Nat PlantsJClub
Regulation of the 22-nt antiviral silencing pathway in tomato by two RNA viruses.
Nature Plants · · Journal Article
Li, Li + more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
TMV and TBSV activate tomato DCL2b transcription via Dof16 and simultaneously relocalize DCL2b to the cytoplasm, linked to reduced Tyr69 phosphorylation and weaker nuclear importin-α interaction.
- Why it matters: The 22-nt antiviral silencing pathway is amplified by secondary sRNAs, but how tomato coordinates DCL2b activation and avoids off-target effects during virus infection was unclear.
- What they did: The study examined virus-driven changes in DCL2b and MIR6026 transcription, DCL2b subcellular relocalization, pri-miR6026 processing, and DCL2b phosphorylation at Tyr69, including comparison with Arabidopsis DCL2.
- The result: Virus infection promotes cytoplasmic DCL2b relocalization that prevents pri-miR6026 maturation into miR6026 and weakens nuclear localization, enabling antiviral amplification while minimizing host gene disruption.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.