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ARID1 is required to regulate and reinforce H3K9me2 in sperm cells in Arabidopsis

Author

Listed:
  • Lei Li

    (Fudan University)

  • Huaihao Yang

    (Fudan University)

  • Yi Zhao

    (Fudan University)

  • Qianqian Hu

    (Fudan University)

  • Xiaotuo Zhang

    (Fudan University)

  • Ting Jiang

    (Fudan University)

  • Hua Jiang

    (The Leibniz Institute for Plant Genetics and Crop Plant Research)

  • Binglian Zheng

    (Fudan University)

Abstract

Heterochromatin de-condensation in companion gametic cells is conserved in both plants and animals. In plants, microspore undergoes asymmetric pollen mitosis (PMI) to produce a vegetative cell (VC) and a generative cell (GC). Subsequently, the GC undergoes pollen mitosis (PMII) to produce two sperm cells (SC). Consistent with heterochromatin de-condensation in the VC, H3K9me2, a heterochromatin mark, is barely detected in VC. However, how H3K9me2 is differentially regulated during pollen mitosis remains unclear. Here, we show that H3K9me2 is gradually evicted from the VC since PMI but remain unchanged in the GC and SC. ARID1, a pollen-specific transcription factor that facilitates PMII, promotes H3K9me2 maintenance in the GC/SC but slows down its eviction in the VC. The genomic targets of ARID1 mostly overlaps with H3K9me2 loci, and ARID1 recruits H3K9 methyltransferase SUVH6. Our results uncover that differential pattern of H3K9me2 between two cell types is regulated by ARID1 during pollen mitosis.

Suggested Citation

  • Lei Li & Huaihao Yang & Yi Zhao & Qianqian Hu & Xiaotuo Zhang & Ting Jiang & Hua Jiang & Binglian Zheng, 2024. "ARID1 is required to regulate and reinforce H3K9me2 in sperm cells in Arabidopsis," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51513-4
    DOI: 10.1038/s41467-024-51513-4
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    References listed on IDEAS

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    1. Asuka Higo & Tomokazu Kawashima & Michael Borg & Mingmin Zhao & Irene López-Vidriero & Hidetoshi Sakayama & Sean A. Montgomery & Hiroyuki Sekimoto & Dieter Hackenberg & Masaki Shimamura & Tomoaki Nish, 2018. "Transcription factor DUO1 generated by neo-functionalization is associated with evolution of sperm differentiation in plants," Nature Communications, Nature, vol. 9(1), pages 1-13, December.
    2. Zachary Lippman & Rob Martienssen, 2004. "The role of RNA interference in heterochromatic silencing," Nature, Nature, vol. 431(7006), pages 364-370, September.
    3. Souraya Khouider & Filipe Borges & Chantal LeBlanc & Alexander Ungru & Arp Schnittger & Robert Martienssen & Vincent Colot & Daniel Bouyer, 2021. "Male fertility in Arabidopsis requires active DNA demethylation of genes that control pollen tube function," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
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