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Devendran R, Kavalappara SR, Simmons AM, Bag S. Whitefly-Transmitted Viruses of Cucurbits in the Southern United States. Viruses 2023; 15:2278. [PMID: 38005954 PMCID: PMC10675411 DOI: 10.3390/v15112278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023] Open
Abstract
Cucurbits are economically important crops that are widely cultivated in many parts of the world, including the southern US. In recent years, higher temperatures have favored the rapid build-up of whiteflies in the fall-grown cucurbits in this region. As a result, whitefly-transmitted viruses (WTVs) have severely impacted the marketable yield of cucurbits. In this review, we discuss three major groups of WTVs negatively impacting cucurbit cultivation in the southern US, including begomoviruses, criniviruses, and ipomoviruses. Here, we discuss the available information on the biology, epidemiology and advances made toward detecting and managing these viruses, including sources of resistance and cultural practices.
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Affiliation(s)
| | | | - Alvin M. Simmons
- U.S. Vegetable Laboratory, Agricultural Research Service, United States Department of Agriculture, Charleston, SC 29414, USA
| | - Sudeep Bag
- Department of Plant Pathology, University of Georgia, Tifton, GA 31793, USA
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2
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Jailani AAK, Paret ML. Development of a multiplex RT-RPA assay for simultaneous detection of three viruses in cucurbits. MOLECULAR PLANT PATHOLOGY 2023; 24:1443-1450. [PMID: 37462133 PMCID: PMC10576173 DOI: 10.1111/mpp.13380] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 10/15/2023]
Abstract
Begomoviruses and criniviruses, vectored by whiteflies (Bemisia tabaci), are important threats to crops worldwide. In recent years, the spread of cucurbit leaf crumple virus (CuLCrV), cucurbit yellow stunting disorder virus (CYSDV) and cucurbit chlorotic yellows virus (CCYV) on cucurbit crops has been reported to cause devastating crop losses in many regions of the world. In this study, a multiplex recombinase polymerase amplification (RPA) assay, an isothermal technique for rapid and simultaneous detection of DNA and RNA viruses CuLCrV, CYSDV and CCYV was developed. Highly specific and sensitive multiplex RPA primers for the coat protein region of these viruses were created and evaluated. The sensitivity of the multiplex RPA assay was examined using serially diluted plasmid containing the target regions. The results demonstrated that multiplex RPA primers have high sensitivity with a detection limit of a single copy of the viruses. The multiplex RPA primers were specific to the target as indicated by testing against other begomoviruses, potyviruses and an ilarvirus, and no nonspecific amplifications were noted. The primers simultaneously detected mixed infection of CCYV, CYSDV and CuLCrV in watermelon and squash crude extracts. This study is the first report of a multiplex RPA assay for simultaneous detection of mixed infection of DNA and RNA plant viruses.
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Affiliation(s)
- A. Abdul Kader Jailani
- North Florida Research and Education CenterUniversity of FloridaQuincyFloridaUSA
- Plant Pathology DepartmentUniversity of FloridaGainesvilleFloridaUSA
| | - Mathews L. Paret
- North Florida Research and Education CenterUniversity of FloridaQuincyFloridaUSA
- Plant Pathology DepartmentUniversity of FloridaGainesvilleFloridaUSA
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3
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Çelik A, Emiralioğlu O, Yeken MZ, Çiftçi V, Özer G, Kim Y, Baloch FS, Chung YS. A novel study on bean common mosaic virus accumulation shows disease resistance at the initial stage of infection in Phaseolus vulgaris. Front Genet 2023; 14:1136794. [PMID: 37021006 PMCID: PMC10067576 DOI: 10.3389/fgene.2023.1136794] [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: 01/03/2023] [Accepted: 03/06/2023] [Indexed: 04/07/2023] Open
Abstract
Accurate and early diagnosis of bean common mosaic virus (BCMV) in Phaseolus vulgaris tissues is critical since the pathogen can spread easily and have long-term detrimental effects on bean production. The use of resistant varieties is a key factor in the management activities of BCMV. The study reported here describes the development and application of a novel SYBR Green-based quantitative real-time PCR (qRT-PCR) assay targeting the coat protein gene to determine the host sensitivity to the specific NL-4 strain of BCMV. The technique showed high specificity, validated by melting curve analysis, without cross-reaction. Further, the symptoms development of twenty advanced common bean genotypes after mechanical BCMV-NL-4 infection was evaluated and compared. The results showed that common bean genotypes exhibit varying levels of host susceptibility to this BCMV strain. The YLV-14 and BRS-22 genotypes were determined as the most resistant and susceptible genotypes, respectively, in terms of aggressiveness of symptoms. The accumulation of BCMV was analyzed in the resistant and susceptible genotypes 3, 6, and 9 days following the inoculation by the newly developed qRT-PCR. The mean cycle threshold (Ct) values showed that the viral titer was significantly lower in YLV-14, which was evident in both root and leaf 3 days after the inoculation. The qRT-PCR thus facilitated an accurate, specific, and feasible assessment of BCMV accumulation in bean tissues even in low virus titers, allowing novel clues in selecting resistant genotypes in the early stages of infection, which is critical for disease management. To the best of our knowledge, this is the first study of a successfully performed qRT-PCR to estimate BCMV quantification.
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Affiliation(s)
- Ali Çelik
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Türkiye
- *Correspondence: Ali Çelik, ; Göksel Özer, ; Faheem Shehzad Baloch, ; Yong Suk Chung,
| | - Orkun Emiralioğlu
- Department of Field Crops, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Türkiye
| | - Mehmet Zahit Yeken
- Department of Field Crops, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Türkiye
| | - Vahdettin Çiftçi
- Department of Field Crops, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Türkiye
| | - Göksel Özer
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Türkiye
- *Correspondence: Ali Çelik, ; Göksel Özer, ; Faheem Shehzad Baloch, ; Yong Suk Chung,
| | - Yoonha Kim
- Laboratory of Crop Production, Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Faheem Shehzad Baloch
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, Türkiye
- *Correspondence: Ali Çelik, ; Göksel Özer, ; Faheem Shehzad Baloch, ; Yong Suk Chung,
| | - Yong Suk Chung
- Department of Plant Resources and Environment, Jeju National University, Jeju, Republic of Korea
- *Correspondence: Ali Çelik, ; Göksel Özer, ; Faheem Shehzad Baloch, ; Yong Suk Chung,
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Wang S, Jiang N, Jiang L, Zhuang Q, Chen Q, Hou G, Xiao Z, Zhao R, Li Y, Zhao C, Zhang F, Yu J, Li J, Liu H, Sun F, Wang K. Establishment and application of a quadruple real-time RT-PCR for detecting avian metapneumovirus. PLoS One 2022; 17:e0270708. [PMID: 35763505 PMCID: PMC9239461 DOI: 10.1371/journal.pone.0270708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 06/15/2022] [Indexed: 12/02/2022] Open
Abstract
In order to develop an appropriate method for high-throughput detection of avian metapneumovirus, a quadruple real-time reverse-transcription polymerase chain reaction assay was established with four pairs of specific primers and four specific probes based on the G or M gene of aMPV-A, aMPV-B, aMPV-C and aMPV-D. Its specificity and sensitivity were evaluated, and clinical samples were tested by the method. The results showed that all the four subgroups of avian metapneumovirus can be detected in the quadruple real-time RT-PCR assay simultaneously, with a detection limit of 100-1000 cRNA copies/reaction. The other common poultry viruses were negative. In the avian clinical sample detection, 39 out of 1920 clinical samples collected from 8 provinces were positive. Compared with published RT-PCR assays, the κ value of the quadruple real-time RT-PCR assay in 1920 avian clinical samples was 1.000 (P < 0.001). The established method could be used for the rapid detection of the four subgroups of avian metapneumovirus with high specificity and high sensitivity.
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Affiliation(s)
- Suchun Wang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Nan Jiang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
- Agricultural College, Yanbian University, Yanji, Jilin, China
| | - Lijian Jiang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
- Agricultural College, Yanbian University, Yanji, Jilin, China
| | - Qingye Zhuang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
- Shandong Vocational Animal Science and Veterinary College, Weifang, Shandong, China
| | - Qiong Chen
- Xiamen Agriculture Product Quality and Safety Test Centre, Xiamen, Fujian, China
| | - Guangyu Hou
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Zhiyu Xiao
- Agricultural College, Yanbian University, Yanji, Jilin, China
| | - Ran Zhao
- Xiamen Agriculture Product Quality and Safety Test Centre, Xiamen, Fujian, China
| | - Yang Li
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Chenglong Zhao
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
- Agricultural College, Yanbian University, Yanji, Jilin, China
| | - Fuyou Zhang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Jianmin Yu
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Jinping Li
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Hualei Liu
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Fuliang Sun
- Agricultural College, Yanbian University, Yanji, Jilin, China
| | - Kaicheng Wang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
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Xinying Y, Xin L, Lili Y, Qiuyue Z, Yongzhe P, Jijuan C. Detection of Cucumber green mottle mosaic virus in low-concentration virus-infected seeds by improved one-step pre-amplification RT-qPCR. PLANT METHODS 2022; 18:70. [PMID: 35619137 PMCID: PMC9134592 DOI: 10.1186/s13007-022-00901-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/03/2022] [Indexed: 05/31/2023]
Abstract
BACKGROUND Seeds were an important medium for long-distance transmission of plant viruses. Therefore, appropriate, more sensitive methods for detecting low concentrations of virus-infected in seeds were crucial to ensure the quality of seed lots. In this study, we have developed a one-step pre-amplification reverse transcription quantitative PCR (RT-qPCR) assay based on the TaqMan technology to detect Cucumber green mottle mosaic virus (CGMMV) in zucchini seeds. RESULT Seed powder samples with simulated CGMMV-infected at a low concentration were prepared (the mass ratio 1:900 and 1:1000), and their uniformity were verified using one-step pre-amplification RT-qPCR. We used one-step pre-amplification RT-qPCR to detect CGMMV in low-concentration virus-infected seeds and compared this method with universal RT-qPCR and double antibody sandwich-enzyme-linked immunosorbent (DAS-ELISA) assay, the main methods used for virus detection in seeds. The minimum limit of detection (LOD) of the improved one-step pre-amplification RT-qPCR assays for simulated CGMMV-infected seeds in large lots seeds samples were 0.1%. CONCLUSIONS One-step pre-amplification RT-qPCR assays could reliably and stably detected a single CGMMV-infected seed in 1000 seeds and demonstrated a higher detection sensitivity than universal RT-qPCR (infected seeds versus healthy seeds 1:900) and DAS-ELISA assay (infected seeds versus healthy seeds 1:500). Our improved one-step pre-amplification RT-qPCR assay have proved to be very suitable for the analysis of large seed lots.
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Affiliation(s)
- Yin Xinying
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China
| | - Li Xin
- Dalian Customs Technology Center, Dalian, 116001, China
| | - Yang Lili
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China
| | - Zheng Qiuyue
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China
| | - Piao Yongzhe
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China.
| | - Cao Jijuan
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China.
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6
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Zhang Z, He H, Yan M, Zhao C, Lei C, Li J, Yan F. Widely targeted analysis of metabolomic changes of Cucumis sativus induced by cucurbit chlorotic yellows virus. BMC PLANT BIOLOGY 2022; 22:158. [PMID: 35361125 PMCID: PMC8969345 DOI: 10.1186/s12870-022-03555-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/22/2022] [Indexed: 05/03/2023]
Abstract
BACKGROUND Plant metabolites play vital roles in regulating the behavior of herbivore insects. Virus infection can universally alter plant metabolites to manipulate the orientation and feeding behaviors of insect vector, to favor the transmission of virus. Thus, determining the differentially accumulated metabolites of plant upon virus infection could provide insights into understanding how the triple interactions among plant, virus and insect vector happens. Our previous studies have found that vector whitefly Bemisia tabaci (Gennadius, Hemiptera: Aleyrodidae) showed different orientation behavior and performance on CCYV-infected and healthy cucumber plants. Cucurbit chlorotic yellows virus (CCYV) is exclusively transmitted by B. tabaci in a semi-persistent mode. In this study, we take the CCYV, B. tabaci and cucumber as a research system to explore the functions of phyto-metabolites in the triple interactions. RESULTS A total of 612 metabolites changed upon CCYV infection were monitored. Metabolites mainly enriched in flavonoids, lipids, nucleotides and their derivatives. At 7 days post CCYV inoculation (dpi), the contents of lipids, terpenoids and flavonoids remarkably decreased, while amino acids, nucleotides and their derivatives notably up-accumulated. At 15 dpi, the accumulation of flavonoids were still significantly reduced upon CCYV infection, while lipids, amino acids, nucleotides and derivatives were remarkably enhanced. Most of significantly increased metabolites were lipids (lysophosphatidylethanolamine, LPE; lysophosphatidylcholine, LPC and their isomers). Also, the number of significantly changed metabolites increased with the infection period. However, only a few organic acids and phenolic acids showed difference between CCYV-infected and healthy cucumber plants. CONCLUSIONS CCYV infection repressed the defensive flavonoids, terpeneoids metabolism but triggered the lipids, amino acids and nucleotides metabolism with the inoculation period. This result suggests that CCYV-infection makes cucumber plants more susceptible for whiteflies attack and CCYV infection. The reduction of defensive comounds and the increase of amino acids may be partially responsible for enhancing feeding preference of whiteflies to CCYV-infected hosts. CCYV may hijacked lipid metabolism for virus replication and assembly.
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Affiliation(s)
- Zelong Zhang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Haifang He
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Minghui Yan
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Chenchen Zhao
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Caiyan Lei
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Jingjing Li
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Fengming Yan
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002 Henan China
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7
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Orfanidou C, Katsiani A, Papayiannis L, Katis NI, Maliogka VI. Interplay of Cucurbit Yellow Stunting Disorder Virus With Cucurbit Chlorotic Yellows Virus and Transmission Dynamics by Bemisia tabaci MED. PLANT DISEASE 2021; 105:416-424. [PMID: 32706325 DOI: 10.1094/pdis-03-20-0621-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cucurbit chlorotic yellows virus (CCYV) and cucurbit yellow stunting disorder virus (CYSDV) are two closely related criniviruses that often coinfect cucurbits and are associated with cucurbit yellows disease. Both viruses are distributed worldwide and are transmitted in a semipersistent manner by the whitefly vectors Bemisia tabaci MED or MEAM1. The major goal of this study was to provide insight into the interaction of CCYV and CYSDV in cucumber and to study the effect on transmission by B. tabaci MED. The titers of both viruses were estimated in single- and dually infected cucumber plants via reverse transcription PCR assays. In mixed infections, the accumulation of both viruses was significantly decreased. When B. tabaci MED adults were placed on cucumber infected with both viruses, their simultaneous transmission efficiency was significantly higher, whereas transmission efficiency of each individual virus was low. Moreover, nonviruliferous whiteflies preferentially settled on crinivirus-infected cucumber plants, whereas viruliferous whiteflies were attracted by healthy cucumber plants. Finally, the titer of both viruses was calculated in five commercial cucumber hybrids, followed by subsequent transmission experiments. Our results show that although the titers of CYSDV and CCYV were significantly lower in mixed infections in cucumbers, their simultaneous transmission increased.
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Affiliation(s)
- Chrysoula Orfanidou
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124 Thessaloniki, Greece
| | - Asimina Katsiani
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124 Thessaloniki, Greece
| | | | - Nikolaos I Katis
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124 Thessaloniki, Greece
| | - Varvara I Maliogka
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124 Thessaloniki, Greece
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8
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Kalischuk ML, Roberts PD, Paret ML. A rapid fluorescence-based real-time isothermal assay for the detection of Cucurbit yellow stunting disorder virus in squash and watermelon plants. Mol Cell Probes 2020; 53:101613. [PMID: 32504787 DOI: 10.1016/j.mcp.2020.101613] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/15/2020] [Accepted: 05/31/2020] [Indexed: 10/24/2022]
Abstract
Cucurbit yellow stunting disorder virus (CYSDV) is a single-stranded positive-sense RNA virus that produces devastating disease in watermelon and squash. Foliar symptoms of CYSDV consist of interveinal yellowing, brittleness, and thickening of older leaves leading to reduced plant vigor. A rapid diagnostic method for CYSDV would facilitate early detection and implementation of best viral-based management practices. We developed a rapid isothermal reverse transcription-recombination polymerase amplification (exo RT-RPA) assay for the detection of CYSDV. The primers and a 6-fluorescein amidite (6-FAM) probe were developed to target the nucleocapsid gene. The real-time assay detected CYSDV at 2.5 pg purified total RNA extracted from CYSDV-infected leaf tissue and corresponded to 10 copies of the target molecule. The assay was specific and did not cross-react with other common cucurbit viruses found in Florida and Georgia. The performance of the exo RT-RPA was evaluated using crude extract from 21 cucurbit field samples and demonstrated that the exo RT-RPA is a rapid procedure, thus providing a promising novel alternative approach for the detection of CYSDV.
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Affiliation(s)
- Melanie L Kalischuk
- University of Florida, Institute of Food and Agricultural Sciences (UF-IFAS), North Florida Research and Education Center, Quincy, FL, 32351, USA; University of Guelph, Department of Plant Agriculture, Guelph, Ontario, N1G 2W1, Canada.
| | - Pamela D Roberts
- UF-IFAS, Southwest Florida Research and Education Center, Immokalee, FL, 34142, USA; UF-IFAS, Plant Pathology Department, Gainesville, FL, 32611, USA
| | - Mathews L Paret
- University of Florida, Institute of Food and Agricultural Sciences (UF-IFAS), North Florida Research and Education Center, Quincy, FL, 32351, USA; UF-IFAS, Plant Pathology Department, Gainesville, FL, 32611, USA.
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9
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Natsuhara D, Takishita K, Tanaka K, Kage A, Suzuki R, Mizukami Y, Saka N, Nagai M, Shibata T. A Microfluidic Diagnostic Device Capable of Autonomous Sample Mixing and Dispensing for the Simultaneous Genetic Detection of Multiple Plant Viruses. MICROMACHINES 2020; 11:mi11060540. [PMID: 32466570 PMCID: PMC7344993 DOI: 10.3390/mi11060540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 01/08/2023]
Abstract
As an efficient approach to risk management in agriculture, the elimination of losses due to plant diseases and insect pests is one of the most important and urgent technological challenges for improving the crop yield. Therefore, we have developed a polydimethylsiloxane (PDMS)-based microfluidic device for the multiplex genetic diagnosis of plant diseases and pests. It offers unique features, such as rapid detection, portability, simplicity, and the low-cost genetic diagnosis of a wide variety of plant viruses. In this study, to realize such a diagnostic device, we developed a method for the autonomous dispensing of fluid into a microchamber array, which was integrated with a set of three passive stop valves with different burst pressures (referred to as phaseguides) to facilitate precise fluid handling. Additionally, we estimated the mixing efficiencies of several types of passive mixers (referred to as chaotic mixers), which were integrated into a microchannel, through experimental and computational analyses. We first demonstrated the ability of the fabricated diagnostic devices to detect DNA-based plant viruses from an infected tomato crop based on the loop-mediated isothermal amplification (LAMP) method. Moreover, we demonstrated the simultaneous detection of RNA-based plant viruses, which can infect cucurbits, by using the reverse transcription LAMP (RT-LAMP) method. The multiplex RT-LAMP assays revealed that multiple RNA viruses extracted from diseased cucumber leaves were successfully detected within 60 min, without any cross-contamination between reaction microchambers, on our diagnostic device.
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Affiliation(s)
- Daigo Natsuhara
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
- Correspondence: (D.N.); (T.S.)
| | - Keisuke Takishita
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Kisuke Tanaka
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Azusa Kage
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Ryoji Suzuki
- Agro-Environmental Division, Aichi Agricultural Research Center, Nagakute, Aichi 480-1193, Japan; (R.S.); (Y.M.); (N.S.)
| | - Yuko Mizukami
- Agro-Environmental Division, Aichi Agricultural Research Center, Nagakute, Aichi 480-1193, Japan; (R.S.); (Y.M.); (N.S.)
| | - Norikuni Saka
- Agro-Environmental Division, Aichi Agricultural Research Center, Nagakute, Aichi 480-1193, Japan; (R.S.); (Y.M.); (N.S.)
| | - Moeto Nagai
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Takayuki Shibata
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
- Correspondence: (D.N.); (T.S.)
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10
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Salavert F, Navarro JA, Owen CA, Khechmar S, Pallás V, Livieratos IC. Cucurbit chlorotic yellows virus p22 suppressor of RNA silencing binds single-, double-stranded long and short interfering RNA molecules in vitro. Virus Res 2020; 279:197887. [PMID: 32045630 DOI: 10.1016/j.virusres.2020.197887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 10/25/2022]
Abstract
Cucurbit chlorotic yellows virus (CCYV) is a new member of the genus Crinivirus (family Closteroviridae) with a bi-partite genome. CCYV RNA 1-encoded p22 has recently been reported to be a weak local suppressor of RNA silencing for which an interaction with cucumber SKP1LB1 through an F-box-like motif was demonstrated to be essential. Using a bacterially expressed maltose-binding protein (MBP) fusion of CCYV p22 in electrophoretic mobility shift assays (EMSA), we have examined in vitro its ability to bind different RNA templates. Our experiments showed that CCYV p22 is able to bind to ss and ds long RNAs, in addition to ss and ds small interfering (si) RNA molecules. CCYV p22 deletion mutants (MBP_CCYV DEL1-4) were produced that covered the entire protein, with MBP_CCYV DEL2 corresponding to the F-box motif and its flanking sequences. None of these deletions abolished the capacity of CCYV p22 to bind ss- and dsRNA molecules. However, deletions affecting the C-terminal half of the protein resulted in decreased binding efficiency for either ss- or dsRNA molecules indicating that essential elements for these interactions are located in this region. Taken together, our data add to current knowledge of the mode of action of suppressors of RNA silencing encoded by genes sited at the 3'-terminus of crinivirus genomic RNA 1, and shed light on the involvement of CCYV p22 in the suppression of RNA silencing and/or in another role in the virus life cycle via RNA binding.
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Affiliation(s)
- Ferran Salavert
- Department of Sustainable Agriculture, Mediterranean Agronomic Institute of Chania, Alsylio Agrokepion, GR-73100, Chania, Crete, Greece
| | - José Antonio Navarro
- Instituto De Biología Molecular y Celular De Plantas, Universidad Politécnica De Valencia-CSIC, Av. De Los Naranjos s/n, 46022, Valencia, Spain
| | - Carolyn A Owen
- Department of Sustainable Agriculture, Mediterranean Agronomic Institute of Chania, Alsylio Agrokepion, GR-73100, Chania, Crete, Greece
| | - Souheyla Khechmar
- Department of Sustainable Agriculture, Mediterranean Agronomic Institute of Chania, Alsylio Agrokepion, GR-73100, Chania, Crete, Greece
| | - Vicente Pallás
- Instituto De Biología Molecular y Celular De Plantas, Universidad Politécnica De Valencia-CSIC, Av. De Los Naranjos s/n, 46022, Valencia, Spain
| | - Ioannis C Livieratos
- Department of Sustainable Agriculture, Mediterranean Agronomic Institute of Chania, Alsylio Agrokepion, GR-73100, Chania, Crete, Greece.
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Rubio L, Galipienso L, Ferriol I. Detection of Plant Viruses and Disease Management: Relevance of Genetic Diversity and Evolution. FRONTIERS IN PLANT SCIENCE 2020; 11:1092. [PMID: 32765569 PMCID: PMC7380168 DOI: 10.3389/fpls.2020.01092] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/02/2020] [Indexed: 05/04/2023]
Abstract
Plant viruses cause considerable economic losses and are a threat for sustainable agriculture. The frequent emergence of new viral diseases is mainly due to international trade, climate change, and the ability of viruses for rapid evolution. Disease control is based on two strategies: i) immunization (genetic resistance obtained by plant breeding, plant transformation, cross-protection, or others), and ii) prophylaxis to restrain virus dispersion (using quarantine, certification, removal of infected plants, control of natural vectors, or other procedures). Disease management relies strongly on a fast and accurate identification of the causal agent. For known viruses, diagnosis consists in assigning a virus infecting a plant sample to a group of viruses sharing common characteristics, which is usually referred to as species. However, the specificity of diagnosis can also reach higher taxonomic levels, as genus or family, or lower levels, as strain or variant. Diagnostic procedures must be optimized for accuracy by detecting the maximum number of members within the group (sensitivity as the true positive rate) and distinguishing them from outgroup viruses (specificity as the true negative rate). This requires information on the genetic relationships within-group and with members of other groups. The influence of the genetic diversity of virus populations in diagnosis and disease management is well documented, but information on how to integrate the genetic diversity in the detection methods is still scarce. Here we review the techniques used for plant virus diagnosis and disease control, including characteristics such as accuracy, detection level, multiplexing, quantification, portability, and designability. The effect of genetic diversity and evolution of plant viruses in the design and performance of some detection and disease control techniques are also discussed. High-throughput or next-generation sequencing provides broad-spectrum and accurate identification of viruses enabling multiplex detection, quantification, and the discovery of new viruses. Likely, this technique will be the future standard in diagnostics as its cost will be dropping and becoming more affordable.
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Affiliation(s)
- Luis Rubio
- Centro de Protección Vegetal y Biotecnology, Instituto Valenciano de Investigaciones Agrarias, Moncada, Spain
- *Correspondence: Luis Rubio,
| | - Luis Galipienso
- Centro de Protección Vegetal y Biotecnology, Instituto Valenciano de Investigaciones Agrarias, Moncada, Spain
| | - Inmaculada Ferriol
- Plant Responses to Stress Programme, Centre for Research in Agricultural Genomics (CRAG-CSIC_UAB-UB) Cerdanyola del Vallès, Barcelona, Spain
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Orfanidou CG, Baltzi A, Dimou NA, Katis NI, Maliogka VI. Cucurbit chlorotic yellows virus: Insights Into Its Natural Host Range, Genetic Variability, and Transmission Parameters. PLANT DISEASE 2017; 101:2053-2058. [PMID: 30677385 DOI: 10.1094/pdis-02-17-0164-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cucurbit chlorotic yellows virus (CCYV) (genus Crinivirus, family Closteroviridae) is implicated in cucurbit yellows disease (CYV), causing typical interveinal yellowing symptoms in leaves, and is transmitted by Bemisia tabaci Mediterranean (MED) and Middle East-Asia Minor 1 (MEAM1). Due to its recent report in cucurbit crops in Greece, field surveys were conducted during 2011-2016 to determine the presence of the virus in symptomatic cucurbits and alternative hosts among arable weed species. Results indicated the restricted spread of the virus and identified 13 weed species as CCYV hosts for the first time. Sequence analysis of the RNA-dependent RNA polymerase (RNA1) coat and minor coat proteins (RNA2) revealed very low genetic diversity (<0.1%) among the Greek isolates. Transmission experiments were also conducted using B. tabaci MED with retention determined at four days, whereas transmission efficiency was positively correlated with the number of adults used, features linked to the virus semipersistent mode of transmission.
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Affiliation(s)
- C G Orfanidou
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124, Thessaloniki, Greece
| | - A Baltzi
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124, Thessaloniki, Greece
| | - N A Dimou
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124, Thessaloniki, Greece
| | - N I Katis
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124, Thessaloniki, Greece
| | - V I Maliogka
- Laboratory of Plant Pathology, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, 54124, Thessaloniki, Greece
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Charlermroj R, Makornwattana M, Himananto O, Seepiban C, Phuengwas S, Warin N, Gajanandana O, Karoonuthaisiri N. An accurate, specific, sensitive, high-throughput method based on a microsphere immunoassay for multiplex detection of three viruses and bacterial fruit blotch bacterium in cucurbits. J Virol Methods 2017; 247:6-14. [DOI: 10.1016/j.jviromet.2017.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 01/30/2017] [Accepted: 05/09/2017] [Indexed: 11/29/2022]
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14
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Li J, Liang X, Wang X, Shi Y, Gu Q, Kuo YW, Falk BW, Yan F. Direct evidence for the semipersistent transmission of Cucurbit chlorotic yellows virus by a whitefly vector. Sci Rep 2016; 6:36604. [PMID: 27812032 PMCID: PMC5095664 DOI: 10.1038/srep36604] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/17/2016] [Indexed: 02/03/2023] Open
Abstract
Cucurbit chlorotic yellows virus (CCYV) (genus Crinivirus, family Closteroviridae) is an emerging plant virus, and is now spreading and causing severe economic losses to cucurbit crops in many Asian countries. CCYV is believed to be transmitted specifically by the sweetpotato whitefly, Bemisia tabaci, in a semipersistent manner. In the present study, we provide direct evidence for the semipersistent transmission of CCYV by Mediterranean (MED) cryptic species of B. tabaci complex. We investigated CCYV transmission characteristics, and immunofluorescently labeled and localized the virus retention site within the vector by laser confocal microscopy. Whiteflies required ≥1 h of acquisition access period (AAP) to successfully acquire CCYV, and the proportion of RT-PCR positive whitefly individuals reached to 100% at 48 h of AAP. CCYV virons could be retained within vectors as long as 12 d, but the proportion of RT-PCR positive whiteflies dropped to 55% by 3 d. Groups of thirty whiteflies given a 24 h of inoculation access period (IAP) to inoculate CCYV on cucumber plants showed a transmission efficiency rate of 72.73%. The retention site of CCYV virons was located in the foregut of virion-fed vectors. These results definitely indicated the semipersistent transmission mode of CCYV by B. tabaci MED.
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Affiliation(s)
- Jingjing Li
- College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Xiangzhi Liang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Xueli Wang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Yan Shi
- College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Qinsheng Gu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China
| | - Yen-Wen Kuo
- Department of Plant Pathology, University of California, Davis, One shields Avenue, Davis, CA 95616-8600, USA
| | - Bryce W. Falk
- Department of Plant Pathology, University of California, Davis, One shields Avenue, Davis, CA 95616-8600, USA
| | - Fengming Yan
- College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan 450002, China
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Abrahamian PE, Abou-Jawdah Y. Whitefly-transmitted criniviruses of cucurbits: current status and future prospects. Virusdisease 2014; 25:26-38. [PMID: 24426308 PMCID: PMC3889241 DOI: 10.1007/s13337-013-0173-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 10/10/2013] [Indexed: 10/26/2022] Open
Abstract
In the past decade, crinviruses have gained interest due to their rapid widespread and destructive nature for cucurbit cultivation. Several members of the genus Crinivirus are considered emerging viruses. Currently, four criniviruses: Beet pseudo-yellows virus, Cucurbit chlorotic yellows virus, Cucurbit yellow stunting disorder virus and Lettuce infectious yellows virus have been reported to infect field- or greenhouse- grown cucurbits. Apart from their cucurbit hosts, criniviruses infect other cash crops and weeds. Criniviruses are exclusively transmitted by whiteflies. The virion titer and the vector genus or species complex are predominant factors affecting virus transmission. These criniviruses maintain genetic stability with limited intra-species variability. They share similar core genome structure and replication strategies with some variations in the non-core proteins and downstream replication processes. Management of the diseases induced by criniviruses relies on integrated disease management strategies and on resistant varieties, when available. This review will cover their epidemiology, molecular biology, detection and management.
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Affiliation(s)
- Peter E. Abrahamian
- Department of Agricultural Sciences, Faculty of Agricultural and Food Sciences, American University of Beirut, Beirut, 1107 2020 Lebanon
| | - Yusuf Abou-Jawdah
- Department of Agricultural Sciences, Faculty of Agricultural and Food Sciences, American University of Beirut, Beirut, 1107 2020 Lebanon
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