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Cell-Type Specific miRNA Regulatory Network Responses to ABA Stress Revealed by Time Series Transcriptional Atlases in Arabidopsis

文献类型: 外文期刊

作者: Gao, Zhaoxu 1 ; Su, Yanning 1 ; Jiao, Guanzhong 1 ; Lou, Zhiying 4 ; Chang, Le 1 ; Yu, Renbo 5 ; Xu, Chao 1 ; Han, Xue 4 ; Wang, Zejia 1 ; Li, Jian 4 ; Deng, Xing Wang 1 ; He, Hang 1 ;

作者机构: 1.Peking Univ, Sch Adv Agr Sci, State Key Lab Prot & Plant Gene Res, Beijing 100871, Peoples R China

2.Peking Univ, Sch Life Sci, State Key Lab Prot & Plant Gene Res, Beijing 100871, Peoples R China

3.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Beijing 100081, Peoples R China

4.Peking Univ, Inst Adv Agr Sci, Shandong Lab Adv Agr Sci Weifang, Shandong 261325, Peoples R China

5.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Peoples R China

关键词: cell-type specific; crosstalk; dynamic; M-FFLs; miRNAs; network; rapid; scRNA-seq

期刊名称:ADVANCED SCIENCE ( 影响因子:14.1; 五年影响因子:15.6 )

ISSN:

年卷期: 2025 年 12 卷 9 期

页码:

收录情况: SCI

摘要: In plants, microRNAs (miRNAs) participate in complex gene regulatory networks together with the transcription factors (TFs) in response to biotic and abiotic stresses. To date, analyses of miRNAs-induced transcriptome remodeling are at the whole plant or tissue levels. Here, Arabidopsis's ABA-induced single-cell RNA-seq (scRNA-seq) is performed at different stages of time points-early, middle, and late. Single-cell level primary miRNAs (pri-miRNAs) atlas supported the rapid, dynamic, and cell-type specific miRNA responses under ABA treatment. MiRNAs respond rapidly and prior to target gene expression dynamics, and these rapid response miRNAs are highly cell-type specific, especially in mesophyll and vascular cells. MiRNA-TF-mRNA regulation modules are identified by identifying miRNA-contained feed-forward loops (M-FFLs) in the regulatory network, and regulatory networks with M-FFLs have higher co-expression and clustering coefficient (CC) values than those without M-FFLs, suggesting the hub role of miRNAs in regulatory networks. The cell-type-specific M-FFLs are regulated by these hub miRNAs rather than TFs through sc-RNA-seq network analysis. MiR858a-FBH3-MYB module inhibited the expression of MYB63 and MYB20, which related to the formation of plant secondary wall and the production of lignin, through M-FFL specifically in vascular. These results can provide prominent insights into miRNAs' dynamic and cell-type-specific roles in plant development and stress responses.

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