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Differentiation Trajectory of Virus-Induced Tumour Cells in Rice Revealed by Single-Cell RNA Sequencing

文献类型： 外文期刊

作者： Wu, Nan 1 ; Gan, Lu 1 ; Suo, Qingqing 1 ; Yang, Fei 2 ; Liu, Wenwen 1 ; Wang, Xifeng 1 ; Jin, Huaibing 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China

2.Hebei Acad Agr & Forestry Sci, Inst Plant Protect, Baoding, Peoples R China

关键词： cell differentiation; differentiation trajectory; RBSDV; single-cell RNA sequencing; virus-induced tumours

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：10.5； 五年影响因子：12.4 ）

ISSN： 1467-7644

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Many plant viruses trigger abnormal differentiation and development of host cells, causing distinct symptoms. Here, in a single-cell RNA sequence analysis, we find transcriptional heterogeneity between cells from rice leaf sheaths that are infected with rice black streaked dwarf virus (RBSDV) and from those that are virus-free. Using 106 973 cells, we construct a single-cell transcriptome atlas with 12 cell types and find that parenchyma and vascular parenchyma cells are the two major cell types affected by RBSDV. Notably, in RBSDV-infected plants, virus-induced tumours are observed to proliferate and show to differentiate from vascular parenchyma cells in a pseudotime analysis. During the differentiation of RBSDV-induced tumour cells, genes that involved in such processes as nucleosome assembly and chromatin remodeling are upregulated, and those involved in photosynthesis and energy metabolism are downregulated. A gene module of DGP1-GLK1-LHCBs that functions in regulating chloroplast development is repressed in the process of tumour cell formation. Moreover, a jasmonate-inducible pathogenesis-related gene, JiPR10, is expressed specifically in RBSDV-induced tumour cells and endows host resistance to RBSDV by inhibiting the proliferation and expansion of tumours. Our cell-type-specific atlas for plant responses to viral infection provides a valuable resource for further study of virus-induced abnormal development of host plants.

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