1
|
Zhang C, Guo M, Dong J, Liu L, Zhou X, Wu J. Visual and Super-Sensitive Detection of Maize Chlorotic Mottle Virus by Dot-ELISA and Au Nanoparticle-Based Immunochromatographic Test Strip. Viruses 2023; 15:1607. [PMID: 37515293 PMCID: PMC10383747 DOI: 10.3390/v15071607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Maize chlorotic mottle virus (MCMV) is the only species in the Mahromovirus genus and is often co-infected with one or several viruses of the Potyvirus genus, posing a great threat to the global maize industry. Effective viral integrated management measures are dependent on the timely and proper detection of the causal agent of the disease. In this work, six super-sensitive and specific monoclonal antibodies (mAbs) against MCMV were first prepared using purified MCMV virions as the immunogen. Then, the Dot enzyme-linked immunosorbent assay (Dot-ELISA) was established based on the obtained mAbs, and it can detect MCMV in infected maize leaf crude extracts diluted up to 1:10,240-fold (w/v, g/mL). Furthermore, a rapid and user-friendly Au nanoparticle-based immunochromatographic test strip (AuNP-ICTS) based on paired mAbs 7B12 and 17C4 was created for monitoring MCMV in point-of-care tests, and it can detect the virus in a 25,600-fold dilution (w/v, g/mL) of MCMV-infected maize leaf crude extracts. The whole test process for ICTS was completed in 10 min. Compared with conventional reverse transcription-polymerase chain reaction (RT-PCR), the detection endpoint of both serological methods is higher than that of RT-PCR, especially the Dot-ELISA, which is 12.1 times more sensitive than that of RT-PCR. In addition, the detection results of 20 blinded maize samples by the two serological assays were consistent with those of RT-PCR. Therefore, the newly created Dot-ELISA and AuNP-ICTS exhibit favorable application potential for the detection of MCMV in plant samples.
Collapse
Affiliation(s)
- Cui Zhang
- State Key Laboratory of Rice Biology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Mengmeng Guo
- State Key Laboratory of Rice Biology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jinxi Dong
- State Key Laboratory of Rice Biology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
- Hainan Institute, Zhejiang University, Sanya 572025, China
| | - Li Liu
- The Department of Applied Engineering, Zhejiang Economic and Trade Polytechnic, Hangzhou 310018, China
| | - Xueping Zhou
- State Key Laboratory of Rice Biology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jianxiang Wu
- State Key Laboratory of Rice Biology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
- Hainan Institute, Zhejiang University, Sanya 572025, China
| |
Collapse
|
2
|
Lei R, Kuang R, Peng X, Jiao Z, Zhao Z, Cong H, Fan Z, Zhang Y. Portable rapid detection of maize chlorotic mottle virus using RT-RAA/CRISPR-Cas12a based lateral flow assay. FRONTIERS IN PLANT SCIENCE 2023; 14:1088544. [PMID: 36938014 PMCID: PMC10021709 DOI: 10.3389/fpls.2023.1088544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Maize lethal necrosis seriously threatens maize production worldwide, which was caused by coinfection by maize chlorotic mottle virus (MCMV) and a potyvirid. To effectively control maize lethal necrosis, it is vital to develop a rapid, sensitive, and specific detection method for the early diagnosis of MCMV in host plant tissues. METHODS We established a rapid detection procedure by combining the one-step reverse-transcription recombinase-aided amplification (one-step RT-RAA) and CRISPR/Cas12a-based lateral flow assay in one tube (one-tube one-step RT-RAA/CRISPR-Cas12a), which can be implemented on a portable metal incubator at 37~42°C. Furthermore, the crude extract of total RNA from plant materials using alkaline-PEG buffer can be directly used as the template for one-step RT-RAA. RESULTS The developed one-tube one-step RT-RAA/CRISPR-Cas12a lateral flow assay can detect as low as 2.5 copies of the coat protein (CP) gene of MCMV and 0.96 pg of the total RNA extracted from MCMV infected maize leaves. Furthermore, the MCMV infected maize leaves at 5 dpi having no obvious symptoms was detected as weak positive. DISCUSSION The crude extraction method of total RNA from plant materials required no complicated device, and all the procedures could be implemented at room temperature and on a portable metal incubator, costing a total time of about 1h. The one-step RT-RAA reagents and CRISPR/Cas12a reagents can be lyophilized for easy storage and transportation of reagents, which makes this method more feasible for the filed detection. This method presents rapidness, robustness and on-site features in detecting viral RNA, and is a promising tool for the field application in minimally equipped laboratories.
Collapse
Affiliation(s)
- Rong Lei
- Institute of Plant Inspection and Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Ruirui Kuang
- Institute of Plant Inspection and Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
- State Key Laboratory of Agro-biotechnology and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xuanzi Peng
- Institute of Plant Inspection and Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Zhiyuan Jiao
- State Key Laboratory of Agro-biotechnology and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhenxing Zhao
- Institute of Plant Inspection and Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Haolong Cong
- Institute of Plant Inspection and Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Zaifeng Fan
- State Key Laboratory of Agro-biotechnology and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
| | - Yongjiang Zhang
- Institute of Plant Inspection and Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| |
Collapse
|
3
|
Patel P, Kumari N, Sharma PN. RT-PCR based detection of Pepper mild mottle virus from capsicum seeds and seed transmission assay. Virusdisease 2023; 34:50-55. [PMID: 37009258 PMCID: PMC10050496 DOI: 10.1007/s13337-023-00807-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 01/02/2023] [Indexed: 02/11/2023] Open
Abstract
Pepper mild mottle virus (PMMoV), a Tobamovirus from Virgaviridae family, is highly contagious and transmitted by seeds as well as soil in nature. PMMoV has become a greater threat to capsicum cultivation worldwide. To develop an indigenous, rapid, and sensitive protocol for routine detection of PMMoV from seeds, the sensitivity of DAS-ELISA and RT-PCR was compared in the present study. The infected seeds of California Wonder were included in the study. Through DAS-ELISA the virus was successfully detected from 20 mg of seeds. However, using RT-PCR, we were able to detect the virus even from one infected seed with reproducibility. In the present study, vertical seed transmission of the test virus was investigated by employing a grow-out test under greenhouse conditions as well as directly through RT-PCR omitting the grow-out test in three capsicum cultivars. Based on symptoms observations in grow out test, seed transmission was observed in the 3 capsicum cultivars viz., California Wonder (63.04%), Yolo Wonder (33.80%) and Doux des LAndes (33.30%). Through RT-PCR it was estimated to be 55.56% (California Wonder), 28.96% (Yolo Wonder), and 40.64% (Doux des Landes), respectively. Thus, indicating 100% seed-to-seedling PMMoV transmission and reliability of RT-PCR in direct PMMoV detection from seeds. Even a small percentage of infected seed has the potential to greatly increase the PMMoV inoculum in the field and result in 100% plant infection. Therefore, we suggest using the established procedure for PMMoV detection right from the seed. Supplementary Information The online version contains supplementary material available at 10.1007/s13337-023-00807-0.
Collapse
Affiliation(s)
- Priyankaben Patel
- Department of Plant Pathology, CSK HPKV, Palampur, Himachal Pradesh 176062 India
| | - Nidhi Kumari
- Department of Plant Pathology, CSK HPKV, Palampur, Himachal Pradesh 176062 India
- Division of Crop Protection, ICAR-Central Institute for Subtropical Horticulture, Rehmankhera, Lucknow, 226101 India
| | - P. N. Sharma
- Department of Plant Pathology, CSK HPKV, Palampur, Himachal Pradesh 176062 India
- University Institute of Agricultural Sciences, Chandigarh University, Gharuan, 140413 India
| |
Collapse
|
4
|
Bernardo P, Barriball K, Frey TS, Meulia T, Wangai A, Suresh LM, Heuchelin S, Paul PA, Redinbaugh MG, Ohlson EW. Transmission, localization, and infectivity of seedborne maize chlorotic mottle virus. PLoS One 2023; 18:e0281484. [PMID: 36745639 PMCID: PMC9901749 DOI: 10.1371/journal.pone.0281484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/24/2023] [Indexed: 02/07/2023] Open
Abstract
Maize lethal necrosis is a destructive virus disease of maize caused by maize chlorotic mottle virus (MCMV) in combination with a virus in the family Potyviridae. Emergence of MLN is typically associated with the introduction of MCMV or its vectors and understanding its spread through seed is critical for disease management. Previous studies suggest that although MCMV is detected on seed, the seed transmission rate of this virus is low. However, mechanisms influencing its transmission are poorly understood. Elucidating these mechanisms is crucial for informing strategies to prevent spread on contaminated seed. In this study, we evaluated the rate of MCMV seed transmission using seed collected from plants that were artificially inoculated with MCMV isolates from Hawaii and Kenya. Grow-out tests indicated that MCMV transmission through seed was rare, with a rate of 0.004% among the more than 85,000 seed evaluated, despite detection of MCMV at high levels in the seed lots. To understand factors that limit transmission from seed, MCMV distribution in seed tissues was examined using serology and immunolocalization. The virus was present at high levels in maternal tissues, the pericarp and pedicel, but absent from filial endosperm and embryo seed tissues. The ability to transmit MCMV from seed to uninfected plants was tested to evaluate virus viability. Transmission was negatively associated with both seed maturity and moisture content. Transmission of MCMV from infested seed dried to less than 15% moisture was not detected, suggesting proper handling could be important for minimizing spread of MCMV through seed.
Collapse
Affiliation(s)
- Pauline Bernardo
- Department of Plant Pathology, The Ohio State University, Wooster, OH, United States of America
| | - Kelly Barriball
- Corn, Soybean, and Wheat Quality Research Unit, United States Department of Agriculture–Agricultural Research Service (USDA-ARS), Wooster, OH, United States of America
| | - Timothy S. Frey
- Department of Plant Pathology, The Ohio State University, Wooster, OH, United States of America
| | - Tea Meulia
- Molecular and Cellular Imaging Center, Ohio Agricultural Research and Development Center, Wooster, OH, United States of America
| | - Anne Wangai
- Kenya Agricultural and Livestock Research Organization (KALRO), NARL, Nairobi, Kenya
| | - L. M. Suresh
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF, Gigiri, Nairobi, Kenya
| | | | - Pierce A. Paul
- Department of Plant Pathology, The Ohio State University, Wooster, OH, United States of America
| | - Margaret G. Redinbaugh
- Department of Plant Pathology, The Ohio State University, Wooster, OH, United States of America
- Corn, Soybean, and Wheat Quality Research Unit, United States Department of Agriculture–Agricultural Research Service (USDA-ARS), Wooster, OH, United States of America
- * E-mail: (MGR); (EWO)
| | - Erik W. Ohlson
- Corn, Soybean, and Wheat Quality Research Unit, United States Department of Agriculture–Agricultural Research Service (USDA-ARS), Wooster, OH, United States of America
- * E-mail: (MGR); (EWO)
| |
Collapse
|
5
|
Biswal AK, Alakonya AE, Mottaleb KA, Hearne SJ, Sonder K, Molnar TL, Jones AM, Pixley KV, Prasanna BM. Maize Lethal Necrosis disease: review of molecular and genetic resistance mechanisms, socio-economic impacts, and mitigation strategies in sub-Saharan Africa. BMC PLANT BIOLOGY 2022; 22:542. [PMID: 36418954 PMCID: PMC9686106 DOI: 10.1186/s12870-022-03932-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Maize lethal necrosis (MLN) disease is a significant constraint for maize producers in sub-Saharan Africa (SSA). The disease decimates the maize crop, in some cases, causing total crop failure with far-reaching impacts on regional food security. RESULTS In this review, we analyze the impacts of MLN in Africa, finding that resource-poor farmers and consumers are the most vulnerable populations. We examine the molecular mechanism of MLN virus transmission, role of vectors and host plant resistance identifying a range of potential opportunities for genetic and phytosanitary interventions to control MLN. We discuss the likely exacerbating effects of climate change on the MLN menace and describe a sobering example of negative genetic association between tolerance to heat/drought and susceptibility to viral infection. We also review role of microRNAs in host plant response to MLN causing viruses as well as heat/drought stress that can be carefully engineered to develop resistant varieties using novel molecular techniques. CONCLUSIONS With the dual drivers of increased crop loss due to MLN and increased demand of maize for food, the development and deployment of simple and safe technologies, like resistant cultivars developed through accelerated breeding or emerging gene editing technologies, will have substantial positive impact on livelihoods in the region. We have summarized the available genetic resources and identified a few large-effect QTLs that can be further exploited to accelerate conversion of existing farmer-preferred varieties into resistant cultivars.
Collapse
Affiliation(s)
- Akshaya Kumar Biswal
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico.
| | - Amos Emitati Alakonya
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Khondokar Abdul Mottaleb
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Sarah J Hearne
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Kai Sonder
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | | | - Alan M Jones
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Kevin Vail Pixley
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | | |
Collapse
|
6
|
Zhang C, Wang D, Li W, Zhang B, Abdel-Fattah Ouf GM, Su X, Li J. The coat protein p25 from maize chlorotic mottle virus involved in symptom development and systemic movement of tobacco mosaic virus hybrids. Front Microbiol 2022; 13:951479. [PMID: 35992724 PMCID: PMC9389212 DOI: 10.3389/fmicb.2022.951479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
Viral coat protein (CP) has numerous critical functions in plant infection, but little is known about p25, the CP of maize chlorotic mottle virus (MCMV; Machlomovirus), which causes severe yield losses in maize worldwide. Here, we investigated the roles of p25 in pathogenicity and systemic movement, as well as potential interactions with host plants, using a hybrid tobacco mosaic virus (TMV)-based expression system. Highly conserved protein p25 is predicted to contain a membrane-anchored nuclear localization signal (NLS) sequence and an extracellular sequence. In transgenic Nicotiana benthamiana plants containing the movement protein (MP) of TMV (TMV-MP), p25 induced severe symptoms, including dwarf and foliar necrosis, and was detected in inoculated and non-inoculated leaves. After the deletion of NLS from nuclear-located p25, the protein was found throughout the host cell, and plant stunting and starch granule deformity were reduced. Systemic movement and pathogenicity were significantly impaired when the C-terminal regions of p25 were absent. Using virus-induced gene silencing (VIGS), the transcript level of heat shock protein HSP90 was distinctly lower in host plants in association with the absence of leaf necrosis induced by TMV-p25. Our results revealed crucial roles for MCMV p25 in viral pathogenicity, long-distance movement, and interactions with N. benthamiana.
Collapse
Affiliation(s)
- Chao Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Life Sciences, Hebei Agricultural University, Baoding, China
| | - Di Wang
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Weimin Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Baolong Zhang
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Gamal M. Abdel-Fattah Ouf
- Department of Botany and Applied Microbiology, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Xiaofeng Su
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jun Li
- State Key Laboratory of North China Crop Improvement and Regulation, College of Life Sciences, Hebei Agricultural University, Baoding, China
| |
Collapse
|
7
|
Duan X, Ma W, Jiao Z, Tian Y, Ismail RG, Zhou T, Fan Z. Reverse transcription-recombinase-aided amplification and CRISPR/Cas12a-based visual detection of maize chlorotic mottle virus. PHYTOPATHOLOGY RESEARCH 2022; 4:23. [PMID: 35757182 PMCID: PMC9207886 DOI: 10.1186/s42483-022-00128-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Maize chlorotic mottle virus (MCMV) is one of the important quarantine pathogens in China. It often co-infects with one or two viruses in the family Potyviridae and causes maize lethal necrosis disease. Therefore, an accurate and sensitive method for the detection of MCMV is urgently needed. Combined with reverse transcription and recombinase-aided amplification, we developed a CRISPR/Cas12a-based visual nucleic acid detection system targeting the MCMV coat protein gene. The whole process can be completed within 45 min with high sensitivity. This system could detect cDNAs diluted up to 10-5 when 2000 ng of total RNA was used for reverse transcription. The Cas12a/crRNA complex designed for MCMV detection could recognize and cleave the targeted double-stranded DNA, and ultimately cleave the single-stranded DNA probes and produce fluorescent signals. The green fluorescence produced under blue light (440-460 nm) in this procedure could be observed by the naked eye. Since this novel method is specific, rapid, sensitive and does not require special instruments and technical expertise, it should be suitable for on-site visual detection of MCMV in seeds, plants of maize and potentially in its insect vectors.
Collapse
Affiliation(s)
- Xueyan Duan
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
- Sanya Institute of China Agricultural University, Building 8, Yongyou Industrial Park, Yazhou Bay Science and Technology City, Yazhou District, Sanya, 572025 Hainan China
| | - Wendi Ma
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
| | - Zhiyuan Jiao
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
- Sanya Institute of China Agricultural University, Building 8, Yongyou Industrial Park, Yazhou Bay Science and Technology City, Yazhou District, Sanya, 572025 Hainan China
| | - Yiying Tian
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
- Sanya Institute of China Agricultural University, Building 8, Yongyou Industrial Park, Yazhou Bay Science and Technology City, Yazhou District, Sanya, 572025 Hainan China
| | - Ragab Gomaa Ismail
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
- Department of Plant Pathology, College of Agriculture, Alexandria University, El-Shatby, Alexandria, 21545 Egypt
| | - Tao Zhou
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
- Sanya Institute of China Agricultural University, Building 8, Yongyou Industrial Park, Yazhou Bay Science and Technology City, Yazhou District, Sanya, 572025 Hainan China
| | - Zaifeng Fan
- State Key Laboratory of Agrobiotechnology, MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, 100193 China
- Sanya Institute of China Agricultural University, Building 8, Yongyou Industrial Park, Yazhou Bay Science and Technology City, Yazhou District, Sanya, 572025 Hainan China
| |
Collapse
|
8
|
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.
Collapse
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.
| |
Collapse
|
9
|
Li X, Li Y, Hu W, Li Y, Li Y, Chen S, Wang J. Simultaneous multiplex RT-PCR detection of four viruses associated with maize lethal necrosis disease. J Virol Methods 2021; 298:114286. [PMID: 34520808 DOI: 10.1016/j.jviromet.2021.114286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 04/28/2021] [Accepted: 09/08/2021] [Indexed: 11/19/2022]
Abstract
Maize lethal necrosis disease (MLND) is a serious disease of worldwide importance. It is caused by the co-infection of maize with maize chlorotic mottle virus (MCMV) and a potyvirus, such as sugarcane mosaic virus (SCMV), that acts synergistically to produce more severe symptoms and production losses. More recently, maize yellow mosaic virus (MaYMV) and maize-associated totivirus (MATV) were found to co-infect with MCMV and SCMV in maize plants. To facilitate the detection of these viruses in co-infected maize, a multiplex RT-PCR assay was developed in this study. The assay used five specific primer pairs and simultaneously amplified these four viruses as well as the elongation factor 1α (EF 1α) gene use as internal control in one tube. The concentration of the primers, annealing temperature, annealing time, extension time and amplification cycles were optimized for the multiplex RT-PCR. The detection limit of the assay was up to 100 pg of total cDNA template. This multiplex RT-PCR assay was shown to be a sensitive and effective tool for the screening of field samples for the presence of these viruses in co-infected maize.
Collapse
Affiliation(s)
- Xiaoqin Li
- School of Life Science, Biocontrol Engineering Research Center of Crop Disease & Pest, Yunnan Province, Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650091, China
| | - Yu Li
- School of Life Science, Biocontrol Engineering Research Center of Crop Disease & Pest, Yunnan Province, Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650091, China
| | - Wenli Hu
- School of Life Science, Biocontrol Engineering Research Center of Crop Disease & Pest, Yunnan Province, Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650091, China
| | - Yingjuan Li
- School of Life Science, Biocontrol Engineering Research Center of Crop Disease & Pest, Yunnan Province, Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650091, China
| | - Yan Li
- Yunnan Plant Protection and Quarantine Station, Kunming 650034, China
| | - Suiyun Chen
- School of Life Science, Biocontrol Engineering Research Center of Crop Disease & Pest, Yunnan Province, Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650091, China.
| | - Jianguang Wang
- School of Life Science, Biocontrol Engineering Research Center of Crop Disease & Pest, Yunnan Province, Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650091, China.
| |
Collapse
|
10
|
Gao X, Chen Y, Luo X, Du Z, Hao K, An M, Xia Z, Wu Y. Recombinase Polymerase Amplification Assay for Simultaneous Detection of Maize Chlorotic Mottle Virus and Sugarcane Mosaic Virus in Maize. ACS OMEGA 2021; 6:18008-18013. [PMID: 34308035 PMCID: PMC8295995 DOI: 10.1021/acsomega.1c01767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/30/2021] [Indexed: 05/02/2023]
Abstract
Maize chlorotic mottle virus (MCMV) can cause maize lethal necrosis (MLN) when coinfected with potyvirids, such as sugarcane mosaic virus (SCMV), maize dwarf mosaic virus, or wheat streak mosaic virus. MLN is often caused by coinfection of MCMV and SCMV, which has been reported in China and several countries of Africa. In this study, a recombinase polymerase amplification (RPA) assay was established for simultaneous detection of MCMV and SCMV in maize. The RPA assay can be completed within 30 min at 38 °C. The primers for the RPA assay were specific since no crossreaction was detected with other selected viruses that infected maize in China. The detection limit of the RPA method was 102 copies μL-1, which was about 10-fold more sensitive than that of the conventional PCR method. Moreover, the RPA assay can be successfully applied to detect maize samples collected in the field. These results demonstrated that the established RPA assay is a rapid and efficient method to conduct simultaneous detection of MCMV and SCMV, which provides an alternative technology for MLN diagnosis.
Collapse
|
11
|
Bernardo P, Frey TS, Barriball K, Paul PA, Willie K, Mezzalama M, Kimani E, Mugambi C, Wangai A, Prasanna BM, Redinbaugh MG. Detection of Diverse Maize Chlorotic Mottle Virus Isolates in Maize Seed. PLANT DISEASE 2021; 105:1596-1601. [PMID: 33320046 DOI: 10.1094/pdis-07-20-1446-sr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Maize chlorotic mottle virus (MCMV) has driven the emergence of maize lethal necrosis worldwide, where it threatens maize production in areas of East Africa, South America, and Asia. It is thought that MCMV transmission through seed may be important for introduction of the virus in new regions. Identification of infested seed lots is critical for preventing the spread of MCMV through seed. Although methods for detecting MCMV in leaf tissue are available, diagnostic methods for its detection in seed lots are lacking. In this study, ELISA, RT-PCR, and RT-qPCR were adapted for detection of MCMV in maize seed. Purified virions of MCMV isolates from Kansas, Mexico, and Kenya were then used to determine the virus detection thresholds for each diagnostic assay. No substantial differences in response were detected among the isolates in any of the three assays. The RT-PCR and a SYBR Green-based RT-qPCR assays were >3,000 times more sensitive than commercial ELISA for MCMV detection. For ELISA using seed extracts, selection of positive and negative controls was critical, most likely because of relatively high backgrounds. Use of seed soak solutions in ELISA detected MCMV with similar sensitivity to seed extracts, produced minimal background, and required substantially less labor. ELISA and RT-PCR were both effective for detecting MCMV in seed lots from Hawaii and Kenya, with ELISA providing a reliable and inexpensive diagnostic assay that could be implemented routinely in seed testing facilities.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
Collapse
Affiliation(s)
- Pauline Bernardo
- Department of Plant Pathology, The Ohio State University, Wooster, OH 44691, U.S.A
| | - Timothy S Frey
- Department of Plant Pathology, The Ohio State University, Wooster, OH 44691, U.S.A
| | - Kelly Barriball
- Corn, Soybean, and Wheat Quality Research Unit, United States Department of Agriculture-Agricultural Research Service, Wooster, OH 44691, U.S.A
| | - Pierce A Paul
- Department of Plant Pathology, The Ohio State University, Wooster, OH 44691, U.S.A
| | - Kristen Willie
- Corn, Soybean, and Wheat Quality Research Unit, United States Department of Agriculture-Agricultural Research Service, Wooster, OH 44691, U.S.A
| | - Monica Mezzalama
- International Maize and Wheat Improvement Center, Nairobi, Kenya
| | - Esther Kimani
- Kenya Agricultural and Livestock Research Organization, Nairobi, Kenya
| | - Cyrus Mugambi
- Kenya Agricultural and Livestock Research Organization, Nairobi, Kenya
| | - Anne Wangai
- International Maize and Wheat Improvement Center, Nairobi, Kenya
- Kenya Agricultural and Livestock Research Organization, Nairobi, Kenya
| | | | - Margaret G Redinbaugh
- Department of Plant Pathology, The Ohio State University, Wooster, OH 44691, U.S.A
- Corn, Soybean, and Wheat Quality Research Unit, United States Department of Agriculture-Agricultural Research Service, Wooster, OH 44691, U.S.A
| |
Collapse
|
12
|
De Groote H, Munyua BG, Palmas S, Suresh LM, Bruce AY, Kimenju S. Using Panel Community Surveys to Track the Impact of Crop Pests Over Time and Space - The Case of Maize Lethal Necrosis (MLN) Disease in Kenya from 2013 to 2018. PLANT DISEASE 2021; 105:1259-1271. [PMID: 33289406 DOI: 10.1094/pdis-08-20-1730-sr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Maize lethal necrosis (MLN) disease appeared in Kenya in 2011, causing major damage. In a first survey of 121 communities in 2013, participants estimated the proportion of households affected and the yield loss in affected areas; from this survey, the overall loss was estimated at 22%, concentrated in western Kenya (94%). Efforts to combat the disease included planting resistant varieties, creating awareness of MLN management, and producing pathogen-free seed. In 2018, the same communities were revisited and asked the same questions, establishing a panel community survey. The results showed that incidents of MLN had greatly decreased, and the number of communities that had observed it had reduced from 76% in 2013 to 26% by the long rains of 2018; while still common in western Kenya (60%), MLN had greatly reduced elsewhere (to 10%). In 2013, 40% of farmers were affected, yield loss among affected farmers was estimated at 44%, and total yield loss was estimated at 22% (a production loss of 0.5 million metric tons/year), valued at US$187 million. By the long rains of 2018, 23% of farmers were affected, with a loss among affected farmers of 36%; overall annual loss was estimated at 8.5% or 0.37 million metric tons, valued at US$109 million, concentrated in western Kenya (79%). Of the recommended control measures, only the removal of diseased plants was commonly used (by 62% of affected communities), but not the use of agronomic practices (11%) or resistant varieties (9.5%). The reasons for the reduction in MLN are not well understood; external factors such as spraying insecticide against fall armyworm and unfavorable weather likely played a role, as did using disease-free seed, but not the use of resistant varieties or appropriate management practices. Still, as the pathogen remains in the fields, it is important to keep disseminating these control methods, particularly resistant varieties.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
Collapse
Affiliation(s)
- Hugo De Groote
- International Maize and Wheat Improvement Centre (CIMMYT), PO Box 2041-00621, Nairobi, Kenya
| | - Bernard G Munyua
- International Maize and Wheat Improvement Centre (CIMMYT), PO Box 2041-00621, Nairobi, Kenya
| | - Sebastian Palmas
- International Maize and Wheat Improvement Centre (CIMMYT), PO Box 2041-00621, Nairobi, Kenya
| | - L M Suresh
- International Maize and Wheat Improvement Centre (CIMMYT), PO Box 2041-00621, Nairobi, Kenya
| | - Anani Y Bruce
- International Maize and Wheat Improvement Centre (CIMMYT), PO Box 2041-00621, Nairobi, Kenya
| | | |
Collapse
|
13
|
Jiao Y, Jiang J, An M, Xia Z, Wu Y. Recombinase polymerase amplification assay for rapid detection of maize chlorotic mottle virus in maize. Arch Virol 2019; 164:2581-2584. [PMID: 31359148 DOI: 10.1007/s00705-019-04361-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 07/01/2019] [Indexed: 11/25/2022]
Abstract
Maize chlorotic mottle virus (MCMV), an important quarantine virus, causes lethal necrosis in maize when coinfected with a potyvirid, which is seriously threatening the production of maize worldwide. In this study, recombinase polymerase amplification (RPA), a novel isothermal DNA amplification and detection technique, was developed to detect MCMV in maize crops. A pair of specific primers was designed based on the conserved sequences of the MCMV coat protein region. The RT-RPA assay was carried out as an isothermal reaction at 38 °C that was complete within 30 min, and no cross-reactivity was detected with other viruses infecting maize in China. The limit of detection of the RT-RPA assay was tenfold lower than that of ordinary RT-PCR. Moreover, this method was successfully applied to test field-collected samples. The newly developed RT-RPA assay offers a reliable, sensitive and efficient method for rapid detection of MCMV in maize in equipment-limited diagnostic laboratories and on-site facilities.
Collapse
Affiliation(s)
- Yubing Jiao
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - Junyun Jiang
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - Mengnan An
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - Zihao Xia
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Yuanhua Wu
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China.
| |
Collapse
|
14
|
Cao N, Zhan B, Zhou X. Nitric Oxide as a Downstream Signaling Molecule in Brassinosteroid-Mediated Virus Susceptibility to Maize Chlorotic Mottle Virus in Maize. Viruses 2019; 11:v11040368. [PMID: 31013593 PMCID: PMC6521138 DOI: 10.3390/v11040368] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/13/2019] [Accepted: 04/19/2019] [Indexed: 12/16/2022] Open
Abstract
Maize chlorotic mottle virus (MCMV) infection causes growth abnormalities in maize. Transcriptome sequencing was conducted to compare the global gene expression of MCMV-inoculated plants with that of mock-inoculated plants. Data analyses showed that brassinosteroid (BR)-associated genes were upregulated after MCMV infection. Exogenous 2,4-epibrassinolide (BL) or brassinazole (BRZ) applications indicated that BR pathway was involved in the susceptibility to MCMV infection. In addition, treatment of BL on maize induced the accumulation of nitric oxide (NO), and the changes of NO content played positive roles in the disease incidence of MCMV. Moreover, MCMV infection was delayed when the BL-treated plants were applied with NO scavenger, which suggested that BR induced the susceptibility of maize to MCMV infection in a NO-dependent manner. Further investigation showed the maize plants with knock-down of DWARF4 (ZmDWF4, a key gene of BR synthesis) and nitrate reductase (ZmNR, a key gene of NO synthesis) by virus-induced gene silencing displayed higher resistance to MCMV than control plants. Taken together, our results suggest that BR pathway promotes the susceptibility of maize to MCMV in a NO-dependent manner.
Collapse
Affiliation(s)
- Ning Cao
- State Key Laboratory for Biology of Plant Disease and Insect Pest, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Binhui Zhan
- State Key Laboratory for Biology of Plant Disease and Insect Pest, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Xueping Zhou
- State Key Laboratory for Biology of Plant Disease and Insect Pest, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
- State Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
15
|
Wei S, Daliri EB, Chelliah R, Park B, Lim J, Baek M, Nam Y, Seo K, Jin Y, Oh D. Development of a multiplex real‐time PCR for simultaneous detection of
Bacillus cereus
,
Listeria monocytogenes
, and
Staphylococcus aureus
in food samples. J Food Saf 2018. [DOI: 10.1111/jfs.12558] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shuai Wei
- Department of Food Science and Biotechnology, School of Bioconvergence Science and TechnologyKangwon National University Chuncheon Gangwon Republic of Korea
| | - Eric Banan‐Mwine Daliri
- Department of Food Science and Biotechnology, School of Bioconvergence Science and TechnologyKangwon National University Chuncheon Gangwon Republic of Korea
| | - Ramachandran Chelliah
- Department of Food Science and Biotechnology, School of Bioconvergence Science and TechnologyKangwon National University Chuncheon Gangwon Republic of Korea
| | - Byung‐Jae Park
- Department of Food Science and Biotechnology, School of Bioconvergence Science and TechnologyKangwon National University Chuncheon Gangwon Republic of Korea
| | - Ji‐Su Lim
- KogeneBiotech Co., Ltd. Seoul Republic of Korea
| | - Myo‐Ah Baek
- KogeneBiotech Co., Ltd. Seoul Republic of Korea
| | | | - Kun‐Ho Seo
- KU Center for Food Safety, College of Veterinary MedicineKonkuk University Seoul Republic of Korea
| | - Yong‐Guo Jin
- National Research and Development Center for Egg ProcessingCollege of Food Science and Technology, Huazhong Agricultural University Wuhan Hubei People's Republic of China
| | - Deog‐Hwan Oh
- Department of Food Science and Biotechnology, School of Bioconvergence Science and TechnologyKangwon National University Chuncheon Gangwon Republic of Korea
| |
Collapse
|
16
|
Abstract
Maize lethal necrosis (MLN) is a disease of maize caused by coinfection of maize with maize chlorotic mottle virus (MCMV) and one of several viruses from the Potyviridae, such as sugarcane mosaic virus, maize dwarf mosaic virus, Johnsongrass mosaic virus or wheat streak mosaic virus. The coinfecting viruses act synergistically to result in frequent plant death or severely reduce or negligible yield. Over the past eight years, MLN has emerged in sub-Saharan East Africa, Southeast Asia, and South America, with large impacts on smallholder farmers. Factors associated with MLN emergence include multiple maize crops per year, the presence of maize thrips ( Frankliniella williamsi), and highly susceptible maize crops. Soil and seed transmission of MCMV may also play significant roles in development and perpetuation of MLN epidemics. Containment and control of MLN will likely require a multipronged approach, and more research is needed to identify and develop the best measures.
Collapse
Affiliation(s)
- Margaret G Redinbaugh
- Department of Plant Pathology, Ohio State University, Wooster, Ohio 44691, USA; .,United States Department of Agriculture, Agricultural Research Service, Wooster, Ohio 44691, USA;
| | - Lucy R Stewart
- Department of Plant Pathology, Ohio State University, Wooster, Ohio 44691, USA; .,United States Department of Agriculture, Agricultural Research Service, Wooster, Ohio 44691, USA;
| |
Collapse
|
17
|
Gowda M, Beyene Y, Makumbi D, Semagn K, Olsen MS, Bright JM, Das B, Mugo S, Suresh LM, Prasanna BM. Discovery and validation of genomic regions associated with resistance to maize lethal necrosis in four biparental populations. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2018; 38:66. [PMID: 29773962 PMCID: PMC5945787 DOI: 10.1007/s11032-018-0829-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/24/2018] [Indexed: 05/21/2023]
Abstract
In sub-Saharan Africa, maize is the key determinant of food security for smallholder farmers. The sudden outbreak of maize lethal necrosis (MLN) disease is seriously threatening the maize production in the region. Understanding the genetic basis of MLN resistance is crucial. In this study, we used four biparental populations applied linkage mapping and joint linkage mapping approaches to identify and validate the MLN resistance-associated genomic regions. All populations were genotyped with low to high density markers and phenotyped in multiple environments against MLN under artificial inoculation. Phenotypic variation for MLN resistance was significant and heritability was moderate to high in all four populations for both early and late stages of disease infection. Linkage mapping revealed three major quantitative trait loci (QTL) on chromosomes 3, 6, and 9 that were consistently detected in at least two of the four populations. Phenotypic variance explained by a single QTL in each population ranged from 3.9% in population 1 to 43.8% in population 2. Joint linkage association mapping across three populations with three biometric models together revealed 16 and 10 main effect QTL for MLN-early and MLN-late, respectively. The QTL identified on chromosomes 3, 5, 6, and 9 were consistent with the QTL identified by linkage mapping. Ridge regression best linear unbiased prediction with five-fold cross-validation revealed high accuracy for prediction across populations for both MLN-early and MLN-late. Overall, the study discovered and validated the presence of major effect QTL on chromosomes 3, 6, and 9 which can be potential candidates for marker-assisted breeding to improve the MLN resistance.
Collapse
Affiliation(s)
- Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Kassa Semagn
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Michael S. Olsen
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Jumbo M. Bright
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Biswanath Das
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
- MRI-Syngenta, Lusaka, Zambia
| | - Stephen Mugo
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - L. M. Suresh
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Boddupalli M. Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| |
Collapse
|
18
|
Beyene Y, Gowda M, Suresh LM, Mugo S, Olsen M, Oikeh SO, Juma C, Tarekegne A, Prasanna BM. Genetic analysis of tropical maize inbred lines for resistance to maize lethal necrosis disease. EUPHYTICA: NETHERLANDS JOURNAL OF PLANT BREEDING 2017; 213:224. [PMID: 32009665 PMCID: PMC6961509 DOI: 10.1007/s10681-017-2012-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/23/2017] [Indexed: 05/29/2023]
Abstract
Maize lethal necrosis (MLN) disease is a recent outbreak in eastern Africa and has emerged as a significant threat to maize production in the region. The disease is caused by the co-infection of Maize chlorotic mottle virus and any member of potyviridae family. A total of 28 maize inbred lines with varying levels of tolerance to MLN were crossed in a half-diallel mating design, and the resulting 340 F1 crosses and four commercial checks were evaluated under MLN artificial inoculation at Naivasha, Kenya in 2015 and 2016 using an alpha lattice design with two replications. The objectives of the study were to (i) investigate the magnitude of general combining ability variance (σGCA 2) and specific combining ability variance (σSCA 2) and their interaction with years; (ii) evaluate the efficiencies of GCA based prediction and hybrid performance by means of a cross-validation procedure; (iii) estimate trait correlations in the hybrids; and (iv) identify the MLN tolerant single cross hybrids to be used as female parents for three-way cross hybrids. Results of the combined analysis of variance revealed that both GCA and SCA effects were significant (P < 0.05) for all traits except for ear rot. For MLN scores at early and late stages, GCA effects were 2.5-3.5 times higher than SCA effects indicating that additive gene action is more important than non-additive gene action. The GCA based prediction efficiency for MLN resistance and grain yield accounted for 67-90% of the variations in the hybrid performance suggesting that GCA-based prediction can be proposed to predict MLN resistance and grain yield prior to field evaluation. Three parents, CKDHL120918, CML550, and CKLTI0227 with significant GCA effects for GY (0.61-1.21; P < 0.05) were the most resistant to MLN. Hybrids "CKLTI0227 × CML550", "CKDHL120918 × CKLTI0138", and "CKDHL120918 × CKLTI0136" ranked among the best performing hybrids with grain yield of 6.0-6.6 t/ha compared with mean yield of commercial check hybrids (0.6 t/ha). The MLN tolerant inbred lines and single cross hybrids identified in this study could be used to improve MLN tolerance in both public and private sector maize breeding programs in eastern Africa.
Collapse
Affiliation(s)
- Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - L. M. Suresh
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Stephen Mugo
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Michael Olsen
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Sylvester O. Oikeh
- African Agricultural Technology Foundation (AATF), P.O. Box 30709-00100, Nairobi, Kenya
| | - Collins Juma
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Amsal Tarekegne
- International Maize and Wheat Improvement Center (CIMMYT), 12.5 km Peg Mazowe Road, Mount Pleasant, P.O. Box MP163, Harare, Zimbabwe
| | - Boddupalli M. Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| |
Collapse
|
19
|
Iqbal MS, Jabbar B, Sharif MN, Ali Q, Husnain T, Nasir IA. In silico MCMV Silencing Concludes Potential Host-Derived miRNAs in Maize. FRONTIERS IN PLANT SCIENCE 2017; 8:372. [PMID: 28400775 PMCID: PMC5368279 DOI: 10.3389/fpls.2017.00372] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 03/03/2017] [Indexed: 05/25/2023]
Abstract
Maize Chlorotic Mottle Virus (MCMV) is a deleterious pathogen which causes Maize Lethal Necrosis Disease (MLND) that results in substantial yield loss of Maize crop worldwide. The positive-sense RNA genome of MCMV (4.4 kb) encodes six proteins: P32 (32 kDa protein), RNA dependent RNA polymerases (P50 and P111), P31 (31 kDa protein), P7 (7 kDa protein), coat protein (25 kDa). P31, P7 and coat protein are encoded from sgRNA1, located at the 3'end of the genome and sgRNA2 is located at the extremity of the 3'genome end. The objective of this study is to locate the possible attachment sites of Zea mays derived miRNAs in the genome of MCMV using four diverse miRNA target prediction algorithms. In total, 321 mature miRNAs were retrieved from miRBase (miRNA database) and were tested for hybridization of MCMV genome. These algorithms considered the parameters of seed pairing, minimum free energy, target site accessibility, multiple target sites, pattern recognition and folding energy for attachment. Out of 321 miRNAs only 10 maize miRNAs are predicted for silencing of MCMV genome. The results of this study can hence act as the first step towards the development of MCMV resistant transgenic Maize plants through expression of the selected miRNAs.
Collapse
Affiliation(s)
| | - Basit Jabbar
- Center of Excellence in Molecular Biology, University of the PunjabLahore, Pakistan
- Institute of Biochemistry and Biotechnology, University of the PunjabLahore, Pakistan
| | | | - Qurban Ali
- Center of Excellence in Molecular Biology, University of the PunjabLahore, Pakistan
| | - Tayyab Husnain
- Center of Excellence in Molecular Biology, University of the PunjabLahore, Pakistan
| | - Idrees A. Nasir
- Center of Excellence in Molecular Biology, University of the PunjabLahore, Pakistan
| |
Collapse
|
20
|
Beyene Y, Gowda M, Suresh LM, Mugo S, Olsen M, Oikeh SO, Juma C, Tarekegne A, Prasanna BM. Genetic analysis of tropical maize inbred lines for resistance to maize lethal necrosis disease. EUPHYTICA: NETHERLANDS JOURNAL OF PLANT BREEDING 2017; 213:224. [PMID: 32009665 DOI: 10.1007/s1068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/23/2017] [Indexed: 05/20/2023]
Abstract
Maize lethal necrosis (MLN) disease is a recent outbreak in eastern Africa and has emerged as a significant threat to maize production in the region. The disease is caused by the co-infection of Maize chlorotic mottle virus and any member of potyviridae family. A total of 28 maize inbred lines with varying levels of tolerance to MLN were crossed in a half-diallel mating design, and the resulting 340 F1 crosses and four commercial checks were evaluated under MLN artificial inoculation at Naivasha, Kenya in 2015 and 2016 using an alpha lattice design with two replications. The objectives of the study were to (i) investigate the magnitude of general combining ability variance (σGCA 2) and specific combining ability variance (σSCA 2) and their interaction with years; (ii) evaluate the efficiencies of GCA based prediction and hybrid performance by means of a cross-validation procedure; (iii) estimate trait correlations in the hybrids; and (iv) identify the MLN tolerant single cross hybrids to be used as female parents for three-way cross hybrids. Results of the combined analysis of variance revealed that both GCA and SCA effects were significant (P < 0.05) for all traits except for ear rot. For MLN scores at early and late stages, GCA effects were 2.5-3.5 times higher than SCA effects indicating that additive gene action is more important than non-additive gene action. The GCA based prediction efficiency for MLN resistance and grain yield accounted for 67-90% of the variations in the hybrid performance suggesting that GCA-based prediction can be proposed to predict MLN resistance and grain yield prior to field evaluation. Three parents, CKDHL120918, CML550, and CKLTI0227 with significant GCA effects for GY (0.61-1.21; P < 0.05) were the most resistant to MLN. Hybrids "CKLTI0227 × CML550", "CKDHL120918 × CKLTI0138", and "CKDHL120918 × CKLTI0136" ranked among the best performing hybrids with grain yield of 6.0-6.6 t/ha compared with mean yield of commercial check hybrids (0.6 t/ha). The MLN tolerant inbred lines and single cross hybrids identified in this study could be used to improve MLN tolerance in both public and private sector maize breeding programs in eastern Africa.
Collapse
Affiliation(s)
- Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - L M Suresh
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Stephen Mugo
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Michael Olsen
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Sylvester O Oikeh
- 2African Agricultural Technology Foundation (AATF), P.O. Box 30709-00100, Nairobi, Kenya
| | - Collins Juma
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| | - Amsal Tarekegne
- International Maize and Wheat Improvement Center (CIMMYT), 12.5 km Peg Mazowe Road, Mount Pleasant, P.O. Box MP163, Harare, Zimbabwe
| | - Boddupalli M Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya
| |
Collapse
|
21
|
Chen L, Jiao Z, Liu D, Liu X, Xia Z, Deng C, Zhou T, Fan Z. One-step reverse transcription loop-mediated isothermal amplification for the detection of Maize chlorotic mottle virus in maize. J Virol Methods 2016; 240:49-53. [PMID: 27899288 DOI: 10.1016/j.jviromet.2016.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 10/02/2016] [Accepted: 11/26/2016] [Indexed: 10/20/2022]
Abstract
Maize chlorotic mottle virus (MCMV) is spreading in many regions worldwide, causing maize lethal necrosis when co-infected with a potyvirid. In this study, one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed to detect MCMV in maize. A set of four specific primers was designed based on the conserved coat protein gene sequences of MCMV. The RT-LAMP could be completed within 60min under isothermal condition at 63°C. The sensitivity test showed that the RT-LAMP was about 10-fold more sensitive than RT-PCR and no cross-reactivity was detected with other viral pathogens infecting maize in China. Moreover, the results of RT-LAMP could be visually inspected by SYBR Green I staining in a closed-tube, facilitating high-throughput application of MCMV detection. This method was further verified by testing field-collected samples. These results suggested that the developed MCMV RT-LAMP technique is a rapid, efficient and sensitive method which could be used as a routine screen for MCMV infection.
Collapse
Affiliation(s)
- Ling Chen
- State Key Laboratory of Agro-biotechnology and Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Zhiyuan Jiao
- State Key Laboratory of Agro-biotechnology and Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Dongmei Liu
- State Key Laboratory of Agro-biotechnology and Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Xingliang Liu
- Beijing Entry-exit Inspection and Quarantine Bureau, Beijing 100016, China
| | - Zihao Xia
- State Key Laboratory of Agro-biotechnology and Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Congliang Deng
- Beijing Entry-exit Inspection and Quarantine Bureau, Beijing 100016, China
| | - Tao Zhou
- State Key Laboratory of Agro-biotechnology and Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Zaifeng Fan
- State Key Laboratory of Agro-biotechnology and Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
22
|
Su Y, Yang Y, Peng Q, Zhou D, Chen Y, Wang Z, Xu L, Que Y. Development and application of a rapid and visual loop-mediated isothermal amplification for the detection of Sporisorium scitamineum in sugarcane. Sci Rep 2016; 6:23994. [PMID: 27035751 PMCID: PMC4817513 DOI: 10.1038/srep23994] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 03/16/2016] [Indexed: 11/09/2022] Open
Abstract
Smut is a fungal disease with widespread prevalence in sugarcane planting areas. Early detection and proper identification of Sporisorium scitamineum are essential in smut management practices. In the present study, four specific primers targeting the core effector Pep1 gene of S. scitamineum were designed. Optimal concentrations of Mg(2+), primer and Bst DNA polymerase, the three important components of the loop-mediated isothermal amplification (LAMP) reaction system, were screened using a single factor experiment method and the L16(4(5)) orthogonal experimental design. Hence, a LAMP system suitable for detection of S. scitamineum was established. High specificity of the LAMP method was confirmed by the assay of S. scitamineum, Fusarium moniliforme, Pestalotia ginkgo, Helminthospcrium sacchari, Fusarium oxysporum and endophytes of Yacheng05-179 and ROC22. The sensitivity of the LAMP method was equal to that of the conventional PCR targeting Pep1 gene and was 100 times higher than that of the conventional PCR assay targeting bE gene in S. scitamineum. The results suggest that this novel LAMP system has strong specificity and high sensitivity. This method not only provides technological support for the epidemic monitoring of sugarcane smut, but also provides a good case for development of similar detection technology for other plant pathogens.
Collapse
Affiliation(s)
- Yachun Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Yuting Yang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Qiong Peng
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Dinggang Zhou
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Yun Chen
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Zhuqing Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Liping Xu
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China
| |
Collapse
|
23
|
Liu Z, Xia X, Yang C, Huang J. Colorimetric detection of Maize chlorotic mottle virus by reverse transcription loop-mediated isothermal amplification (RT-LAMP) with hydroxynapthol blue dye. RSC Adv 2016. [DOI: 10.1039/c5ra20789d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Maize chlorotic mottle virus causes corn lethal necrosis disease, and can be transmitted via infected maize seeds. A colorimetric assay for the detection of Maize chlorotic mottle virus was developed which utilises RT-LAMP and hydroxynapthol blue dye (HNB).
Collapse
Affiliation(s)
- Zhanmin Liu
- School of Life Sciences
- Shanghai University
- Shanghai
- China
| | - Xueying Xia
- School of Life Sciences
- Shanghai University
- Shanghai
- China
| | - Cuiyun Yang
- Shanghai Entry-Exit Inspection and Quarantine Bureau
- Shanghai 200135
- China
| | - Junyi Huang
- School of Life Sciences
- Shanghai University
- Shanghai
- China
| |
Collapse
|
24
|
Liu Z, Xia X, Yang C, Wang L. Visual detection of Maize chlorotic mottle virus using unmodified gold nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra16326a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Visual detection of Maize chlorotic mottle virus was investigated using unmodified gold nanoparticles (AuNPs).
Collapse
Affiliation(s)
- Zhanmin Liu
- School of Life Sciences
- Shanghai University
- Shanghai
- China
| | - Xueying Xia
- School of Life Sciences
- Shanghai University
- Shanghai
- China
| | - Cuiyun Yang
- Shanghai Entry-Exit Inspection and Quarantine Bureau
- Shanghai 200135
- China
| | - Lin Wang
- School of Life Sciences
- Shanghai University
- Shanghai
- China
| |
Collapse
|
25
|
Zhu M, Chen Y, Ding XS, Webb SL, Zhou T, Nelson RS, Fan Z. Maize Elongin C interacts with the viral genome-linked protein, VPg, of Sugarcane mosaic virus and facilitates virus infection. THE NEW PHYTOLOGIST 2014; 203:1291-1304. [PMID: 24954157 PMCID: PMC4143955 DOI: 10.1111/nph.12890] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 05/08/2014] [Indexed: 05/18/2023]
Abstract
The viral genome-linked protein, VPg, of potyviruses is involved in viral genome replication and translation. To determine host proteins that interact with Sugarcane mosaic virus (SCMV) VPg, a yeast two-hybrid screen was used and a maize (Zea mays) Elongin C (ZmElc) protein was identified. ZmELC transcript was observed in all maize organs, but most highly in leaves and pistil extracts, and ZmElc was present in the cytoplasm and nucleus of maize cells in the presence or absence of SCMV. ZmELC expression was increased in maize tissue at 4 and 6 d post SCMV inoculation. When ZmELC was transiently overexpressed in maize protoplasts the accumulation of SCMV RNA was approximately doubled compared with the amount of virus in control protoplasts. Silencing ZmELC expression using a Brome mosaic virus-based gene silencing vector (virus-induced gene silencing) did not influence maize plant growth and development, but did decrease RNA accumulation of two isolates of SCMV and host transcript encoding ZmeIF4E during SCMV infection. Interestingly, Maize chlorotic mottle virus, from outside the Potyviridae, was increased in accumulation after silencing ZmELC expression. Our results describe both the location of ZmElc expression in maize and a new activity associated with an Elc: support of potyvirus accumulation.
Collapse
Affiliation(s)
- Min Zhu
- State Key Laboratory of Agro-biotechnology and Key Laboratory for Plant Pathology – Ministry of Agriculture, China Agricultural UniversityBeijing, 100193, China
| | - Yuting Chen
- State Key Laboratory of Agro-biotechnology and Key Laboratory for Plant Pathology – Ministry of Agriculture, China Agricultural UniversityBeijing, 100193, China
| | - Xin Shun Ding
- Plant Biology Division, The Samuel Roberts Noble Foundation, Inc.2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Stephen L Webb
- Department of Computing Services, The Samuel Roberts Noble Foundation Inc.2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Tao Zhou
- State Key Laboratory of Agro-biotechnology and Key Laboratory for Plant Pathology – Ministry of Agriculture, China Agricultural UniversityBeijing, 100193, China
| | - Richard S Nelson
- Plant Biology Division, The Samuel Roberts Noble Foundation, Inc.2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Zaifeng Fan
- State Key Laboratory of Agro-biotechnology and Key Laboratory for Plant Pathology – Ministry of Agriculture, China Agricultural UniversityBeijing, 100193, China
| |
Collapse
|
26
|
Wu JX, Wang Q, Liu H, Qian YJ, Xie Y, Zhou XP. Monoclonal antibody-based serological methods for maize chlorotic mottle virus detection in China. J Zhejiang Univ Sci B 2014; 14:555-62. [PMID: 23825140 DOI: 10.1631/jzus.b1200275] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Maize chlorotic mottle virus (MCMV) infects maize plants and causes significant losses in corn production worldwide. In this study, purified MCMV particles were used as the immunogen to produce monoclonal antibodies (MAbs) and polyclonal antibodies (PAbs). Four murine MAbs (4B8, 8C11, 6F4, and 9G1) against MCMV were obtained through the hybridoma technology. The triple antibody sandwich enzyme-linked immunosorbent assay (TAS-ELISA), dot-immunobinding assay (DIBA), and immunocapture reverse transcription-polymerase chain reaction (IC-RT-PCR) using the MAb 4B8 were then developed for sensitive, specific, and rapid detection of MCMV in fields. MCMV could be detected in infected leaf crude extracts at dilutions of 1:327680, 1:64000, and 1:3276800 (w/v, g/ml) by TAS-ELISA, DIBA, and IC-RT-PCR, respectively. One hundred and sixty-one maize field samples showing virus-like symptoms and sixty-nine symptomless maize field samples from ten different provinces of China were collected and screened for the presence of MCMV using the established serological methods. A phylogenetic tree was constructed based on the full length CP genes and Chinese MCMV isolates formed one branch with Thailand isolates. The detection results demonstrated that MCMV is one of most prevalent viruses infecting maize in the Yunnan and Sichuan provinces of China.
Collapse
Affiliation(s)
- Jian-Xiang Wu
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | | | | | | | | | | |
Collapse
|
27
|
Su Y, Wang S, Guo J, Xue B, Xu L, Que Y. A TaqMan real-time PCR assay for detection and quantification of Sporisorium scitamineum in sugarcane. ScientificWorldJournal 2013; 2013:942682. [PMID: 24228020 PMCID: PMC3819024 DOI: 10.1155/2013/942682] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 09/04/2013] [Indexed: 11/18/2022] Open
Abstract
Sporisorium scitamineum is a fungal smut pathogen epidemic in sugarcane producing areas. Early detection and proper identification of the smut are an essential requirement in its management practice. In this study, we developed a TaqMan real-time PCR assay using specific primers (bEQ-F/bEQ-R) and a TaqMan probe (bEQ-P) which were designed based on the bE (b East mating type) gene (Genbank Accession no. U61290.1). This method was more sensitive (a detection limit of 10 ag pbE DNA and 0.8 ng sugarcane genomic DNA) than that of conventional PCR (10 fg and 100 ng, resp.). Reliability was demonstrated through the positive detection of samples collected from artificially inoculated sugarcane plantlets (FN40). This assay was capable of detecting the smut pathogen at the initial stage (12 h) of infection and suitable for inspection of sugarcane pathogen-free seed cane and seedlings. Furthermore, quantification of pathogen was verified in pathogen-challenged buds in different sugarcane genotypes, which suggested its feasibility for evaluation of smut resistance in different sugarcane genotypes. Taken together, this novel assay can be used as a diagnostic tool for sensitive, accurate, fast, and quantitative detection of the smut pathogen especially for asymptomatic seed cane or plants and evaluation of smut resistance of sugarcane genotypes.
Collapse
Affiliation(s)
- Yachun Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture/Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shanshan Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture/Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jinlong Guo
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture/Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Bantong Xue
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture/Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Liping Xu
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture/Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture/Fujian Agriculture and Forestry University, Fuzhou 350002, China
| |
Collapse
|
28
|
Zeng C, Huang X, Xu J, Li G, Ma J, Ji HF, Zhu S, Chen H. Rapid and sensitive detection of maize chlorotic mottle virus using surface plasmon resonance-based biosensor. Anal Biochem 2013; 440:18-22. [PMID: 23660014 DOI: 10.1016/j.ab.2013.04.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 11/26/2022]
Abstract
We report a biosensor based on surface plasmon resonance (SPR) for the selective detection of maize chlorotic mottle virus (MCMV). 11-Mercaptoundecanoic acid was applied on a gold surface to form a self-assembled monolayer, and a layer of anti-MCMV antibody was crosslinked on the surface for specific recognition of MCMV. The effects of coupling reaction time and antibody concentration on detection sensitivity were studied. The coverage mass change is a function of the concentration of MCMV with a dynamic range from 1 to 1000 ppb. The detection limit is approximately 1 ppb, which is approximately two orders of magnitude higher than that of the existing enzyme-linked immunosorbent assay (ELISA) method. The developed SPR sensor showed highly specific recognition for both purified MCMV and crude extracts from real-world samples.
Collapse
Affiliation(s)
- Chang Zeng
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100029, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|