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

ABSTRACT:

Background

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.

Results

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

SUBMITTER: Song Z 

PROVIDER: S-EPMC11808980 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature