Genome-wide profiling of histone H3 lysine 27 trimethylation and its modification in response to chilling stress in grapevine leaves
文献类型: 外文期刊
作者: Zhu, Zhenfei 1 ; Li, Qingyun 1 ; Gichuki, Duncan Kiragu 1 ; Hou, Yujun 1 ; Liu, Yuanshuang 1 ; Zhou, Huimin 1 ; Xu, Chen 1 ; Fang, Linchuan 1 ; Gong, Linzhong 4 ; Zheng, Beibei 1 ; Duan, Wei 3 ; Fan, Peige 3 ; Wang, Qingfeng 1 ; Xin, Haiping 1 ;
作者机构: 1.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty Ag, Core Bot Gardens, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China
2.Chinese Acad Sci, Sino Africa Joint Res Ctr, Wuhan 430074, Hubei, Peoples R China
3.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China
4.Hubei Acad Agr Sci, Inst Fruit & Tea, Wuhan 430064, Hubei, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Wuhan Acad Agr Sci, Wuhan 430074, Hubei, Peoples R China
关键词: Vitis amurensis; Histone modification; Chilling stress
期刊名称:HORTICULTURAL PLANT JOURNAL ( 影响因子:5.7; 五年影响因子:5.4 )
ISSN: 2095-9885
年卷期: 2023 年 9 卷 3 期
页码:
收录情况: SCI
摘要: Histone H3 lysine 27 trimethylation (H3K27me3) is a histone modification associated with transcriptional repression. However, insights into the genome-wide pattern of H3K27me3 in grapevines are limited. Here, anti-H3K27 chromatin immunoprecipitation (ChIP), high-throughput sequencing, and transcriptome analysis were performed using leaves of Vitis amurensis. The leaves were treated at 4 & DEG;C for 2 h and 24 h and used to investigate changes in H3K27me3 under chilling treatment. The results show that H3K27me3 is well-distributed both in gene regions (-50%) and in the intergenic region (-50%) in the grapevine genome (Vitis vinifera 'Pinot Noir PN40024'). H3K27me3 was found to be localized in 8 368 annotated gene regions in all detected samples (leaves at normal temperature and under chilling treatments) and mainly enriched in gene bodies with the adjacent promoter and downstream areas. The short-term chilling treatments (4 & DEG;C for 2 h) induced 2 793 gains and 305 losses in H3K27me3 modification. Subsequently, 97.3% of the alterations were restored to original levels after 24 h treatment. The ChIP-qPCR for five differential peaks showed similar results to the data for ChIP-seq, indicating that the chilling-induced H3K27me3 modification is reliable. Integrative analysis of transcriptome and ChIP-seq results showed that the expression of H3K27me3 target genes was significantly lower than those of non-target genes, indicating transcriptional repression of H3K27me3 in grapevine leaves. Furthermore, histone methylation alter-ations were detected in 82 genes and were related to either repression or activation of their expression during chilling stress. The findings provide the genome-wide H3K27me3 patterns in grapevines and shed light on uncovering its regulation in chilling stress responses.
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