WUSCHEL triggers innate antiviral immunity in plant stem cells
Building a safe space for stem cells - The meristem, the collection of stem cells that builds plants, is resistant to viral infection. Wu et al. now show that WUSCHEL, a transcription factor that helps to sustain stem cell production in the shoot apical meristem of Arabidopsis, also protects that st...
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| Hauptverfasser: | , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
09 October 2020
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| In: |
Science
Year: 2020, Jahrgang: 370, Heft: 6513, Pages: 227-231 |
| ISSN: | 1095-9203 |
| DOI: | 10.1126/science.abb7360 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1126/science.abb7360 Verlag, lizenzpflichtig, Volltext: https://science.sciencemag.org/content/370/6513/227 
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| Verfasserangaben: | Haijun Wu, Xiaoya Qu, Zhicheng Dong, Linjie Luo, Chen Shao, Joachim Forner, Jan U. Lohmann, Meng Su, Mengchu Xu, Xiaobin Liu, Lei Zhu, Jian Zeng, Sumei Liu, Zhaoxia Tian, Zhong Zhao |
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| 520 | |a Building a safe space for stem cells - The meristem, the collection of stem cells that builds plants, is resistant to viral infection. Wu et al. now show that WUSCHEL, a transcription factor that helps to sustain stem cell production in the shoot apical meristem of Arabidopsis, also protects that stem cell domain from viruses. WUSCHEL inhibited viral protein synthesis by repressing methyltransferases that regulate ribosomal RNA processing and ribosome stability. - Science, this issue p. 227 - Stem cells in plants constantly supply daughter cells to form new organs and are expected to safeguard the integrity of the cells from biological invasion. Here, we show how stem cells of the Arabidopsis shoot apical meristem and their nascent daughter cells suppress infection by cucumber mosaic virus (CMV). The stem cell regulator WUSCHEL responds to CMV infection and represses virus accumulation in the meristem central and peripheral zones. WUSCHEL inhibits viral protein synthesis by repressing the expression of plant S-adenosyl-l-methionine-dependent methyltransferases, which are involved in ribosomal RNA processing and ribosome stability. Our results reveal a conserved strategy in plants to protect stem cells against viral intrusion and provide a molecular basis for WUSCHEL-mediated broad-spectrum innate antiviral immunity in plants. - Manipulation of protein synthesis restricts viral invasion in stem cells of the Arabidopsis shoot apical meristem. - Manipulation of protein synthesis restricts viral invasion in stem cells of the Arabidopsis shoot apical meristem. | ||
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