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| Cauliflower mosaic virus | |
|---|---|
| Name | Cauliflower mosaic virus |
| Virus group | VII |
| Familia | Caulimoviridae |
| Genus | Caulimovirus |
| Species | Cauliflower mosaic virus |
Cauliflower mosaic virus is a double-stranded DNA plant virus that infects members of the Brassicaceae and related families, causing mosaic symptoms and yield loss in cruciferous crops. First characterized in European horticulture, its study has involved researchers from institutions such as University of Cambridge, John Innes Centre, Max Planck Society, Cold Spring Harbor Laboratory, and National Institutes of Health. The virus has been a model for molecular virology, plant pathology, and recombinant DNA research intersecting with work at European Molecular Biology Laboratory, Massachusetts Institute of Technology, University of California, Berkeley, Howard Hughes Medical Institute, and Salk Institute.
The virus is classified within the family Caulimoviridae and genus Caulimovirus, placed in virus group VII alongside other pararetroviruses such as Banana streak virus and Petunia vein clearing virus. Taxonomic decisions have been guided by the International Committee on Taxonomy of Viruses and comparisons with taxa studied at World Health Organization collaborative centers and curated in databases maintained by European Bioinformatics Institute and National Center for Biotechnology Information. Phylogenetic analyses reference methodologies from labs at University of Oxford, University of Edinburgh, and University of Tokyo.
Particles are non-enveloped icosahedral capsids described in electron micrographs from researchers at EMBL-EBI and Lawrence Berkeley National Laboratory, typically ~50–70 nm in diameter. The circular double-stranded DNA genome (~8 kb) encodes a polycistronic 35S RNA and a 19S RNA promoter characterized in studies at Stanford University, Yale University, University of Glasgow, and University of Wisconsin–Madison. Genes are designated ORFs I–VI and the pregenomic promoter; proteins include movement protein, capsid protein, and reverse transcriptase-related functions analogous to enzymes studied at Max Planck Institute for Biophysical Chemistry and Cold Spring Harbor Laboratory.
Replication proceeds via reverse transcription of a pregenomic 35S RNA, paralleling mechanisms investigated in retrovirology at Pasteur Institute, European Molecular Biology Laboratory, and Harvard Medical School. Entry, uncoating, and transport to the nucleus involve host factors whose roles were elucidated in collaborations with Carnegie Institution for Science, Rothamsted Research, and John Innes Centre. Translation of the polycistronic RNA uses leaky scanning and reinitiation strategies analyzed in laboratories at University of Cambridge, University of Oxford, and Imperial College London. Viral assembly and movement depend on interactions with plant cellular machinery characterized by groups at University of California, Davis, University of Minnesota, and University of British Columbia.
Transmission is primarily by sap inoculation and by aphid vectors in a non-circulative manner, implicating species such as Myzus persicae and studied in entomology units at Rothamsted Research, CSIRO, and Agricultural Research Service. Host range includes crops and wild species within Brassicaceae, with documented infections in cultivars investigated at Wageningen University, INRAE, and Universidad Politécnica de Madrid. Epidemiological surveys have been reported in the contexts of plant health programs at Food and Agriculture Organization, European Commission, and national plant protection organizations like USDA and DEFRA.
Infected plants typically develop mosaic patterns, chlorosis, stunting, and malformation of leaves and inflorescences; symptom descriptions derive from pathology studies at Royal Botanic Gardens, Kew, Scottish Crop Research Institute, and Agricultural University of Athens. Severity varies with cultivar, environmental conditions, and co-infections studied by teams at University of Illinois at Urbana-Champaign, Cornell University, and University of Florida. Yield impacts and economic assessments have been evaluated in reports linked to FAO and regional extension services at University of Nebraska–Lincoln and Kansas State University.
Diagnostic methods include electron microscopy developed at Lawrence Livermore National Laboratory, enzyme-linked immunosorbent assays standardized with reagents from Agdia and protocols refined at John Innes Centre, nucleic acid detection using PCR and quantitative PCR approaches from Cold Spring Harbor Laboratory and European Molecular Biology Laboratory, and high-throughput sequencing initiatives coordinated with Wellcome Trust Sanger Institute and Genome Canada. Serological tests, tissue printing, and in situ hybridization have been applied in diagnostics labs at University of Alberta, University of Melbourne, and Instituto Nacional de Tecnología Agropecuaria.
Control strategies emphasize vector control, use of resistant cultivars developed by breeding programs at CIMMYT, IRRI, and John Innes Centre, sanitation, and phytosanitary measures coordinated by International Plant Protection Convention frameworks and national agencies such as USDA APHIS and Canadian Food Inspection Agency. Integrated pest management combining biological control research from IITA, chemical controls evaluated by Syngenta or BASF, and cultural practices promoted by extension services at University of California Cooperative Extension and Ohio State University Extension reduce spread. Transgenic approaches and RNA interference strategies were explored in labs at University of Wisconsin–Madison, ETH Zurich, and University of Tokyo.
The virus was first described in European horticulture and gained prominence through molecular biology breakthroughs during the development of plant transformation and expression systems at Max Planck Society, John Innes Centre, Cambridge University Press-linked publications, and laboratory innovations at Cold Spring Harbor Laboratory. Its 35S promoter became a cornerstone in transgenic plant research utilized by laboratories at Monsanto, DuPont, Salk Institute, and academic groups at University of California, Berkeley and Massachusetts Institute of Technology. Research on the virus has informed broader studies in virology, gene regulation, and biotechnology across institutions including Wellcome Trust, Howard Hughes Medical Institute, and European Research Council.
Category:Caulimoviridae