Dynamic changes in 3D chromatin structure during male gametogenesis in Arabidopsis thaliana

IF 10.1 1区生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Genome Biology Pub Date : 2025-02-10 DOI:10.1186/s13059-025-03496-8

Zhihan Song, Qimin Xia, Minqi Yang, Tingting Yang, Yali Liu, Dingyue Wang, Jiayue Shu, Zhiyuan Liu, Yi Chi, Heming Xu, Dong Xing, Yue Zhou

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引用次数: 0

Abstract

Chromatin higher-order structure plays an important role in genome stability maintenance and gene transcriptional regulation; however, the dynamics of the three-dimensional (3D) chromatin in male gametophytes during the two rounds of mitosis remains elusive. Here, we use the optimized single-nucleus and low-input Hi-C methods to investigate changes in 3D chromatin structure in four types of male gametophyte nucleus at different stages. The reconstructed genome structures show that microspore nuclei develop towards two different directions. Although the 3D chromatin organization in generative nuclei is similar to that in microspore nuclei, vegetative nuclei lose chromosome territories, display dispersed centromeres, and switched A/B compartments, which are associated with vegetative specific gene expression. Additionally, we find that there is an active transcriptional center in sperm nuclei, emphasizing the transcription in Arabidopsis sperm is not completely inhibited despite the chromosomes being condensed. Our data suggest that the special 3D structures of vegetative and sperm nuclei contribute to cell type-specific expression patterns.

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来源期刊

Genome Biology Biochemistry, Genetics and Molecular Biology-Genetics

CiteScore

21.00

自引率

3.30%

发文量

241

审稿时长

2 months

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