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Maternal control of suspensor programmed cell death via gibberellin signaling

Author

Listed:
  • Ce Shi

    (Wuhan University)

  • Pan Luo

    (Wuhan University)

  • Yu-Ting Du

    (Wuhan University)

  • Hong Chen

    (Wuhan University)

  • Xiaorong Huang

    (Wuhan University)

  • Tian-He Cheng

    (Wuhan University)

  • An Luo

    (Wuhan University)

  • Hong-Ju Li

    (Chinese Academy of Sciences)

  • Wei-Cai Yang

    (Chinese Academy of Sciences)

  • Peng Zhao

    (Wuhan University)

  • Meng-Xiang Sun

    (Wuhan University)

Abstract

Plant embryos are generated and develop in a stable and well-protected microenvironment surrounded by maternal tissue, which is vital for embryogenesis. However, the signaling mechanisms responsible for maternal tissue-to-proembryo communication are not well understood. Here, we report a pathway for maternal tissue-to-proembryo communication. We identify a DELLA protein, NtCRF1 (NtCYS regulative factor 1), which regulates suspensor programmed cell death (PCD). NtCRF1 can bind to the promoter of NtCYS and regulate the suspensor PCD-switch module NtCYS-NtCP14 in response to gibberellin (GA). We confirm that GA4, as a primary signal triggering suspensor PCD, is generated in the micropylar endothelium by the transient activation of NtGA3oxs in the maternal tissue. Thus, we propose that GA is a maternal-to-proembryo communication signal that is decoded in the proembryo by a GID1-CRF1-CYS-CP14 signaling cascade. Using this mode of communication, maternal tissue precisely controls the embryonic suspensor PCD and is able to nurse the proembryo in a stage-dependent manner.

Suggested Citation

  • Ce Shi & Pan Luo & Yu-Ting Du & Hong Chen & Xiaorong Huang & Tian-He Cheng & An Luo & Hong-Ju Li & Wei-Cai Yang & Peng Zhao & Meng-Xiang Sun, 2019. "Maternal control of suspensor programmed cell death via gibberellin signaling," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11476-3
    DOI: 10.1038/s41467-019-11476-3
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    Cited by:

    1. Lin-lin Zhao & Ru Chen & Ziyu Bai & Junyi Liu & Yuhao Zhang & Yicheng Zhong & Meng-xiang Sun & Peng Zhao, 2024. "Autophagy-mediated degradation of integumentary tapetum is critical for embryo pattern formation," Nature Communications, Nature, vol. 15(1), pages 1-16, December.

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