Maternal control of suspensor programmed cell death via gibberellin signaling
| Autor: | Meng-Xiang Sun, Xiaorong Huang, Yu-Ting Du, Tianhe Cheng, Peng Zhao, Ce Shi, Hong-Ju Li, Wei-Cai Yang, An Luo, Hong Chen, Pan Luo |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Programmed cell death Cell signaling Science Plant embryogenesis Arabidopsis General Physics and Astronomy Apoptosis 02 engineering and technology Cell Communication macromolecular substances Biology General Biochemistry Genetics and Molecular Biology Article 03 medical and health sciences Gene Expression Regulation Plant Tobacco Seed development Promoter Regions Genetic lcsh:Science Plant Proteins Regulation of gene expression Multidisciplinary fungi Gene Expression Regulation Developmental food and beverages Embryo General Chemistry Proembryo 021001 nanoscience & nanotechnology Plants Genetically Modified Embryonic stem cell Gibberellins Cell biology 030104 developmental biology Seeds lcsh:Q CRISPR-Cas Systems 0210 nano-technology Suspensor Cell signalling Signal Transduction Transcription Factors |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-12 (2019) Nature Communications |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-019-11476-3 |
| Popis: | 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. Plant embryos are connected to maternal tissue by a filamentous suspensor, analogous to an umbilical cord, but which is severed during early embryo development. Here, Shi et al. show that gibberellins can trigger suspensor cell death in tobacco via a DELLA protein that regulates expression of cell death factors. |
| Databáze: | OpenAIRE |
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