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ArticleMolecular biology reports2025

Recombination, phylogenetic insights and co-existence dynamics of begomoviruses and satellite DNAs: implications for tomato viral disease management.

Murugesan Naveen, Pagalahalli Sankaran Shanmugam, Ramasamy Srinivasan, Mookiah Shanthi, Marimuthu Murugan, Kathiresan Sivagnanapazham, Kathithachalam Angappan, Ricardo Oliva, Gandhi Karthikeyan, Narayanan Manikanda Boopathi

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Article in Molecular biology reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Murugesan NaveenDepartment of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.ORCID http://orcid.org/0009-0000-8322-6520
Pagalahalli Sankaran ShanmugamDepartment of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India. shanmugam.ps@tnau.ac.in.ORCID http://orcid.org/0000-0001-9263-2133
Ramasamy SrinivasanSafe and Sustainable Value Chains Flagship Program, World Vegetable Center, 60 Yi Ming Liao, Shanhua, Tainan, 74151, Taiwan.ORCID http://orcid.org/0000-0002-8454-7331
Mookiah ShanthiDirectorate of Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.ORCID http://orcid.org/0000-0001-5737-4781
Marimuthu MuruganDepartment of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.ORCID http://orcid.org/0000-0002-7485-1153
Kathiresan SivagnanapazhamDepartment of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.ORCID http://orcid.org/0000-0002-0886-5792
Kathithachalam AngappanDepartment of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.ORCID http://orcid.org/0000-0001-5611-1277
Ricardo OlivaSafe and Sustainable Value Chains Flagship Program, World Vegetable Center, 60 Yi Ming Liao, Shanhua, Tainan, 74151, Taiwan.ORCID http://orcid.org/0000-0001-9517-5249
Gandhi KarthikeyanDepartment of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.ORCID http://orcid.org/0000-0002-7587-6643
Narayanan Manikanda BoopathiDepartment of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India. nmboopathi@tnau.ac.in.ORCID http://orcid.org/0000-0003-3615-3386

Funding

CGIAR Trust Fund A-2021-142
6 · The paper itself

Abstract

backgroundTomato leaf curl viral disease (ToLCV) is a major biotic stress, threatening tomato cultivation. However, limited information exists on the prevalence and diversity of ToLCV in Tamil Nadu, India and hence this study focused on identifying and characterizing such begomoviruses. METHODS AND

resultsTomato samples with infected symptoms were collected from major tomato-growing tracts of Tamil Nadu during 2023 to 2024 and subjected to polymerase chain reaction (PCR) using degenerate primers specific to ToLCV. Further, by employing rolling circle amplification (RCA), full-length sequences of viral genomes (∼2.7 kb), alphasatellites and betasatellites (∼1.35 kb each) were also obtained for three samples collected from different locations of Tamil Nadu (Dharmapuri (DPI-03), Krishnagiri (KGI-01) and Salem (SLM-01)). Diverse begomoviruses, including tomato leaf curl New Delhi virus (ToLCNDV), tomato leaf curl Palampur virus (ToLCPalV), tomato leaf curl Bangalore virus (ToLCBaV), and tomato leaf curl Gujarat virus (ToLCGUV) were identified in these three samples. Additionally, an alphasatellite (cotton leaf curl Multan alphasatellite, CLCuMuA), and two betasatellites (tomato leaf curl Bangalore betasatellite, ToLCBaB and tomato leaf curl Gujarat betasatellite, ToLCGUB) were also identified in KGI-01 and SLM-01. Evaluation of phylogenetic relationship and genetic variability revealed distinct clustering of begomoviruses and satellite sequences with high nucleotide diversity. In addition, recombinant analysis predicted inter- and intra- species recombination events.

conclusionThis study identified the co-occurrence of ToLCNDV with ToLCPalV, ToLCBaV with CLCuMuA and ToLCBaB, and ToLCGUV with ToLCGUB within the same plants. These findings underscore the diverse nature of the begomovirus-satellite complex infecting tomatoes in Tamil Nadu and emphasize the urgent need to develop effective plant protection strategies.

Indexed as

BegomovirusDNA, SatellitePlant DiseasesSolanum lycopersicumDNA, ViralGenome, ViralIndiaPhylogenyRecombination, GeneticDNA, SatelliteDNA, ViralBegomovirusGenetic diversitySolanum lycopersicumToLCBaVToLCGUVToLCNDVToLCPalV

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.