Turnip mosaic virus in oilseed rape activates networks of sRNA-mediated interactions between viral and host genomes
Virus-induced plant diseases in cultivated plants cause important damages in yield. Although the mechanisms of virus infection are intensely studied at the cell biology level, only little is known about the molecular dialog between the invading virus and the host genome. Here we describe a combinato...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
23 November 2020
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| In: |
Communications biology
Year: 2020, Jahrgang: 3, Pages: 1-16 |
| ISSN: | 2399-3642 |
| DOI: | 10.1038/s42003-020-01425-y |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1038/s42003-020-01425-y Verlag, lizenzpflichtig, Volltext: https://www.nature.com/articles/s42003-020-01425-y 
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| Verfasserangaben: | Nicolas Pitzalis, Khalid Amari, Stéfanie Graindorge, David Pflieger, Livia Donaire, Michael Wassenegger, César Llave & Manfred Heinlein |
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| 520 | |a Virus-induced plant diseases in cultivated plants cause important damages in yield. Although the mechanisms of virus infection are intensely studied at the cell biology level, only little is known about the molecular dialog between the invading virus and the host genome. Here we describe a combinatorial genome-wide approach to identify networks of sRNAs-guided post-transcriptional regulation within local Turnip mosaic virus (TuMV) infection sites in Brassica napus leaves. We show that the induction of host-encoded, virus-activated small interfering RNAs (vasiRNAs) observed in virus-infected tissues is accompanied by site-specific cleavage events on both viral and host RNAs that recalls the activity of small RNA-induced silencing complexes (RISC). Cleavage events also involve virus-derived siRNA (vsiRNA)-directed cleavage of target host transcripts as well as cleavage of viral RNA by both host vasiRNAs and vsiRNAs. Furthermore, certain coding genes act as virus-activated regulatory hubs to produce vasiRNAs for the targeting of other host genes. The observations draw an advanced model of plant-virus interactions and provide insights into the complex regulatory networking at the plant-virus interface within cells undergoing early stages of infection. | ||
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