ArticleProceedings of the National Academy of Sciences of the United States of America2014
Tomato yellow leaf curl virus resistance by Ty-1 involves increased cytosine methylation of viral genomes and is compromised by cucumber mosaic virus infection.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers.
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93 citing papers in PubMed, 166 citations in OpenAlex.
- Leaf Curl Disease Resistance Landscaping in Homozygous Ty-Gene Donor Tomato Genotypes Using a Robust Disease Scoring System and Indexing of Begomoviruses Under Natural Epiphytotic Conditions.Current microbiology · 2026Article
- A dominant mutation in tomato DNA POLYMERASE DELTA 1 causes geminivirus DNA replication catastrophe.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Article
- Advances in Plant Antiviral RNAi: From Host DCLs/RDRs to Diversified Viral Counteracting Strategies.Viruses · 2026Review
- Elucidation of theFrontiers in plant science · 2026Article
- Epigenetic and Epitranscriptomic Antiviral Responses in Plants for Disease Management.Viruses · 2025Review
- A TIR-NLR gene from Arabidopsis Pla-1 confers resistance to geminivirus infection.The Plant journal : for cell and molecular biology · 2025Article
- Methylation of mycovirus DNA is mediated by the RNAi machinery in vegetative hyphae of Fusarium graminearum.Nucleic acids research · 2025Article
- The tomato gene Ty-6, encoding DNA polymerase delta subunit 1, confers broad resistance to Geminiviruses.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Characterisation of a Betasatellite Associated With Tomato Yellow Leaf Curl Guangdong Virus and Discovery of an Unusual Modulation of Virus Infection Associated With C4 Protein.Molecular plant pathology · 2025Article
- Marker assisted pyramiding of major resistance genes of tomato leaf curl and late blight diseases for stabilising tomato production.Physiology and molecular biology of plants : an international journal of functional plant biology · 2025Article
- Resistance gene Ty-1 restricts TYLCV infection in tomato by increasing RNA silencing.Virology journal · 2024Article
- Cy-1, a major QTL for tomato leaf curl New Delhi virus resistance, harbors a gene encoding a DFDGD-Class RNA-dependent RNA polymerase in cucumber (Cucumis sativus).BMC plant biology · 2024Article
- Review
- Article
- Exploring the source of TYLCV resistance inFrontiers in plant science · 2024Article
- Transcriptome and small RNAome profiling uncovers how a recombinant begomovirus evades RDRγ-mediated silencing of viral genes and outcompetes its parental virus in mixed infection.PLoS pathogens · 2024Article
- Advances and Prospects of Virus-Resistant Breeding in Tomatoes.International journal of molecular sciences · 2023Review
- DNA cytosine methylation dynamics and functional roles in horticultural crops.Horticulture research · 2023Article
- Infection Defects of RNA and DNA Viruses Induced by Antiviral RNA Interference.Microbiology and molecular biology reviews : MMBR · 2023Review
33 more citing papers are in PubMed but not listed here.
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tomato yellow leaf curl virus (TYLCV) and related begomoviruses are a major threat to tomato production worldwide and, to protect against these viruses, resistance genes from different wild tomato species are introgressed. Recently, the Ty-1 resistance gene was identified, shown to code for an RNA-dependent RNA polymerase and to be allelic with Ty-3. Here we show that upon TYLCV challenging of resistant lines carrying Ty-1 or Ty-3, low virus titers were detected concomitant with the production of relatively high levels of siRNAs whereas, in contrast, susceptible tomato Moneymaker (MM) revealed higher virus titers but lower amounts of siRNAs. Comparative analysis of the spatial genomic siRNA distribution showed a consistent and subtle enrichment for siRNAs derived from the V1 and C3 genes in Ty-1 and Ty-3. In plants containing Ty-2 resistance the virus was hardly detectable, but the siRNA profile resembled the one observed in TYLCV-challenged susceptible tomato (MM). Furthermore, a relative hypermethylation of the TYLCV V1 promoter region was observed in genomic DNA collected from Ty-1 compared with that from (MM). The resistance conferred by Ty-1 was also effective against the bipartite tomato severe rugose begomovirus, where a similar genome hypermethylation of the V1 promoter region was discerned. However, a mixed infection of TYLCV with cucumber mosaic virus compromised the resistance. The results indicate that Ty-1 confers resistance to geminiviruses by increasing cytosine methylation of viral genomes, suggestive of enhanced transcriptional gene silencing. The mechanism of resistance and its durability toward geminiviruses under natural field conditions is discussed.
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