ArticleBMC plant biology2025
Regulation of co-translational mRNA decay by PAP and DXO1 in Arabidopsis.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- mNature plants · 2026Article
- The Arabidopsis deNADding Enzyme DXO1 Modulates the Plant Immunity Response.Plant, cell & environment · 2026Article
- RNA interference and turnover in plants -a complex partnership.Frontiers in plant science · 2025Review
- Small RNA, big defence: Early epigenetic responses to genetic invasion.Quantitative plant biology · 2025Review
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
backgroundmRNA decay is central in the regulation of mRNA homeostasis in the cell. The recent discovery of a co-translational mRNA decay pathway (also called CTRD) has changed our understanding of the mRNA decay process. This pathway has emerged as an evolutionarily conversed mechanism essential for specific physiological processes in eukaryotes, especially in plants. In Arabidopsis, this pathway is targeted mainly by the exoribonuclease XRN4. However, the details of the molecular regulation of this pathway are still unclear.
resultsIn this study, we first tested the role of the 3'-phosphoadenosine 5'-phosphate (PAP), an inhibitor of exoribonucleases in the regulation of CTRD. Using 5'Pseq approach, we discovered that FRY1 inactivation impaired XRN4-CTRD activity. Based on this finding, we demonstrated that exogenous PAP treatment stabilizes CTRD mRNA targets. Furthermore, we also tested the implication of the exoribonuclease DXO1 in CTRD regulation. We found that DXO1, another exoribonuclease sensitive to PAP, is also involved in the CTRD pathway, probably by targeting NAD
conclusionsOur study provides further insights into the regulation of CTRD in Arabidopsis and demonstrates that other exoribonucleases can be implicated in this pathway.
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