Characterization of chromatin accessibility and gene expression reveal the key genes involved in cotton fiber elongation
文献类型: 外文期刊
作者: Chen, Guoquan 1 ; Liu, Zhao 1 ; Li, Shengdong 1 ; Liu, Le 1 ; Lu, Lili 2 ; Wang, Zhi 1 ; Mendu, Venugopal 4 ; Li, Fuguang 1 ; Yang, Zuoren 1 ;
作者机构: 1.Zhengzhou Univ, Sch Agr Sci, Natl Key Lab Cotton Biobreeding & Integrated Utili, Zhengzhou Res Base, Zhengzhou 450001, Henan, Peoples R China
2.Chinese Acad Agr Sci, Inst Cotton Res, Natl Key Lab Cotton Biobreeding & Integrated Utili, Anyang, Henan, Peoples R China
3.Hainan Yazhou Bay Seed Lab, Sanya, Hainan, Peoples R China
4.Montana State Univ, Dept Plant Sci & Plant Pathol, Bozeman, MT USA
5.Xinjiang Acad Agr & Reclamat Sci, Xinjiang Prod & Construct Grp Key Lab Crop Germpla, Biotechnol Res Inst, Urumqi, Xinjiang, Peoples R China
期刊名称:PHYSIOLOGIA PLANTARUM ( 影响因子:6.4; 五年影响因子:5.9 )
ISSN: 0031-9317
年卷期: 2023 年 175 卷 4 期
页码:
收录情况: SCI
摘要: Cotton (Gossypium hirsutum L.) is an important economic crop, and cotton fiber is one of the longest plant cells, which provides an ideal model for the study of cell elongation and secondary cell wall synthesis. Cotton fiber length is regulated by a variety of transcription factors (TF) and their target genes; however, the mechanism of fiber elongation mediated by transcriptional regulatory networks is still unclear to a large extent. Here, we used a comparative assay for transposase-accessible chromatin with high-throughput sequencing (ATAC-seq) assay and RNA-seq analysis to identify fiber elongation transcription factors and genes using the short-fiber mutant ligon linless-2 (Li-2) and wild type (WT). A total of 499 differential target genes were identified and GO analysis shows that differential genes are mainly involved in plant secondary wall synthesis and microtubule-binding processes. Analysis of the genomic regions preferentially accessible (Peak) has identified a number of overrepresented TF-binding motifs, highlighting sets of TFs that are important for cotton fiber development. Using ATAC-seq and RNA-seq data, we have constructed a functional regulatory network of each TF regulatory target gene and also the network pattern of TF regulating differential target genes. Further, to obtain the genes related to fiber length, the differential target genes were combined with FLGWAS data to identify the genes highly related to fiber length. Our work provides new insights into cotton fiber elongation.
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