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Paul SK, Gupta DR, Ino M, Ueno M. Development of a PCR-based assay for specific and sensitive detection of Fusarium buharicum from infected okra plant. PLoS One 2024; 19:e0302256. [PMID: 38626135 PMCID: PMC11020393 DOI: 10.1371/journal.pone.0302256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 03/29/2024] [Indexed: 04/18/2024] Open
Abstract
Fusarium wilt, caused by the fungus Fusarium buharicum, is an emerging disease of okra in Japan. The disease was first reported in Japan in 2015, causing significant damage to okra seedlings. Due to the potential threat in okra cultivation, the development of an accurate detection method for F. buharicum is needed for the surveillance and management of the disease. In this study, we designed a primer set and developed conventional and nested PCR assays for the specific detection of F. buharicum in infected okra plants and contaminated soil, respectively. We compared the diversity of the translation elongation factor 1 alpha (EF-1α) gene of F. buharicum with 103 other fungal species/isolates to design a species-specific primer. This primer pair successfully amplified approximately 400 bp of PCR product that was only detected in the F. buharicum isolate, not in the other fungal isolates. The developed nested PCR method was highly sensitive and could detect the fungus from a 0.01 fg DNA sample. The primer successfully detected the pathogen in artificially infected plants and soil by conventional and nested PCR, respectively. This is the first report of the development of the F. buharicum-specific primer set and detection assays, which can be used for the specific and sensitive detection of F. buharicum in field samples and for taking early control measures.
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Affiliation(s)
- Swapan Kumar Paul
- Laboratory of Plant Pathology, Faculty of Life and Environmental Sciences, Shimane University, Shimane, Japan
- Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Dipali Rani Gupta
- Laboratory of Plant Pathology, Faculty of Life and Environmental Sciences, Shimane University, Shimane, Japan
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Masatoshi Ino
- Laboratory of Plant Pathology, Faculty of Life and Environmental Sciences, Shimane University, Shimane, Japan
| | - Makoto Ueno
- Laboratory of Plant Pathology, Faculty of Life and Environmental Sciences, Shimane University, Shimane, Japan
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Shrestha BK, Ward BM, Allen TW, da Silva ET, Zulli H, Dunford W, Doyle V, Bradley CA, Buckley B, Chen P, Clubb M, Kelly H, Koebernick J, Padgett B, Rupe JC, Sikora EJ, Spurlock TN, Thomas-Sharma S, Tolbert A, Zhou XG, Price PP. Characterization of QoI-Fungicide Resistance in Cercospora Isolates Associated with Cercospora Leaf Blight of Soybean from the Southern United States. Plant Dis 2024; 108:149-161. [PMID: 37578368 DOI: 10.1094/pdis-03-23-0588-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Cercospora leaf blight (CLB) of soybean, caused by Cercospora cf. flagellaris, C. kikuchii, and C. cf. sigesbeckiae, is an economically important disease in the southern United States. Cultivar resistance to CLB is inconsistent; therefore, fungicides in the quinone outside inhibitor (QoI) class have been relied on to manage the disease. Approximately 620 isolates from plants exhibiting CLB were collected between 2018 and 2021 from 19 locations in eight southern states. A novel polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay based on two genes, calmodulin and histone h3, was developed to differentiate between the dominant species of Cercospora, C. cf. flagellaris, and C. cf. sigesbeckiae. A multilocus phylogenetic analysis of actin, calmodulin, histone h3, ITS rDNA, and transcription elongation factor 1-α was used to confirm PCR-RFLP results and identify remaining isolates. Approximately 80% of the isolates collected were identified as C. cf. flagellaris, while 15% classified as C. cf. sigesbeckiae, 2% as C. kikuchii, and 3% as previously unreported Cercospora species associated with CLB in the United States. PCR-RFLP of cytochrome b (cytb) identified QoI-resistance conferred by the G143A substitution. Approximately 64 to 83% of isolates were determined to be QoI-resistant, and all contained the G143A substitution. Results of discriminatory dose assays using azoxystrobin (1 ppm) were 100% consistent with PCR-RFLP results. To our knowledge, this constitutes the first report of QoI resistance in CLB pathogen populations from Alabama, Arkansas, Kentucky, Mississippi, Missouri, Tennessee, and Texas. In areas where high frequencies of resistance have been identified, QoI fungicides should be avoided, and fungicide products with alternative modes-of-action should be utilized in the absence of CLB-resistant soybean cultivars.
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Affiliation(s)
| | - Brian M Ward
- Department of Plant Pathology and Crop Physiology, LSU AgCenter, Baton Rouge, LA
| | - Tom W Allen
- Delta Research and Extension Center, Mississippi State University, Stoneville, MS
| | - Ernesto T da Silva
- Department of Plant Pathology and Crop Physiology, LSU AgCenter, Baton Rouge, LA
| | - Hannah Zulli
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA
| | - Will Dunford
- Department of Plant Pathology and Crop Physiology, LSU AgCenter, Baton Rouge, LA
| | - Vinson Doyle
- Department of Plant Pathology and Crop Physiology, LSU AgCenter, Baton Rouge, LA
| | - Carl A Bradley
- Department of Plant Pathology, University of Kentucky, Princeton, KY
| | - Blair Buckley
- Red River Research Station, LSU AgCenter, Bossier, LA
| | - Pengyin Chen
- Fisher Delta Research Center, University of Missouri, Portageville, MO
| | - Michael Clubb
- Fisher Delta Research Center, University of Missouri, Portageville, MO
| | - Heather Kelly
- West Tennessee Research and Education Center, University of Tennessee, Jackson, TN
| | - Jenny Koebernick
- Department of Crop, Soil, and Environmental Science, Auburn University, Auburn, AL
| | - Boyd Padgett
- Dean Lee Research and Extension Center, LSU AgCenter, Alexandria, LA
| | - John C Rupe
- Department of Crop, Soil, and Environmental Science, University of Arkansas, Fayetteville, AR
| | - Ed J Sikora
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL
| | - Terry N Spurlock
- Department of Crop, Soil, and Environmental Science, University of Arkansas, Fayetteville, AR
| | - Sara Thomas-Sharma
- Department of Plant Pathology and Crop Physiology, LSU AgCenter, Baton Rouge, LA
| | - Amanda Tolbert
- Department of Crop, Soil, and Environmental Science, University of Arkansas, Fayetteville, AR
| | - Xin-Gen Zhou
- Research and Extension Center, Texas A&M University, Beaumont, TX
| | - Paul P Price
- Macon Ridge Research Station, LSU AgCenter, Winnsboro, LA
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Gao M, Zhang M, Zhang J, Yang X, Abdallah MF, Wang J. Phylogenetic Variation of Tri1 Gene and Development of PCR-RFLP Analysis for the Identification of NX Genotypes in Fusarium graminearum Species Complex. Toxins (Basel) 2023; 15:692. [PMID: 38133196 PMCID: PMC10747927 DOI: 10.3390/toxins15120692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/01/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
NX toxins have been described as a novel group of type A trichothecenes produced by members of the Fusarium graminearum species complex (FGSC). Differences in structure between NX toxins and the common type B trichothecenes arise from functional variation in the trichothecene biosynthetic enzyme Tri1 in the FGSC. The identified highly conserved changes in the Tri1 gene can be used to develop specific PCR-based assays to identify the NX-producing strains. In this study, the sequences of the Tri1 gene from type B trichothecene- and NX-producing strains were analyzed to identify DNA polymorphisms between the two different kinds of trichothecene producers. Four sets of Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) methods were successfully developed to distinguish the common type B trichothecene producers and NX producers within FGSC. These promising diagnostic methods can be used for high-throughput genotype detection of Fusarium strains as a step forward for crop disease management and mycotoxin control in agriculture. Additionally, it was found that the Tri1 gene phylogeny differs from the species phylogeny, which is consistent with the previous studies.
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Affiliation(s)
- Meiling Gao
- Institute for Agro-Food Standards and Testing Technology, Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China; (M.G.); (M.Z.); (J.Z.); (X.Y.)
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Mengyuan Zhang
- Institute for Agro-Food Standards and Testing Technology, Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China; (M.G.); (M.Z.); (J.Z.); (X.Y.)
| | - Jiahui Zhang
- Institute for Agro-Food Standards and Testing Technology, Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China; (M.G.); (M.Z.); (J.Z.); (X.Y.)
| | - Xianli Yang
- Institute for Agro-Food Standards and Testing Technology, Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China; (M.G.); (M.Z.); (J.Z.); (X.Y.)
| | - Mohamed F. Abdallah
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium;
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Assiut University, Assiut 71515, Egypt
| | - Jianhua Wang
- Institute for Agro-Food Standards and Testing Technology, Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China; (M.G.); (M.Z.); (J.Z.); (X.Y.)
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Luis JM, Mehl HL, Plewa D, Kleczewski NM. Is Microdochium maydis Associated with Necrotic Lesions in the Tar Spot Disease Complex? A Culture-Based Survey of Maize in Mexico and the Midwestern United States. Phytopathology 2023; 113:1890-1897. [PMID: 37294212 DOI: 10.1094/phyto-04-23-0109-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tar spot, caused by Phyllachora maydis, is an emerging disease of corn in the United States. Stromata of P. maydis are sometimes surrounded by necrotic lesions known as fisheyes and were previously reported to be caused by the fungus Microdochium maydis. The association of M. maydis with fisheye lesions has not been well documented outside of initial descriptions from the early 1980s. The objective of this work was to assess and identify Microdochium-like fungi associated with necrotic lesions surrounding P. maydis stromata using a culture-based method. In 2018, corn leaf samples with fisheye lesions associated with tar spot stromata were collected from 31 production fields across Mexico, Illinois, and Wisconsin. Cultures of pure isolates collected from Mexico believed to be M. maydis were included in the study. A total of 101 Microdochium/Fusarium-like isolates were obtained from the necrotic lesions, and 91% were identified as Fusarium spp., based on initial ITS sequence data. Multi-gene (ITS, TEF1-α, RPB1, and RPB2) phylogenies were constructed for a subset of 55 isolates; Microdochium, Cryptostroma, and Fusarium reference sequences were obtained from GenBank. All the necrotic lesion isolates clustered within Fusarium lineages and were phylogenetically distinct from the Microdochium clade. All Fusarium isolates from Mexico belonged to the F. incarnatum-equiseti species complex, whereas >85% of the U.S. isolates grouped within the F. sambucinum species complex. Our study suggests that initial reports of M. maydis were misidentifications of resident Fusarium spp. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Jane Marian Luis
- Tidewater Agricultural Research and Extension Center, Virginia Tech, Suffolk, VA 23437
| | - Hillary L Mehl
- Tidewater Agricultural Research and Extension Center, Virginia Tech, Suffolk, VA 23437
- Current address: United States Department of Agriculture, Agricultural Research Service, Arid-Land Agricultural Research Center, Tucson, AZ 85701
| | - Dianne Plewa
- Department of Crop Science, University of Illinois, Urbana, IL 61801
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Feizollahi E, Basu U, Fredua-Agyeman R, Jeganathan B, Tonoyan L, Strelkov SE, Vasanthan T, Siraki AG, Roopesh MS. Effect of Plasma-Activated Water Bubbles on Fusarium graminearum, Deoxynivalenol, and Germination of Naturally Infected Barley during Steeping. Toxins (Basel) 2023; 15:toxins15020124. [PMID: 36828438 PMCID: PMC9967671 DOI: 10.3390/toxins15020124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Contamination of barley by deoxynivalenol (DON), a mycotoxin produced by Fusarium graminearum, causes considerable financial loss to the grain and malting industries. In this study, two atmospheric cold plasma (ACP) reactors were used to produce plasma-activated water (PAW) bubbles. The potential of PAW bubbles for the steeping of naturally infected barley (NIB) during the malting process was investigated. The PAW bubbles produced by treating water for 30 min using a bubble spark discharge (BSD) at low temperature resulted in the greatest concentration of oxygen-nitrogen reactive species (RONS). This treatment resulted in 57.3% DON degradation compared with 36.9% in the control sample; however, the same treatment reduced germination significantly (p < 0.05). Direct BSD ACP treatment for 20 min at low temperature and indirect treatment for 30 min increased the percentage of germinated rootlets of the seedlings compared with the control. Considering both the DON reduction and germination improvement of barley seeds, continuous jet ACP treatment for 30 min performed better than the other treatments used in this study. At higher temperature of PAW bubbles, the concentration of RONS was significantly (p < 0.05) reduced. Based on quantitative polymerase chain reaction (qPCR) analysis and fungal culture tests, the PAW bubble treatment did not significantly reduce infection of NIB. Nonetheless, this study provides useful information for the malting industry for PAW treatment optimization and its use in barley steeping for DON reduction and germination improvement.
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Affiliation(s)
- Ehsan Feizollahi
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Urmila Basu
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Rudolph Fredua-Agyeman
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Brasathe Jeganathan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Lusine Tonoyan
- Applied Pharmaceutical Innovation, University of Alberta, Edmonton, AB T6G 2R3, Canada
- Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Stephen E. Strelkov
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Thava Vasanthan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Arno G. Siraki
- Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - M. S. Roopesh
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
- Correspondence:
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Hafez M, Telfer M, Chatterton S, Aboukhaddour R. Specific Detection and Quantification of Major Fusarium spp. Associated with Cereal and Pulse Crops. Methods Mol Biol 2023; 2659:1-21. [PMID: 37249881 DOI: 10.1007/978-1-0716-3159-1_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Plant pathogenic Fusarium spp. are widespread and cause important diseases on a wide host range, including economically important cereal and pulse crops. A number of molecular methods have been used to detect, identify, and quantify a long list of plant pathogenic Fusarium spp. In general, these methods are much faster, highly specific, more sensitive, and more accurate than culture-based methods and can be performed and interpreted by personnel with no specialized taxonomical expertise. The accurate isolation and identification of these pathogens is required to effectively manage diseases caused by pathogenic Fusarium spp. In this chapter, we present detailed molecular methods for detection, quantification, and differentiation between many of the Fusarium spp. associated with cereal and pulse crops.
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Affiliation(s)
- Mohamed Hafez
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada.
| | - Melissa Telfer
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
| | - Syama Chatterton
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
| | - Reem Aboukhaddour
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
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Liang X, Zhang X, Haseeb HA, Tang T, Shan J, Yin B, Guo W. Development and evaluation of a novel visual and rapid detection assay for toxigenic Fusarium graminearum in maize based on recombinase polymerase amplification and lateral flow analysis. Int J Food Microbiol 2022; 372:109682. [DOI: 10.1016/j.ijfoodmicro.2022.109682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/29/2022] [Accepted: 04/15/2022] [Indexed: 11/18/2022]
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Pramunadipta S, Widiastuti A, Wibowo A, Suga H, Priyatmojo A. Development of PCR-RFLP Technique for Identify Several Members of Fusarium incarnatum-equiseti Species Complex and Fusarium fujikuroi Species Complex. Plant Pathol J 2022; 38:254-260. [PMID: 35678059 PMCID: PMC9343909 DOI: 10.5423/ppj.nt.12.2021.0184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/04/2022] [Accepted: 04/25/2022] [Indexed: 06/15/2023]
Abstract
Fusarium incarnatum-equiseti species complex (FIESC) contain over 40 members. The primer pair Smibo1FM/Semi1RM on the RPB2 partial gene has been reported to be able to identify Fusarium semitectum. The F. fujikuroi species complex (FFSC) contains more than 50 members. The F. verticillioides as a member of this complex can be identified by using VER1/VER2 primer pair on the CaM partial gene. In this research, the Smibo1FM/Semi1RM can amplify F. sulawesiense, F. hainanense, F. bubalinum, and F. tanahbumbuense, members of FIESC at 424 bp. The VER1/VER2 can amplify F. verticillioides, F. andiyazi, and F. pseudocircinatum, members of FFSC at 578 bp. Polymerase chain reaction-restriction fragment length polymorphism by using the combination of three restriction enzymes EcoRV, MspI, and HpyAV can differentiate each species of FIESC used. The two restriction enzymes HpaII and NspI can distinguish each species of FFSC used. The proper identification process is required for pathogen control in the field in order to reduce crop yield loss.
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Affiliation(s)
- Syafiqa Pramunadipta
- Graduate Student of Doctoral Program in Agricultural Science, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281,
Indonesia
| | - Ani Widiastuti
- Departement of Plant Protection, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281,
Indonesia
| | - Arif Wibowo
- Departement of Plant Protection, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281,
Indonesia
| | - Haruhisa Suga
- Life Science Research Center, Gifu University, Gifu 501-1193,
Japan
| | - Achmadi Priyatmojo
- Departement of Plant Protection, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281,
Indonesia
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Hafez M, Gourlie R, Telfer M, Schatz N, Turkington TK, Beres B, Aboukhaddour R. Diversity of Fusarium spp. Associated with Wheat Node and Grain in Representative Sites Across the Western Canadian Prairies. Phytopathology 2022; 112:1003-1015. [PMID: 34818906 DOI: 10.1094/phyto-06-21-0241-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fusarium head blight (FHB) and Fusarium crown and root rot (FCRR) are major wheat diseases. Populations of FHB and FCRR pathogens are highly dynamic, and shifts in these populations in different regions is reported. Analyzing fungal populations associated with wheat node and grain tissues collected from different regions can provide useful information and predict diseases that might affect subsequent crops and effective disease management practices. In this study, wheat node and grain samples were collected from four representative sites across the western Canadian prairies in the 2018 growing season to characterize the major Fusarium spp. and other mycobiota associated with wheat in these regions. In total, 994 fungal isolates were recovered, and based on culture and molecular diagnostic methods, three genera constituted over 90% of all fungal isolates, namely Alternaria (39.6%), Fusarium (27.8%), and Parastagonospora (23.9%). A quantitative PCR (qPCR) diagnostic toolkit was developed to quantify the most frequently isolated Fusarium spp. in infected wheat tissues: Fusarium avenaceum, F. culmorum, F. graminearum, and F. poae. This qPCR specificity was validated in silico, in vitro, and in planta and proved specific to the target species. The qPCR results showed that F. graminearum was not detected frequently from wheat node and grain samples collected from four locations in this study. F. poae was the most abundant Fusarium species in grain samples in all tested locations. However, in node samples, F. culmorum (Beaverlodge and Scott) and F. avenaceum (Lacombe and Lethbridge) were the most abundant species. Trichothecene genotyping showed that the 3ADON is the most dominant trichothecene genotype (68%), followed by type-A trichothecenes (29.5%), whereas the 15ADON trichothecene genotype was least dominant (2.5%) and the NIV genotype was not detected. Moreover, a total of 129 translation elongation factor 1-alpha (TEF1α) sequences from nine Fusarium spp. were compared at the haplotype level to evaluate genetic variability and distribution. F. avenaceum and F. poae exhibited higher diversity as reflected by higher number of haplotypes present in these two species compared with the rest.
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Affiliation(s)
- Mohamed Hafez
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta T1J 4B1, Canada
| | - Ryan Gourlie
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta T1J 4B1, Canada
| | - Melissa Telfer
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta T1J 4B1, Canada
| | - Nicola Schatz
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta T1J 4B1, Canada
| | - Thomas K Turkington
- Agriculture and Agri-Food Canada, Lacombe Research and Development Center, Lacombe, Alberta T4L 1V7, Canada
| | - Brian Beres
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta T1J 4B1, Canada
| | - Reem Aboukhaddour
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta T1J 4B1, Canada
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Shang G, Li S, Yu H, Yang J, Li S, Yu Y, Wang J, Wang Y, Zeng Z, Zhang J, Hu Z. An Efficient Strategy Combining Immunoassays and Molecular Identification for the Investigation of Fusarium Infections in Ear Rot of Maize in Guizhou Province, China. Front Microbiol 2022; 13:849698. [PMID: 35369506 PMCID: PMC8964309 DOI: 10.3389/fmicb.2022.849698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Fusarium is one of the most important phytopathogenic and mycotoxigenic fungi that caused huge losses worldwide due to the decline of crop yield and quality. To systematically investigate the infections of Fusarium species in ear rot of maize in the Guizhou Province of China and analyze its population structure, 175 samples of rotted maize ears from 76 counties were tested by combining immunoassays and molecular identification. Immunoassay based on single-chain variable fragment (scFv) and alkaline phosphatase (AP) fusion protein was first employed to analyze these samples. Fusarium pathogens were isolated and purified from Fusarium-infected samples. Molecular identification was performed using the partial internal transcribed spacer (ITS) and translation elongation factor 1α (TEF-1α) sequences. Specific primers were used to detect toxigenic chemotypes, and verification was performed by liquid chromatography tandem mass spectrometry (LC-MS/MS). One-hundred and sixty three samples were characterized to be positive, and the infection rate was 93.14%. Sixteen species of Fusarium belonging to six species complexes were detected and Fusarium meridionale belonging to the Fusarium graminearum species complex (FGSC) was the dominant species. Polymerase chain reaction (PCR) identification illustrated that 69 isolates (56.10%) were potential mycotoxin-producing Fusarium pathogens. The key synthetic genes of NIV, NIV + ZEN, DON + ZEN, and FBs were detected in 3, 35, 7, and 24 isolates, respectively. A total of 86.11% of F. meridionale isolates carried both NIV- and ZEN-specific segments, while Fusarium verticillioides isolates mainly represented FBs chemotype. All the isolates carrying DON-producing fragments were FGSC. These results showed that there are different degrees of Fusarium infections in Guizhou Province and their species and toxigenic genotypes display regional distribution patterns. Therefore, scFv-AP fusion-based immunoassays could be conducted to efficiently investigate Fusarium infections and more attention and measures should be taken for mycotoxin contamination in this region.
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Affiliation(s)
- Guofu Shang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Shuqin Li
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Huan Yu
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Jie Yang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Shimei Li
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Yanqin Yu
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Jianman Wang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Yun Wang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China
| | - Zhu Zeng
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China.,Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Immune Cells and Antibody Engineering Research Center of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang, China.,State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Jingbo Zhang
- Wheat Anti-toxin Breeding Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zuquan Hu
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, School of Basic Medical Sciences/School of Biology and Engineering, Guizhou Medical University, Guiyang, China.,Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Immune Cells and Antibody Engineering Research Center of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang, China
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Hafez M, Abdelmagid A, Aboukhaddour R, Adam LR, Daayf F. Fusarium Root Rot Complex in Soybean: Molecular Characterization, Trichothecene Formation, and Cross-Pathogenicity. Phytopathology 2021; 111:2287-2302. [PMID: 33938238 DOI: 10.1094/phyto-03-21-0083-r] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Soybean is threatened by many pathogens that negatively affect this crop's yield and quality, such as various Fusarium species that cause wilting and root rot diseases. Fusarium root rot (FRR) in soybean can be caused by F. graminearum and other Fusarium spp. that are associated with Fusarium head blight (FHB) in cereals. Therefore, it was important to inquire whether Fusarium pathogens from soybean can cause disease in wheat and vice versa. Here, we investigated the FRR complex in Manitoba (Canada) from symptomatic plants, using both culture- and molecular-based methods. We developed a molecular diagnostic toolkit to detect and differentiate between several Fusarium spp. involved in FHB and FRR, then we evaluated cross-pathogenicity of selected Fusarium isolates collected from soybean and wheat, and the results indicate that isolates recovered from one host can infect the other host. Trichothecene production by selected Fusarium spp. was also analyzed chemically via liquid chromatography mass spectrometry in both soybean (root) and wheat (spike) tissues. Trichothecenes were also analyzed in soybean seeds from plants with FRR to check the potentiality of trichothecene translocation from infected roots to the seeds. All of the tested Fusarium isolates were capable of producing trichothecenes in wheat spikes and soybean roots, but no trichothecenes were detected in soybean seeds. This study provided evidence, for the first time, that trichothecenes were produced by several Fusarium spp. (F. cerealis, F. culmorum, and F. sporotrichioides) during FRR development in soybean.
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Affiliation(s)
- Mohamed Hafez
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, R3T2N2, Canada
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta, Canada
- Department of Botany and Microbiology, Faculty of Science, Suez University, Suez, Egypt
| | - Ahmed Abdelmagid
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, R3T2N2, Canada
- Department of Plant Pathology, Assiut University, Assiut, 71515, Egypt
| | - Reem Aboukhaddour
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Center, Lethbridge, Alberta, Canada
| | - Lorne R Adam
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, R3T2N2, Canada
| | - Fouad Daayf
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, R3T2N2, Canada
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