis Oregon 97331
- Department of Microbiology, College of Science, Oregon State University, Corvallis Oregon 97331
| | - Ling Jin
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis Oregon 97331
- Department of Microbiology, College of Science, Oregon State University, Corvallis Oregon 97331
| | - Manoj K. Pastey
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis Oregon 97331
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69
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Hammond RW, Zhang S. Development of a rapid diagnostic assay for the detection of tomato chlorotic dwarf viroid based on isothermal reverse-transcription-recombinase polymerase amplification. J Virol Methods 2016; 236:62-67. [PMID: 27427473 DOI: 10.1016/j.jviromet.2016.06.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 06/07/2016] [Accepted: 06/26/2016] [Indexed: 12/27/2022]
Abstract
A molecular diagnostic assay utilizing reverse transcription-recombinase polymerase amplification (RT-RPA) at an isothermal constant temperature of 39°C and target-specific primers and probe were developed for the rapid, sensitive, and specific detection of tomato chlorotic dwarf viroid (TCDVd) in infected leaf and seed tissues. The performance of the AmplifyRP(®) Acceler8™ RT-RPA diagnostic assay, utilizing a lateral flow strip contained within an amplicon detection chamber, was evaluated and the results were compared with a standard RT-PCR assay. The AmplifyRP(®) Acceler8™ assay was specific for TCDVd in leaf and seed tissues, its sensitivity was comparable to conventional RT-PCR in leaf tissues, and it does not require extensive sample purification, specialized equipment, or technical expertise. This is the first report utilizing an RT-RPA assay to detect viroids and the assay can be used both in the laboratory and in the field for TCDVd detection.
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Affiliation(s)
- Rosemarie W Hammond
- USDA ARS Molecular Plant Pathology Laboratory, Beltsville, MD 20705, United States.
| | - Shulu Zhang
- Agdia Inc., 52642 County Road 1, Elkhart, IN 46514, United States
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70
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Daher RK, Stewart G, Boissinot M, Bergeron MG. Recombinase Polymerase Amplification for Diagnostic Applications. Clin Chem 2016; 62:947-58. [PMID: 27160000 PMCID: PMC7108464 DOI: 10.1373/clinchem.2015.245829] [Citation(s) in RCA: 386] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 03/15/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND First introduced in 2006, recombinase polymerase amplification (RPA) has stirred great interest, as evidenced by 75 publications as of October 2015, with 56 of them just in the last 2 years. The widespread adoption of this isothermal molecular tool in many diagnostic fields represents an affordable (approximately 4.3 USD per test), simple (few and easy hands-on steps), fast (results within 5–20 min), and sensitive (single target copy number detected) method for the identification of pathogens and the detection of single nucleotide polymorphisms in human cancers and genetically modified organisms. CONTENT This review summarizes the current knowledge on RPA. The molecular diagnostics of various RNA/DNA pathogens is discussed while highlighting recent applications in clinical settings with focus on point-of-care (POC) bioassays and on automated fluidic platforms. The strengths and limitations of this isothermal method are also addressed. SUMMARY RPA is becoming a molecular tool of choice for the rapid, specific, and cost-effective identification of pathogens. Owing to minimal sample-preparation requirements, low operation temperature (25–42 °C), and commercial availability of freeze-dried reagents, this method has been applied outside laboratory settings, in remote areas, and interestingly, onboard automated sample-to-answer microfluidic devices. RPA is undoubtedly a promising isothermal molecular technique for clinical microbiology laboratories and emergence response in clinical settings.
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Affiliation(s)
- Rana K Daher
- Centre de recherche en infectiologie de l'Université Laval (CRI), Axe maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, Québec City (Québec), Canada; Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec City (Québec), Canada
| | - Gale Stewart
- Centre de recherche en infectiologie de l'Université Laval (CRI), Axe maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, Québec City (Québec), Canada
| | - Maurice Boissinot
- Centre de recherche en infectiologie de l'Université Laval (CRI), Axe maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, Québec City (Québec), Canada
| | - Michel G Bergeron
- Centre de recherche en infectiologie de l'Université Laval (CRI), Axe maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, Québec City (Québec), Canada; Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec City (Québec), Canada.
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71
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Londoño MA, Harmon CL, Polston JE. Evaluation of recombinase polymerase amplification for detection of begomoviruses by plant diagnostic clinics. Virol J 2016; 13:48. [PMID: 27000806 PMCID: PMC4802622 DOI: 10.1186/s12985-016-0504-8] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 03/14/2016] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Plant viruses in the genus Begomovirus, family Geminiviridae often cause substantial crop losses. These viruses have been emerging in many locations throughout the tropics and subtropics. Like many plant viruses, they are often not recognized by plant diagnostic clinics due in large part to the lack of rapid and cost effective assays. An isothermal amplification assay, Recombinase polymerase amplification (RPA), was evaluated for its ability to detect three begomoviruses and for its suitability for use in plant diagnostic clinics. Methods for DNA extraction and separation of amplicons from proteins used in the assay were modified and compared to RPA manufacturer's protocols. The modified RPA assays were compared to PCR assays for sensitivity, use in downstream applications, cost, and speed. RESULTS Recombinase polymerase amplification (RPA) assays for the detection of Bean golden yellow mosaic virus, Tomato mottle virus and Tomato yellow leaf curl virus (TYLCV) were specific, only amplifying the target viruses in three different host species. RPA was able to detect the target virus when the template was in a crude extract generated using a simple inexpensive extraction method, while PCR was not. Separation of RPA-generated amplicons from DNA-binding proteins could be accomplished by several methods, all of which were faster and less expensive than that recommended by the manufacturer. Use of these modifications resulted in an RPA assay that was faster than PCR but with a similar reagent cost. This modified RPA was the more cost effective assay when labor is added to the cost since RPA can be performed much faster than PCR. RPA had a sensitivity approximate to that of ELISA when crude extract was used as template. RPA-generated amplicons could be used in downstream applications (TA cloning, digestion with a restriction endonuclease, direct sequencing) similar to PCR but unlike some other isothermal reactions. CONCLUSIONS RPA could prove useful for the cost effective detection of plant viruses by plant diagnostic clinics. It can be performed in one hour or less with a reagent cost similar to that of PCR but with a lower labor cost, and with an acceptable level of sensitivity and specificity.
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Affiliation(s)
- Maria A. Londoño
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611 USA
| | - Carrie L. Harmon
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611 USA
| | - Jane E. Polston
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611 USA
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Cirilli M, Geuna F, Babini AR, Bozhkova V, Catalano L, Cavagna B, Dallot S, Decroocq V, Dondini L, Foschi S, Ilardi V, Liverani A, Mezzetti B, Minafra A, Pancaldi M, Pandolfini T, Pascal T, Savino VN, Scorza R, Verde I, Bassi D. Fighting Sharka in Peach: Current Limitations and Future Perspectives. FRONTIERS IN PLANT SCIENCE 2016; 7:1290. [PMID: 27625664 PMCID: PMC5004351 DOI: 10.3389/fpls.2016.01290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/12/2016] [Indexed: 05/05/2023]
Abstract
Sharka, caused by Plum Pox Virus (PPV), is by far the most important infectious disease of peach [P. persica (L.) Batsch] and other Prunus species. The progressive spread of the virus in many important growing areas throughout Europe poses serious issues to the economic sustainability of stone fruit crops, peach in particular. The adoption of internationally agreed-upon rules for diagnostic tests, strain-specific monitoring schemes and spatial-temporal modeling of virus spread, are all essential for a more effective sharka containment. The EU regulations on nursery activity should be modified based on the zone delimitation of PPV presence, limiting open-field production of propagation materials only to virus-free areas. Increasing the efficiency of preventive measures should be augmented by the short-term development of resistant cultivars. Putative sources of resistance/tolerance have been recently identified in peach germplasm, although the majority of novel resistant sources to PPV-M have been found in almond. However, the complexity of introgression from related-species imposes the search for alternative strategies. The use of genetic engineering, particularly RNA interference (RNAi)-based approaches, appears as one of the most promising perspectives to introduce a durable resistance to PPV in peach germplasm, notwithstanding the well-known difficulties of in vitro plant regeneration in this species. In this regard, rootstock transformation to induce RNAi-mediated systemic resistance would avoid the transformation of numerous commercial cultivars, and may alleviate consumer resistance to the use of GM plants.
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Affiliation(s)
- Marco Cirilli
- Department of Agricultural and Environmental Sciences (DISAA), University of MilanMilan, Italy
| | - Filippo Geuna
- Department of Agricultural and Environmental Sciences (DISAA), University of MilanMilan, Italy
| | - Anna R. Babini
- Phytosanitary Service, Regione Emilia-RomagnaBologna, Italy
| | - Valentina Bozhkova
- Department of Breeding, Genetic Resources and Biotechnology, Fruit-Growing InstitutePlovdiv, Bulgaria
| | - Luigi Catalano
- Centro Interprofessionale per le Attività VivaisticheRoma, Italy
| | | | | | - Véronique Decroocq
- INRA, Université de Bordeaux, UMR 1332 Biologie du Fruit et PathologieVillenave d’Ornon, France
| | - Luca Dondini
- Dipartimento di Scienze Agrarie, University of BolognaBologna, Italy
| | | | - Vincenza Ilardi
- Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di Ricerca per la Patologia VegetaleRome, Italy
| | - Alessandro Liverani
- Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Unità di Ricerca per la Frutticoltura di ForlìForlì, Italy
| | - Bruno Mezzetti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle MarcheAncona, Italy
| | | | | | | | | | - Vito N. Savino
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti (DiSSPA), Università degli Studi di Bari Aldo MoroBari, Italy
| | - Ralph Scorza
- Appalachian Fruit Research Station, United States Department of Agriculture-Agricultural Research Service, KearneysvilleWV, USA
| | - Ignazio Verde
- Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di Ricerca per la FrutticolturaRome, Italy
| | - Daniele Bassi
- Department of Agricultural and Environmental Sciences (DISAA), University of MilanMilan, Italy
- *Correspondence: Daniele Bassi,
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Silva G, Bömer M, Nkere C, Lava Kumar P, Seal SE. Rapid and specific detection of Yam mosaic virus by reverse-transcription recombinase polymerase amplification. J Virol Methods 2015; 222:138-44. [DOI: 10.1016/j.jviromet.2015.06.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 06/16/2015] [Accepted: 06/20/2015] [Indexed: 12/21/2022]
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Malecka K, Michalczuk L, Radecka H, Radecki J. Ion-channel genosensor for the detection of specific DNA sequences derived from Plum Pox Virus in plant extracts. SENSORS 2014; 14:18611-24. [PMID: 25302809 PMCID: PMC4239951 DOI: 10.3390/s141018611] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 09/17/2014] [Accepted: 09/26/2014] [Indexed: 12/12/2022]
Abstract
A DNA biosensor for detection of specific oligonucleotides sequences of Plum Pox Virus (PPV) in plant extracts and buffer is proposed. The working principles of a genosensor are based on the ion-channel mechanism. The NH2-ssDNA probe was deposited onto a glassy carbon electrode surface to form an amide bond between the carboxyl group of oxidized electrode surface and amino group from ssDNA probe. The analytical signals generated as a result of hybridization were registered in Osteryoung square wave voltammetry in the presence of [Fe(CN)6]3-/4- as a redox marker. The 22-mer and 42-mer complementary ssDNA sequences derived from PPV and DNA samples from plants infected with PPV were used as targets. Similar detection limits of 2.4 pM (31.0 pg/mL) and 2.3 pM (29.5 pg/mL) in the concentration range 1-8 pM were observed in the presence of the 22-mer ssDNA and 42-mer complementary ssDNA sequences of PPV, respectively. The genosensor was capable of discriminating between samples consisting of extracts from healthy plants and leaf extracts from infected plants in the concentration range 10-50 pg/mL. The detection limit was 12.8 pg/mL. The genosensor displayed good selectivity and sensitivity. The 20-mer partially complementary DNA sequences with four complementary bases and DNA samples from healthy plants used as negative controls generated low signal.
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Affiliation(s)
- Kamila Malecka
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Lech Michalczuk
- Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland.
| | - Hanna Radecka
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Jerzy Radecki
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
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