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Ghorbani A. Genetic analysis of tomato brown rugose fruit virus reveals evolutionary adaptation and codon usage bias patterns. Sci Rep 2024; 14:21281. [PMID: 39261582 PMCID: PMC11390899 DOI: 10.1038/s41598-024-72298-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 09/05/2024] [Indexed: 09/13/2024] Open
Abstract
Tomato brown rugose fruit virus (ToBRFV) poses a significant threat to tomato production worldwide, prompting extensive research into its genetic diversity, evolutionary dynamics, and adaptive strategies. In this study, we conducted a comprehensive analysis of ToBRFV at the codon level, focusing on codon usage bias, selection pressures, and evolutionary patterns across multiple genes. Our analysis revealed distinct patterns of codon usage bias and selection pressures within the ToBRFV genome, with varying levels of genetic diversity and evolutionary constraints among different genes. We observed a transition/transversion bias of 2.07 across the entire ToBRFV genome, with the movement protein (MP) gene exhibiting the highest transition/transversion bias and SNP density, suggesting potential evolutionary pressures or a higher mutation rate in this gene. Furthermore, our study identified episodic positive selection primarily in the MP gene, highlighting specific codons subject to adaptive changes in response to host immune pressures or environmental factors. Comparative analysis of codon usage bias in the coat protein (CP) and RNA-dependent RNA polymerase (RdRp) genes revealed gene-specific patterns reflecting functional constraints and adaptation to the host's translational machinery. Our findings provide valuable insights into the molecular mechanisms driving ToBRFV evolution and adaptation, with implications for understanding viral pathogenesis, host-virus interactions, and the development of control strategies. Future research directions include further elucidating the functional significance of codon usage biases, exploring the role of episodic positive selection in viral adaptation, and leveraging these insights to inform the development of effective antiviral strategies and crop protection measures.
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Affiliation(s)
- Abozar Ghorbani
- Nuclear Agriculture Research School, Nuclear Science and Technology Research Institute (NSTRI), Karaj, Iran.
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Nash D, Ellmen I, Knapp JJ, Menon R, Overton AK, Cheng J, Lynch MDJ, Nissimov JI, Charles TC. A Novel Tiled Amplicon Sequencing Assay Targeting the Tomato Brown Rugose Fruit Virus (ToBRFV) Genome Reveals Widespread Distribution in Municipal Wastewater Treatment Systems in the Province of Ontario, Canada. Viruses 2024; 16:460. [PMID: 38543825 PMCID: PMC10974707 DOI: 10.3390/v16030460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 05/23/2024] Open
Abstract
Tomato Brown Rugose Fruit Virus (ToBRFV) is a plant pathogen that infects important Solanaceae crop species and can dramatically reduce tomato crop yields. The ToBRFV has rapidly spread around the globe due to its ability to escape detection by antiviral host genes which confer resistance to other tobamoviruses in tomato plants. The development of robust and reproducible methods for detecting viruses in the environment aids in the tracking and reduction of pathogen transmission. We detected ToBRFV in municipal wastewater influent (WWI) samples, likely due to its presence in human waste, demonstrating a widespread distribution of ToBRFV in WWI throughout Ontario, Canada. To aid in global ToBRFV surveillance efforts, we developed a tiled amplicon approach to sequence and track the evolution of ToBRFV genomes in municipal WWI. Our assay recovers 95.7% of the 6393 bp ToBRFV RefSeq genome, omitting the terminal 5' and 3' ends. We demonstrate that our sequencing assay is a robust, sensitive, and highly specific method for recovering ToBRFV genomes. Our ToBRFV assay was developed using existing ARTIC Network resources, including primer design, sequencing library prep, and read analysis. Additionally, we adapted our lineage abundance estimation tool, Alcov, to estimate the abundance of ToBRFV clades in samples.
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Affiliation(s)
- Delaney Nash
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
- Metagenom Bio Life Science Inc., Waterloo, ON N2L 5V4, Canada
| | - Isaac Ellmen
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
- Metagenom Bio Life Science Inc., Waterloo, ON N2L 5V4, Canada
| | - Jennifer J. Knapp
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
| | - Ria Menon
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
| | - Alyssa K. Overton
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
| | - Jiujun Cheng
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
- Metagenom Bio Life Science Inc., Waterloo, ON N2L 5V4, Canada
| | - Michael D. J. Lynch
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
- Metagenom Bio Life Science Inc., Waterloo, ON N2L 5V4, Canada
| | - Jozef I. Nissimov
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
| | - Trevor C. Charles
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (I.E.); (J.J.K.); (R.M.); (A.K.O.); (J.C.); (M.D.J.L.); (J.I.N.); (T.C.C.)
- Metagenom Bio Life Science Inc., Waterloo, ON N2L 5V4, Canada
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Yilmaz S, Batuman O. Co-Infection of Tomato Brown Rugose Fruit Virus and Pepino Mosaic Virus in Grocery Tomatoes in South Florida: Prevalence and Genomic Diversity. Viruses 2023; 15:2305. [PMID: 38140546 PMCID: PMC10748365 DOI: 10.3390/v15122305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
Tomato brown rugose fruit virus (ToBRFV) is an economically important seed and mechanically transmitted pathogen of significant importance to tomato production around the globe. Synergistic interaction with pepino mosaic virus (PepMV), another seed and mechanically transmitted virus, and long-distance dissemination of these two viruses via contaminated tomato fruits through global marketing were previously suggested. In 2019, we detected both viruses in several grocery store-purchased tomatoes in South Florida, USA. In this study, to identify potential sources of inoculum, co-infection status, prevalence, and genomic diversity of these viruses, we surveyed symptomatic and asymptomatic imported tomatoes sold in ten different groceries in four cities in South Florida. According to the product labels, all collected tomatoes originated from Canada, Mexico, or repacking houses in the United States. With high prevalence levels, 86.5% of the collected samples were infected with ToBRFV, 90% with PepMV alone, and 73% were mixed-infected. The phylogenetic study showed no significant correlations between ToBRFV genomic diversity and the tomato label origin. Phylogenetic analysis of PepMV isolates revealed the prevalence of the PepMV strains, Chilean (CH2) and recombinant (US2). The results of this study highlight the continual presence of PepMV and ToBRFV in imported tomatoes in Florida grocery stores.
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Affiliation(s)
| | - Ozgur Batuman
- Southwest Florida Research and Education Center, Department of Plant Pathology, University of Florida, Immokalee, FL 34142, USA;
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Esmaeilzadeh F, Santosa AI, Çelik A, Koolivand D. Revealing an Iranian Isolate of Tomato Brown Rugose Fruit Virus: Complete Genome Analysis and Mechanical Transmission. Microorganisms 2023; 11:2434. [PMID: 37894095 PMCID: PMC10608917 DOI: 10.3390/microorganisms11102434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/11/2023] [Accepted: 09/17/2023] [Indexed: 10/29/2023] Open
Abstract
An analysis of the complete genome sequence of a novel isolate of tomato brown rugose fruit virus (ToBRFV) obtained from tomatoes in Iran and named ToBRFV-Ir is presented in this study. Comprehensive phylogenetic analysis utilizing key viral proteins, including 126 KDa, 183 KDa, movement protein (MP), and coat protein (CP), as well as the complete genome sequence, classified ToBRFV-Ir and 65 isolates from GenBank into three distinct clades. Notably, genetic diversity assessment revealed relatively low variability among the isolates, irrespective of their geographical or clade affiliation. Natural selection analysis based on the complete genome sequence showed that dN/dS values were consistently <1, indicating the prevailing role of negative selection across all populations. Analyses using the Recombination Detection Program and SplitsTree found no evidence of recombination events or signals in the complete genome sequence of the tested isolates. Thus, these results suggest that the genetic composition of ToBRFV remains stable without significant genetic exchange or recombination events occurring. A simple arithmetic comparison of the patristic distances and dates suggested that the time to the most recent common ancestor (TMRCA) of the ToBRFV populations is approximately 0.8 up to 2.7 with the closest tobamoviruses. An evolutionary study of the tested isolates from various countries based on the complete genome suggests Peruvian ancestry. The ToBRF-Ir isolate was successfully transmitted through mechanical inoculations to Solanum lycopersicum and Nicotiana rustica. These findings shed light on the genetic dynamics and transmission mechanisms of ToBRFV, providing valuable insights into its molecular characteristics and potential spread among susceptible plant species.
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Affiliation(s)
- Fereshteh Esmaeilzadeh
- Department of Plant Protection, Faculty of Agriculture, University of Zanjan, Zanjan 45371-38791, Iran (D.K.)
| | - Adyatma Irawan Santosa
- Department of Plant Protection, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Ali Çelik
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant İzzet Baysal University, Bolu 14030, Turkey
| | - Davoud Koolivand
- Department of Plant Protection, Faculty of Agriculture, University of Zanjan, Zanjan 45371-38791, Iran (D.K.)
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Salem NM, Jewehan A, Aranda MA, Fox A. Tomato Brown Rugose Fruit Virus Pandemic. ANNUAL REVIEW OF PHYTOPATHOLOGY 2023; 61:137-164. [PMID: 37268006 DOI: 10.1146/annurev-phyto-021622-120703] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Tomato brown rugose fruit virus (ToBRFV) is an emerging tobamovirus. It was first reported in 2015 in Jordan in greenhouse tomatoes and now threatens tomato and pepper crops around the world. ToBRFV is a stable and highly infectious virus that is easily transmitted by mechanical means and via seeds, which enables it to spread locally and over long distances. The ability of ToBRFV to infect tomato plants harboring the commonly deployed Tm resistance genes, as well as pepper plants harboring the L resistance alleles under certain conditions, limits the ability to prevent damage from the virus. The fruit production and quality of ToBRFV-infected tomato and pepper plants can be drastically affected, thus significantly impacting their market value. Herein, we review the current information and discuss the latest areas of research on this virus, which include its discovery and distribution, epidemiology, detection, and prevention and control measures, that could help mitigate the ToBRFV disease pandemic.
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Affiliation(s)
- Nida' M Salem
- Department of Plant Protection, School of Agriculture, The University of Jordan, Amman, Jordan;
| | - Ahmad Jewehan
- Applied Plant Genomics Group, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
| | - Miguel A Aranda
- Centro de Edafología y Biología Aplicada del Segura, Consejo Superior de Investigaciones Científicas (CSIC), Murcia, Spain
| | - Adrian Fox
- Fera Science, Sand Hutton, York, United Kingdom
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
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Lyu J, Yang Y, Sun X, Jiang S, Hong H, Zhu X, Liu Y. Genetic Variability and Molecular Evolution of Tomato Mosaic Virus Populations in Three Northern China Provinces. Viruses 2023; 15:1617. [PMID: 37515303 PMCID: PMC10383530 DOI: 10.3390/v15071617] [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: 05/29/2023] [Revised: 07/17/2023] [Accepted: 07/22/2023] [Indexed: 07/30/2023] Open
Abstract
RNA viruses tend to mutate during transmission and host infection, which is critical to viral adaptation and evolution. Tomato mosaic virus (ToMV) is a member of the genus Tobamovirus (family Virgaviridae) and an economically important virus with detrimental effects on tomatoes worldwide. Although the ToMV gene sequences have been completed in China, their genetic diversity and population structure remain unclear. We collected 425 tomato samples from tomato-growing areas in three northern Chinese provinces 2016. Reverse transcription PCR results showed that the average incidence of the virus in the field samples was 67.15%, and ToMV was detected in all test areas. The analysis of ToMV single nucleotide polymorphisms in China showed that ToMV was evolutionarily conserved, and the variation in the whole genome was uneven. Pairwise identity analysis showed significant variability in genome sequences among ToMV strains with genomic nucleotide identities of 73.2-99.6%. The ToMV population in the northern Chinese provinces had purification and selection functions, which were beneficial in the evolution of the ToMV population. Although there has been some distribution of ToMV strains in China, the virus was generally stabilized as a uniform strain under the pressure of purification selection. Our findings show how to monitor the prevalent strains of ToMV and their virulence in China and provide useful information for its prevention and control.
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Affiliation(s)
- Jinfu Lyu
- Shandong Provincial University Laboratory for Protected Horticulture, Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang 262700, China
| | - Yuanyuan Yang
- Shandong Provincial University Laboratory for Protected Horticulture, Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang 262700, China
| | - Xiaohui Sun
- Shandong Province Key Laboratory of Plant Virology, Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shanshan Jiang
- Shandong Province Key Laboratory of Plant Virology, Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Hao Hong
- Shandong Province Key Laboratory of Plant Virology, Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Xiaoping Zhu
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, China
| | - Yongguang Liu
- Shandong Provincial University Laboratory for Protected Horticulture, Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang 262700, China
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