ArticleMobile DNA2022
Comprehensive analysis of both long and short read transcriptomes of a clonal and a seed-propagated model species reveal the prerequisites for transcriptional activation of autonomous and non-autonomous transposons in plants.
Article in Mobile DNA, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 5 citations in OpenAlex.
- In silico genome-wide analysis of the growth-regulating factor gene family and their expression profiling in Vitis vinifera under biotic stress.Cell biochemistry and biophysics · 2025Article
- Direct RNA sequencing in plants: Practical applications and future perspectives.Plant communications · 2024Review
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2 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundTransposable element (TE) transcription is a precursor to its mobilisation in host genomes. However, the characteristics of expressed TE loci, the identification of self-competent transposon loci contributing to new insertions, and the genomic conditions permitting their mobilisation remain largely unknown.
resultsUsing Vitis vinifera embryogenic callus, we explored the impact of biotic stressors on transposon transcription through the exposure of the callus to live cultures of an endemic grapevine yeast, Hanseniaspora uvarum. We found that only 1.7-2.5% of total annotated TE loci were transcribed, of which 5-10% of these were full-length, and the expressed TE loci exhibited a strong location bias towards expressed genes. These trends in transposon transcription were also observed in RNA-seq data from Arabidopsis thaliana wild-type plants but not in epigenetically compromised Arabidopsis ddm1 mutants. Moreover, differentially expressed TE loci in the grapevine tended to share expression patterns with co-localised differentially expressed genes. Utilising nanopore cDNA sequencing, we found a strong correlation between the inclusion of intronic TEs in gene transcripts and the presence of premature termination codons in these transcripts. Finally, we identified low levels of full-length transcripts deriving from structurally intact TE loci in the grapevine model.
conclusionOur observations in two disparate plant models representing clonally and seed propagated plant species reveal a closely connected transcriptional relationship between TEs and co-localised genes, particularly when epigenetic silencing is not compromised. We found that the stress treatment alone was insufficient to induce large-scale full-length transcription from structurally intact TE loci, a necessity for non-autonomous and autonomous mobilisation.
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