Dynamics of H3K27me3 Modification on Plant Adaptation to Environmental Cues.

Dynamics of H3K27me3 Modification on Plant Adaptation to Environmental Cues.
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H3K27me3 修饰对植物适应环境线索的动态

DOI:
10.3390/plants10061165
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发表时间:
2021-06-08
期刊:
Plants (Basel, Switzerland)
影响因子:
--
通讯作者:
Wang G
Wang G
中科院分区:
其他
文献类型:
--
作者:
Shen Q;Lin Y;Li Y;Wang G

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鉴于其固着的性质,植物已经进化出复杂的调节网络,以赋予发育可塑性以适应波动的环境。表观遗传密码,如组蛋白 H3 在 Lys27 (H3K27me3) 上的三甲基化,已被证明可以解释这种进化益处。 Polycomb 抑制复合物 2 (PRC2) 和 PRC1 在大多数真核细胞中实施并维持 H3K27me3 介导的基因抑制。植物利用这种表观遗传机制在发育和环境适应过程中重新编程基因表达。最近的研究发现了许多参与植物中 H3K27me3 标记的建立、消除和调节的新参与者,特别强调了植物对环境线索的反应中的新作用。在这里,我们回顾了目前关于植物生长和发育过程中发生的 PRC2-H3K27me3 动力学的知识,包括其写入器、擦除器和读取器以及靶向机制,并总结了 H3K27me3 标记在植物适应环境胁迫中的新作用。
Given their sessile nature, plants have evolved sophisticated regulatory networks to confer developmental plasticity for adaptation to fluctuating environments. Epigenetic codes, like tri-methylation of histone H3 on Lys27 (H3K27me3), are evidenced to account for this evolutionary benefit. Polycomb repressive complex 2 (PRC2) and PRC1 implement and maintain the H3K27me3-mediated gene repression in most eukaryotic cells. Plants take advantage of this epigenetic machinery to reprogram gene expression in development and environmental adaption. Recent studies have uncovered a number of new players involved in the establishment, erasure, and regulation of H3K27me3 mark in plants, particularly highlighting new roles in plants’ responses to environmental cues. Here, we review current knowledge on PRC2-H3K27me3 dynamics occurring during plant growth and development, including its writers, erasers, and readers, as well as targeting mechanisms, and summarize the emerging roles of H3K27me3 mark in plant adaptation to environmental stresses.
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