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Review

Knowing When to Silence: Roles of Polycomb-Group Proteins in SAM Maintenance, Root Development, and Developmental Phase Transition

Rice Research Institute, Shenyang Agricultural University, Shenyang 110866, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2020, 21(16), 5871; https://doi.org/10.3390/ijms21165871
Received: 23 June 2020 / Revised: 6 August 2020 / Accepted: 6 August 2020 / Published: 15 August 2020
Polycomb repressive complex 1 (PRC1) and PRC2 are the major complexes composed of polycomb-group (PcG) proteins in plants. PRC2 catalyzes trimethylation of lysine 27 on histone 3 to silence target genes. Like Heterochromatin Protein 1/Terminal Flower 2 (LHP1/TFL2) recognizes and binds to H3K27me3 generated by PRC2 activities and enrolls PRC1 complex to further silence the chromatin through depositing monoubiquitylation of lysine 119 on H2A. Mutations in PcG genes display diverse developmental defects during shoot apical meristem (SAM) maintenance and differentiation, seed development and germination, floral transition, and so on so forth. PcG proteins play essential roles in regulating plant development through repressing gene expression. In this review, we are focusing on recent discovery about the regulatory roles of PcG proteins in SAM maintenance, root development, embryo development to seedling phase transition, and vegetative to reproductive phase transition. View Full-Text
Keywords: PRC1; PRC2; PcG proteins; plant development; Arabidopsis; rice PRC1; PRC2; PcG proteins; plant development; Arabidopsis; rice
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MDPI and ACS Style

Yan, B.; Lv, Y.; Zhao, C.; Wang, X. Knowing When to Silence: Roles of Polycomb-Group Proteins in SAM Maintenance, Root Development, and Developmental Phase Transition. Int. J. Mol. Sci. 2020, 21, 5871. https://doi.org/10.3390/ijms21165871

AMA Style

Yan B, Lv Y, Zhao C, Wang X. Knowing When to Silence: Roles of Polycomb-Group Proteins in SAM Maintenance, Root Development, and Developmental Phase Transition. International Journal of Molecular Sciences. 2020; 21(16):5871. https://doi.org/10.3390/ijms21165871

Chicago/Turabian Style

Yan, Bowen, Yanpeng Lv, Chunyu Zhao, and Xiaoxue Wang. 2020. "Knowing When to Silence: Roles of Polycomb-Group Proteins in SAM Maintenance, Root Development, and Developmental Phase Transition" International Journal of Molecular Sciences 21, no. 16: 5871. https://doi.org/10.3390/ijms21165871

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